diff --git a/canbench_results.yml b/canbench_results.yml
index c39ecb9d..ea633ec7 100644
--- a/canbench_results.yml
+++ b/canbench_results.yml
@@ -1,1711 +1,1711 @@
 benches:
   btreemap_v2_contains_10mib_values:
     total:
-      instructions: 142205766
+      instructions: 142209880
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob8_u64:
     total:
-      instructions: 277713087
+      instructions: 283243183
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_1024_128:
     total:
-      instructions: 4897884819
+      instructions: 4294894389
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_128_128:
     total:
-      instructions: 925983020
+      instructions: 840909873
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_16_128:
     total:
-      instructions: 304185180
+      instructions: 300105733
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_256_128:
     total:
-      instructions: 1482592583
+      instructions: 1326771398
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_1024:
     total:
-      instructions: 334889492
+      instructions: 337445347
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_128:
     total:
-      instructions: 332336378
+      instructions: 337242954
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_16:
     total:
-      instructions: 336647532
+      instructions: 329500226
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_256:
     total:
-      instructions: 336952134
+      instructions: 335682006
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_32:
     total:
-      instructions: 337767804
+      instructions: 342487364
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_4:
     total:
-      instructions: 333734209
+      instructions: 333741837
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_512:
     total:
-      instructions: 332809414
+      instructions: 333192026
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_64:
     total:
-      instructions: 335145674
+      instructions: 337617770
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_32_8:
     total:
-      instructions: 334699459
+      instructions: 335387692
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_4_128:
     total:
-      instructions: 244876846
+      instructions: 250355527
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_512_128:
     total:
-      instructions: 2624677444
+      instructions: 2298434688
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_64_128:
     total:
-      instructions: 584178824
+      instructions: 419606571
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_blob_8_128:
     total:
-      instructions: 268359561
+      instructions: 273336144
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_u64_blob8:
     total:
-      instructions: 220415166
+      instructions: 225499208
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_u64_u64:
     total:
-      instructions: 221971411
+      instructions: 230729848
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_u64_vec8:
     total:
-      instructions: 220415181
+      instructions: 225499208
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec8_u64:
     total:
-      instructions: 366198881
+      instructions: 373974676
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_1024_128:
     total:
-      instructions: 2875330977
+      instructions: 1847543840
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_128_128:
     total:
-      instructions: 697749792
+      instructions: 562946694
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_16_128:
     total:
-      instructions: 430197715
+      instructions: 432781516
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_256_128:
     total:
-      instructions: 1219777744
+      instructions: 916951502
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_1024:
     total:
-      instructions: 573496205
+      instructions: 516345705
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_128:
     total:
-      instructions: 488301624
+      instructions: 437597036
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_16:
     total:
-      instructions: 408003935
+      instructions: 367092393
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_256:
     total:
-      instructions: 521575504
+      instructions: 445726842
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_32:
     total:
-      instructions: 408501502
+      instructions: 367166160
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_4:
     total:
-      instructions: 406876890
+      instructions: 366267455
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_512:
     total:
-      instructions: 536695503
+      instructions: 480959844
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_64:
     total:
-      instructions: 463298379
+      instructions: 407119034
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_32_8:
     total:
-      instructions: 406799819
+      instructions: 366285310
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_4_128:
     total:
-      instructions: 396852340
+      instructions: 398219520
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_512_128:
     total:
-      instructions: 1811992062
+      instructions: 1276595168
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_64_128:
     total:
-      instructions: 594419422
+      instructions: 512370487
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_contains_vec_8_128:
     total:
-      instructions: 388565162
+      instructions: 398244276
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_10mib_values:
     total:
-      instructions: 388591561
+      instructions: 388595739
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob8_u64:
     total:
-      instructions: 296039913
+      instructions: 294497961
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_1024_128:
     total:
-      instructions: 4995374210
+      instructions: 4434041250
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_128_128:
     total:
-      instructions: 952796495
+      instructions: 874096441
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_16_128:
     total:
-      instructions: 317134417
+      instructions: 313526176
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_256_128:
     total:
-      instructions: 1518161266
+      instructions: 1373148627
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_1024:
     total:
-      instructions: 353696221
+      instructions: 357155878
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_128:
     total:
-      instructions: 345834163
+      instructions: 351535569
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_16:
     total:
-      instructions: 346893462
+      instructions: 340461035
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_256:
     total:
-      instructions: 351520221
+      instructions: 351061574
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_32:
     total:
-      instructions: 348829561
+      instructions: 353942156
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_4:
     total:
-      instructions: 343413664
+      instructions: 343418309
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_512:
     total:
-      instructions: 348869751
+      instructions: 350194694
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_64:
     total:
-      instructions: 347059635
+      instructions: 350423633
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_32_8:
     total:
-      instructions: 345255038
+      instructions: 345686331
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_4_128:
     total:
-      instructions: 256930621
+      instructions: 262413917
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_512_128:
     total:
-      instructions: 2680882132
+      instructions: 2375697184
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_64_128:
     total:
-      instructions: 604824814
+      instructions: 443018383
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_blob_8_128:
     total:
-      instructions: 281380219
+      instructions: 286466147
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_u64_blob8:
     total:
-      instructions: 230440052
+      instructions: 235941204
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_u64_u64:
     total:
-      instructions: 233538450
+      instructions: 242257564
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_u64_vec8:
     total:
-      instructions: 231215276
+      instructions: 236688728
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec8_u64:
     total:
-      instructions: 375465738
+      instructions: 383633028
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_1024_128:
     total:
-      instructions: 2921388781
+      instructions: 1895892018
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_128_128:
     total:
-      instructions: 710260607
+      instructions: 575182488
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_16_128:
     total:
-      instructions: 439839416
+      instructions: 442328777
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_256_128:
     total:
-      instructions: 1232799294
+      instructions: 929706176
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_1024:
     total:
-      instructions: 605868780
+      instructions: 558668775
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_128:
     total:
-      instructions: 498346422
+      instructions: 447698376
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_16:
     total:
-      instructions: 416385722
+      instructions: 374638989
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_256:
     total:
-      instructions: 539258417
+      instructions: 463244746
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_32:
     total:
-      instructions: 416455381
+      instructions: 374845452
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_4:
     total:
-      instructions: 414556101
+      instructions: 374022126
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_512:
     total:
-      instructions: 558220558
+      instructions: 502894637
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_64:
     total:
-      instructions: 471617224
+      instructions: 415510235
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_32_8:
     total:
-      instructions: 414516893
+      instructions: 374044538
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_4_128:
     total:
-      instructions: 406495487
+      instructions: 407171463
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_512_128:
     total:
-      instructions: 1825137226
+      instructions: 1289217052
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_64_128:
     total:
-      instructions: 605631892
+      instructions: 523089680
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_get_vec_8_128:
     total:
-      instructions: 398111188
+      instructions: 407684848
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_insert_10mib_values:
     total:
-      instructions: 5235938163
+      instructions: 5235942268
       heap_increase: 322
       stable_memory_increase: 3613
     scopes: {}
   btreemap_v2_insert_blob8_u64:
     total:
-      instructions: 441904168
+      instructions: 447881281
       heap_increase: 0
       stable_memory_increase: 4
     scopes: {}
   btreemap_v2_insert_blob_1024_128:
     total:
-      instructions: 5105502838
+      instructions: 5522417615
       heap_increase: 0
       stable_memory_increase: 196
     scopes: {}
   btreemap_v2_insert_blob_128_128:
     total:
-      instructions: 1135854893
+      instructions: 1205447826
       heap_increase: 0
       stable_memory_increase: 46
     scopes: {}
   btreemap_v2_insert_blob_16_128:
     total:
-      instructions: 496764107
+      instructions: 497322694
       heap_increase: 0
       stable_memory_increase: 24
     scopes: {}
   btreemap_v2_insert_blob_256_128:
     total:
-      instructions: 1686027747
+      instructions: 1814060369
       heap_increase: 0
       stable_memory_increase: 67
     scopes: {}
   btreemap_v2_insert_blob_32_1024:
     total:
-      instructions: 689280923
+      instructions: 721539147
       heap_increase: 0
       stable_memory_increase: 173
     scopes: {}
   btreemap_v2_insert_blob_32_128:
     total:
-      instructions: 531276303
+      instructions: 560214330
       heap_increase: 0
       stable_memory_increase: 28
     scopes: {}
   btreemap_v2_insert_blob_32_16:
     total:
-      instructions: 510603697
+      instructions: 536081224
       heap_increase: 0
       stable_memory_increase: 11
     scopes: {}
   btreemap_v2_insert_blob_32_256:
     total:
-      instructions: 562470458
+      instructions: 589601127
       heap_increase: 0
       stable_memory_increase: 49
     scopes: {}
   btreemap_v2_insert_blob_32_32:
     total:
-      instructions: 516197300
+      instructions: 546883904
       heap_increase: 0
       stable_memory_increase: 13
     scopes: {}
   btreemap_v2_insert_blob_32_4:
     total:
-      instructions: 498764491
+      instructions: 526741522
       heap_increase: 0
       stable_memory_increase: 8
     scopes: {}
   btreemap_v2_insert_blob_32_512:
     total:
-      instructions: 599721924
+      instructions: 628023289
       heap_increase: 0
       stable_memory_increase: 91
     scopes: {}
   btreemap_v2_insert_blob_32_64:
     total:
-      instructions: 521846397
+      instructions: 553130892
       heap_increase: 0
       stable_memory_increase: 18
     scopes: {}
   btreemap_v2_insert_blob_32_8:
     total:
-      instructions: 505902273
+      instructions: 535393971
       heap_increase: 0
       stable_memory_increase: 9
     scopes: {}
   btreemap_v2_insert_blob_4_128:
     total:
-      instructions: 411923969
+      instructions: 418057064
       heap_increase: 0
       stable_memory_increase: 13
     scopes: {}
   btreemap_v2_insert_blob_512_128:
     total:
-      instructions: 2857199517
+      instructions: 3066989201
       heap_increase: 0
       stable_memory_increase: 111
     scopes: {}
   btreemap_v2_insert_blob_64_128:
     total:
-      instructions: 779936995
+      instructions: 683865403
       heap_increase: 0
       stable_memory_increase: 34
     scopes: {}
   btreemap_v2_insert_blob_8_128:
     total:
-      instructions: 464074295
+      instructions: 469975063
       heap_increase: 0
       stable_memory_increase: 20
     scopes: {}
   btreemap_v2_insert_u64_blob8:
     total:
-      instructions: 409371990
+      instructions: 422220035
       heap_increase: 0
       stable_memory_increase: 5
     scopes: {}
   btreemap_v2_insert_u64_u64:
     total:
-      instructions: 418356354
+      instructions: 430448129
       heap_increase: 0
       stable_memory_increase: 6
     scopes: {}
   btreemap_v2_insert_u64_vec8:
     total:
-      instructions: 416646691
+      instructions: 430971218
       heap_increase: 0
       stable_memory_increase: 21
     scopes: {}
   btreemap_v2_insert_vec8_u64:
     total:
-      instructions: 582567628
+      instructions: 593488226
       heap_increase: 0
       stable_memory_increase: 16
     scopes: {}
   btreemap_v2_insert_vec_1024_128:
     total:
-      instructions: 3320016640
+      instructions: 2788964013
       heap_increase: 0
       stable_memory_increase: 193
     scopes: {}
   btreemap_v2_insert_vec_128_128:
     total:
-      instructions: 1096598029
+      instructions: 1040666127
       heap_increase: 0
       stable_memory_increase: 51
     scopes: {}
   btreemap_v2_insert_vec_16_128:
     total:
-      instructions: 704045105
+      instructions: 716528048
       heap_increase: 0
       stable_memory_increase: 31
     scopes: {}
   btreemap_v2_insert_vec_256_128:
     total:
-      instructions: 1507625753
+      instructions: 1423229579
       heap_increase: 0
       stable_memory_increase: 71
     scopes: {}
   btreemap_v2_insert_vec_32_1024:
     total:
-      instructions: 1222990248
+      instructions: 1241911609
       heap_increase: 0
       stable_memory_increase: 171
     scopes: {}
   btreemap_v2_insert_vec_32_128:
     total:
-      instructions: 762468172
+      instructions: 780562374
       heap_increase: 0
       stable_memory_increase: 33
     scopes: {}
   btreemap_v2_insert_vec_32_16:
     total:
-      instructions: 663941968
+      instructions: 685367835
       heap_increase: 0
       stable_memory_increase: 20
     scopes: {}
   btreemap_v2_insert_vec_32_256:
     total:
-      instructions: 891379346
+      instructions: 905182779
       heap_increase: 0
       stable_memory_increase: 54
     scopes: {}
   btreemap_v2_insert_vec_32_32:
     total:
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-      instructions: 2430698
+      instructions: 2599668
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_count_20_10mib:
     total:
-      instructions: 20572085
+      instructions: 20576282
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_key_sum_1k_0b:
     total:
-      instructions: 16636
+      instructions: 17104
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_key_sum_1k_10kib:
     total:
-      instructions: 57223447
+      instructions: 57215658
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_key_sum_20_10mib:
     total:
-      instructions: 1105825157
+      instructions: 1105826200
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_value_sum_1k_0b:
     total:
-      instructions: 16650
+      instructions: 17118
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_value_sum_1k_10kib:
     total:
-      instructions: 57235443
+      instructions: 57227654
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_range_value_sum_20_10mib:
     total:
-      instructions: 1105825393
+      instructions: 1105826436
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_10mib_values:
     total:
-      instructions: 4722303381
+      instructions: 4722318553
       heap_increase: 0
       stable_memory_increase: 657
     scopes: {}
   btreemap_v2_remove_blob8_u64:
     total:
-      instructions: 589502787
+      instructions: 600630132
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_1024_128:
     total:
-      instructions: 6553234349
+      instructions: 7415359343
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_128_128:
     total:
-      instructions: 1485392969
+      instructions: 1628874474
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_16_128:
     total:
-      instructions: 682777009
+      instructions: 684610503
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_256_128:
     total:
-      instructions: 2229763117
+      instructions: 2462815709
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_1024:
     total:
-      instructions: 969273766
+      instructions: 1011836417
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_128:
     total:
-      instructions: 734489062
+      instructions: 776121815
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_16:
     total:
-      instructions: 690598257
+      instructions: 729483435
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_256:
     total:
-      instructions: 769372662
+      instructions: 812632815
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_32:
     total:
-      instructions: 699409003
+      instructions: 740922807
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_4:
     total:
-      instructions: 682743585
+      instructions: 725865405
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_512:
     total:
-      instructions: 841345948
+      instructions: 885071370
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_64:
     total:
-      instructions: 723470415
+      instructions: 767661424
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_32_8:
     total:
-      instructions: 683374771
+      instructions: 725879178
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_4_128:
     total:
-      instructions: 457076310
+      instructions: 464283644
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_512_128:
     total:
-      instructions: 3665801196
+      instructions: 4116359190
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_64_128:
     total:
-      instructions: 1031492525
+      instructions: 944002054
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_blob_8_128:
     total:
-      instructions: 610204657
+      instructions: 617996656
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_u64_blob8:
     total:
-      instructions: 583411497
+      instructions: 596635327
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_u64_u64:
     total:
-      instructions: 604748819
+      instructions: 618817776
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_u64_vec8:
     total:
-      instructions: 589270684
+      instructions: 602624309
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec8_u64:
     total:
-      instructions: 752324238
+      instructions: 761632935
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_1024_128:
     total:
-      instructions: 5024878622
+      instructions: 4553964491
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_128_128:
     total:
-      instructions: 1454289615
+      instructions: 1456648411
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_16_128:
     total:
-      instructions: 909857926
+      instructions: 923173767
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_256_128:
     total:
-      instructions: 2317194166
+      instructions: 2286348225
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_1024:
     total:
-      instructions: 1676138434
+      instructions: 1725908127
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_128:
     total:
-      instructions: 1012919630
+      instructions: 1062607331
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_16:
     total:
-      instructions: 836775350
+      instructions: 885192472
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_256:
     total:
-      instructions: 1231388606
+      instructions: 1273590765
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_32:
     total:
-      instructions: 843288710
+      instructions: 892627036
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_4:
     total:
-      instructions: 841791715
+      instructions: 891606025
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_512:
     total:
-      instructions: 1395152647
+      instructions: 1438443895
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_64:
     total:
-      instructions: 925864211
+      instructions: 972956178
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_32_8:
     total:
-      instructions: 835455678
+      instructions: 885742038
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_4_128:
     total:
-      instructions: 650876759
+      instructions: 665339043
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_512_128:
     total:
-      instructions: 3268904351
+      instructions: 3123529322
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_64_128:
     total:
-      instructions: 1180916062
+      instructions: 1183067683
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_remove_vec_8_128:
     total:
-      instructions: 821907983
+      instructions: 832533102
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_1k_0b:
     total:
-      instructions: 1462853
+      instructions: 1539245
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_1k_10kib:
     total:
-      instructions: 57039052
+      instructions: 57053247
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_20_10mib:
     total:
-      instructions: 1103718913
+      instructions: 1103719335
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_rev_1k_0b:
     total:
-      instructions: 1464279
+      instructions: 1540240
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_rev_1k_10kib:
     total:
-      instructions: 57015976
+      instructions: 57034266
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_iter_rev_20_10mib:
     total:
-      instructions: 1103718490
+      instructions: 1103718900
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_1k_0b:
     total:
-      instructions: 935633
+      instructions: 1179993
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_1k_10kib:
     total:
-      instructions: 2348959
+      instructions: 2586980
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_20_10mib:
     total:
-      instructions: 18465091
+      instructions: 18469909
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_rev_1k_0b:
     total:
-      instructions: 936583
+      instructions: 1179908
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_rev_1k_10kib:
     total:
-      instructions: 2328902
+      instructions: 2568035
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_keys_rev_20_10mib:
     total:
-      instructions: 18465101
+      instructions: 18469895
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_1k_0b:
     total:
-      instructions: 1457191
+      instructions: 1515583
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_1k_10kib:
     total:
-      instructions: 57033390
+      instructions: 57029585
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_20_10mib:
     total:
-      instructions: 1103718803
+      instructions: 1103718865
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_rev_1k_0b:
     total:
-      instructions: 1459281
+      instructions: 1517242
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_rev_1k_10kib:
     total:
-      instructions: 57010978
+      instructions: 57011268
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
   btreemap_v2_scan_values_rev_20_10mib:
     total:
-      instructions: 1103718392
+      instructions: 1103718442
       heap_increase: 0
       stable_memory_increase: 0
     scopes: {}
diff --git a/src/btreemap.rs b/src/btreemap.rs
index ccc1f62f..b0a86620 100644
--- a/src/btreemap.rs
+++ b/src/btreemap.rs
@@ -505,7 +505,7 @@ where
             let mut root = self.load_node(self.root_addr);
 
             // Check if the key already exists in the root.
-            if let Ok(idx) = root.search(&key) {
+            if let Ok(idx) = root.search(&key, self.memory()) {
                 // The key exists. Overwrite it and return the previous value.
                 let (_, previous_value) = root.swap_entry(idx, (key, value), self.memory());
                 self.save_node(&mut root);
@@ -548,7 +548,7 @@ where
         assert!(!node.is_full());
 
         // Look for the key in the node.
-        match node.search(&key) {
+        match node.search(&key, self.memory()) {
             Ok(idx) => {
                 // The key is already in the node.
                 // Overwrite it and return the previous value.
@@ -581,7 +581,7 @@ where
 
                         if child.is_full() {
                             // Check if the key already exists in the child.
-                            if let Ok(idx) = child.search(&key) {
+                            if let Ok(idx) = child.search(&key, self.memory()) {
                                 // The key exists. Overwrite it and return the previous value.
                                 let (_, previous_value) =
                                     child.swap_entry(idx, (key, value), self.memory());
@@ -594,7 +594,7 @@ where
 
                             // The children have now changed. Search again for
                             // the child where we need to store the entry in.
-                            let idx = node.search(&key).unwrap_or_else(|idx| idx);
+                            let idx = node.search(&key, self.memory()).unwrap_or_else(|idx| idx);
                             child = self.load_node(node.child(idx));
                         }
 
@@ -674,7 +674,7 @@ where
     {
         let node = self.load_node(node_addr);
         // Look for the key in the current node.
-        match node.search(key) {
+        match node.search(key, self.memory()) {
             Ok(idx) => Some(f(node, idx)), // Key found: apply `f`.
             Err(idx) => match node.node_type() {
                 NodeType::Leaf => None, // At a leaf: key not present.
@@ -791,7 +791,7 @@ where
 
         match node.node_type() {
             NodeType::Leaf => {
-                match node.search(key) {
+                match node.search(key, self.memory()) {
                     Ok(idx) => {
                         // Case 1: The node is a leaf node and the key exists in it.
                         // This is the simplest case. The key is removed from the leaf.
@@ -818,7 +818,7 @@ where
                 }
             }
             NodeType::Internal => {
-                match node.search(key) {
+                match node.search(key, self.memory()) {
                     Ok(idx) => {
                         // Case 2: The node is an internal node and the key exists in it.
 
@@ -1622,7 +1622,7 @@ mod test {
             assert!(right_child.is_full());
             let median_index = right_child.entries_len() / 2;
             let median_key = key(12);
-            assert_eq!(right_child.key(median_index), &median_key);
+            assert_eq!(right_child.key(median_index, btree.memory()), &median_key);
 
             // Overwrite the value of the median key.
             assert_eq!(btree.insert(median_key.clone(), value(123)), Some(value(0)));
@@ -3271,7 +3271,7 @@ mod test {
         // [0, 1, 2, 3, 4, 5]     [7, 8, 9, 10, 11]
         let root = btree.load_node(btree.root_addr);
         assert_eq!(root.node_type(), NodeType::Internal);
-        assert_eq!(root.keys(), vec![&[6; 10_000]]);
+        assert_eq!(root.keys(btree.memory()), vec![&[6; 10_000]]);
         assert_eq!(root.children_len(), 2);
 
         // Remove the element in the root.
@@ -3283,7 +3283,7 @@ mod test {
         // [0, 1, 2, 3, 4]     [7, 8, 9, 10, 11]
         let root = btree.load_node(btree.root_addr);
         assert_eq!(root.node_type(), NodeType::Internal);
-        assert_eq!(root.keys(), vec![&[5; 10_000]]);
+        assert_eq!(root.keys(btree.memory()), vec![&[5; 10_000]]);
         assert_eq!(root.children_len(), 2);
 
         // Remove the element in the root. This triggers the case where the root
@@ -3295,7 +3295,7 @@ mod test {
         let root = btree.load_node(btree.root_addr);
         assert_eq!(root.node_type(), NodeType::Leaf);
         assert_eq!(
-            root.keys(),
+            root.keys(btree.memory()),
             vec![
                 &[0; 10_000],
                 &[1; 10_000],
diff --git a/src/btreemap/iter.rs b/src/btreemap/iter.rs
index 82869508..1e653e16 100644
--- a/src/btreemap/iter.rs
+++ b/src/btreemap/iter.rs
@@ -94,7 +94,7 @@ where
             Bound::Included(key) | Bound::Excluded(key) => {
                 let mut node = self.map.load_node(self.map.root_addr);
                 loop {
-                    match node.search(key) {
+                    match node.search(key, self.map.memory()) {
                         Ok(idx) => {
                             if let Bound::Included(_) = self.range.start_bound() {
                                 // We found the key exactly matching the left bound.
@@ -115,7 +115,7 @@ where
                                 };
 
                                 if idx + 1 < node.entries_len()
-                                    && self.range.contains(node.key(idx + 1))
+                                    && self.range.contains(node.key(idx + 1, self.map.memory()))
                                 {
                                     self.forward_cursors.push(Cursor::Node {
                                         node,
@@ -152,7 +152,9 @@ where
                                 NodeType::Leaf => None,
                             };
 
-                            if idx < node.entries_len() && self.range.contains(node.key(idx)) {
+                            if idx < node.entries_len()
+                                && self.range.contains(node.key(idx, self.map.memory()))
+                            {
                                 self.forward_cursors.push(Cursor::Node {
                                     node,
                                     next: Index::Entry(idx),
@@ -188,7 +190,7 @@ where
             Bound::Included(key) | Bound::Excluded(key) => {
                 let mut node = self.map.load_node(self.map.root_addr);
                 loop {
-                    match node.search(key) {
+                    match node.search(key, self.map.memory()) {
                         Ok(idx) => {
                             if let Bound::Included(_) = self.range.end_bound() {
                                 // We found the key exactly matching the right bound.
@@ -208,7 +210,9 @@ where
                                     NodeType::Leaf => None,
                                 };
 
-                                if idx > 0 && self.range.contains(node.key(idx - 1)) {
+                                if idx > 0
+                                    && self.range.contains(node.key(idx - 1, self.map.memory()))
+                                {
                                     self.backward_cursors.push(Cursor::Node {
                                         node,
                                         next: Index::Entry(idx - 1),
@@ -243,7 +247,8 @@ where
                                 NodeType::Leaf => None,
                             };
 
-                            if idx > 0 && self.range.contains(node.key(idx - 1)) {
+                            if idx > 0 && self.range.contains(node.key(idx - 1, self.map.memory()))
+                            {
                                 self.backward_cursors.push(Cursor::Node {
                                     node,
                                     next: Index::Entry(idx - 1),
@@ -320,7 +325,7 @@ where
                 next: Index::Entry(entry_idx),
             } => {
                 // If the key does not belong to the range, iteration stops.
-                if !self.range.contains(node.key(entry_idx)) {
+                if !self.range.contains(node.key(entry_idx, self.map.memory())) {
                     // Clear all cursors to avoid needless work in subsequent calls.
                     self.forward_cursors = vec![];
                     self.backward_cursors = vec![];
@@ -328,7 +333,7 @@ where
                 }
 
                 let res = map(&node, entry_idx);
-                self.range.0 = Bound::Excluded(node.key(entry_idx).clone());
+                self.range.0 = Bound::Excluded(node.key(entry_idx, self.map.memory()).clone());
 
                 let next = match node.node_type() {
                     // If this is an internal node, add the next child to the cursors.
@@ -403,7 +408,7 @@ where
                 next: Index::Entry(entry_idx),
             } => {
                 // If the key does not belong to the range, iteration stops.
-                if !self.range.contains(node.key(entry_idx)) {
+                if !self.range.contains(node.key(entry_idx, self.map.memory())) {
                     // Clear all cursors to avoid needless work in subsequent calls.
                     self.forward_cursors = vec![];
                     self.backward_cursors = vec![];
@@ -411,7 +416,7 @@ where
                 }
 
                 let res = map(&node, entry_idx);
-                self.range.1 = Bound::Excluded(node.key(entry_idx).clone());
+                self.range.1 = Bound::Excluded(node.key(entry_idx, self.map.memory()).clone());
 
                 if let Some(next) = match node.node_type() {
                     // If this is an internal node, add the previous child to the cursors.
@@ -497,7 +502,7 @@ where
 
     fn next(&mut self) -> Option<Self::Item> {
         self.0
-            .next_map(|node, entry_idx| node.key(entry_idx).clone())
+            .next_map(|node, entry_idx| node.key(entry_idx, self.0.map.memory()).clone())
     }
 
     fn count(mut self) -> usize
@@ -516,7 +521,7 @@ where
 {
     fn next_back(&mut self) -> Option<Self::Item> {
         self.0
-            .next_back_map(|node, entry_idx| node.key(entry_idx).clone())
+            .next_back_map(|node, entry_idx| node.key(entry_idx, self.0.map.memory()).clone())
     }
 }
 
diff --git a/src/btreemap/node.rs b/src/btreemap/node.rs
index 270cc46f..d4096918 100644
--- a/src/btreemap/node.rs
+++ b/src/btreemap/node.rs
@@ -39,7 +39,7 @@ pub enum NodeType {
 pub type Entry<K> = (K, Vec<u8>);
 pub type EntryRef<'a, K> = (&'a K, &'a [u8]);
 
-type LazyEntry<K> = (K, LazyValue);
+type LazyEntry<K> = (LazyKey<K>, LazyValue);
 
 /// A node of a B-Tree.
 ///
@@ -113,7 +113,7 @@ impl<K: Storable + Ord + Clone> Node<K> {
                     .last()
                     .expect("A node can never be empty");
                 (
-                    self.get_key(last_entry).clone(),
+                    self.get_key(last_entry, memory).clone(),
                     self.get_value(last_entry, memory).to_vec(),
                 )
             }
@@ -165,21 +165,23 @@ impl<K: Storable + Ord + Clone> Node<K> {
     ) -> Entry<K> {
         let (old_key, old_value) = core::mem::replace(
             &mut self.keys_and_encoded_values[idx],
-            (key, LazyValue::by_value(value)),
+            (LazyKey::by_value(key), LazyValue::by_value(value)),
         );
-        (old_key, self.extract_value(old_value, memory))
+        (
+            self.extract_key(old_key, memory),
+            self.extract_value(old_value, memory),
+        )
     }
 
     /// Returns a reference to the entry at the specified index.
     #[inline(always)]
     pub fn entry<M: Memory>(&self, idx: usize, memory: &M) -> EntryRef<K> {
-        (self.key(idx), self.value(idx, memory))
+        (self.key(idx, memory), self.value(idx, memory))
     }
 
     #[inline(always)]
-    fn get_key<'a>(&'a self, (k, _): &'a LazyEntry<K>) -> &'a K {
-        // TODO: implement lazy loading for keys.
-        k
+    fn get_key<'a, M: Memory>(&'a self, (k, _): &'a LazyEntry<K>, memory: &M) -> &'a K {
+        k.get_or_load(|offset| self.load_key_from_memory(offset, memory))
     }
 
     /// Returns a reference to the cached value and loads it from memory if needed.
@@ -190,8 +192,8 @@ impl<K: Storable + Ord + Clone> Node<K> {
 
     /// Returns a reference to the key at the specified index.
     #[inline(always)]
-    pub fn key(&self, idx: usize) -> &K {
-        self.get_key(&self.keys_and_encoded_values[idx])
+    pub fn key<M: Memory>(&self, idx: usize, memory: &M) -> &K {
+        self.get_key(&self.keys_and_encoded_values[idx], memory)
     }
 
     /// Returns a reference to the encoded value at the specified index.
@@ -200,14 +202,51 @@ impl<K: Storable + Ord + Clone> Node<K> {
         self.get_value(&self.keys_and_encoded_values[idx], memory)
     }
 
-    // TODO: add extract_key() here.
+    /// Extracts the contents of key (by loading it first if it's not loaded yet).
+    fn extract_key<M: Memory>(&self, key: LazyKey<K>, memory: &M) -> K {
+        key.take_or_load(|offset| self.load_key_from_memory(offset, memory))
+    }
 
     /// Extracts the contents of value (by loading it first if it's not loaded yet).
     fn extract_value<M: Memory>(&self, value: LazyValue, memory: &M) -> Vec<u8> {
         value.take_or_load(|offset| self.load_value_from_memory(offset, memory))
     }
 
-    /// Loads a value from stable memory at the given offset of this node.
+    /// Loads a key from stable memory at the given offset.
+    fn load_key_from_memory<M: Memory>(&self, mut offset: Bytes, memory: &M) -> K {
+        let reader = NodeReader {
+            address: self.address,
+            overflows: &self.overflows,
+            page_size: self.page_size(),
+            memory,
+        };
+
+        let size = match self.version {
+            Version::V1(_) => {
+                // V1: key size is always stored in memory.
+                let size = read_u32(&reader, Address::from(offset.get()));
+                offset += U32_SIZE;
+                size
+            }
+            Version::V2(_) => {
+                // V2: use fixed size if available, otherwise read from memory.
+                if K::BOUND.is_fixed_size() {
+                    K::BOUND.max_size()
+                } else {
+                    let size = read_u32(&reader, Address::from(offset.get()));
+                    offset += U32_SIZE;
+                    size
+                }
+            }
+        } as usize;
+
+        let mut bytes = Vec::with_capacity(size);
+        read_to_vec(&reader, Address::from(offset.get()), &mut bytes, size);
+
+        K::from_bytes(Cow::Borrowed(&bytes))
+    }
+
+    /// Loads a value from stable memory at the given offset.
     fn load_value_from_memory<M: Memory>(&self, offset: Bytes, memory: &M) -> Vec<u8> {
         let reader = NodeReader {
             address: self.address,
@@ -216,13 +255,13 @@ impl<K: Storable + Ord + Clone> Node<K> {
             memory,
         };
 
-        let value_size = read_u32(&reader, Address::from(offset.get())) as usize;
-        let mut bytes = vec![];
+        let size = read_u32(&reader, Address::from(offset.get())) as usize;
+        let mut bytes = Vec::with_capacity(size);
         read_to_vec(
             &reader,
             Address::from((offset + U32_SIZE).get()),
             &mut bytes,
-            value_size,
+            size,
         );
 
         bytes
@@ -265,26 +304,32 @@ impl<K: Storable + Ord + Clone> Node<K> {
     /// Inserts a new entry at the specified index.
     pub fn insert_entry(&mut self, idx: usize, (key, value): Entry<K>) {
         self.keys_and_encoded_values
-            .insert(idx, (key, LazyValue::by_value(value)));
+            .insert(idx, (LazyKey::by_value(key), LazyValue::by_value(value)));
     }
 
     /// Returns the entry at the specified index while consuming this node.
     pub fn into_entry<M: Memory>(mut self, idx: usize, memory: &M) -> Entry<K> {
         let keys_and_encoded_values = core::mem::take(&mut self.keys_and_encoded_values);
         let (key, value) = keys_and_encoded_values.into_iter().nth(idx).unwrap();
-        (key, self.extract_value(value, memory))
+        (
+            self.extract_key(key, memory),
+            self.extract_value(value, memory),
+        )
     }
 
     /// Removes the entry at the specified index.
     pub fn remove_entry<M: Memory>(&mut self, idx: usize, memory: &M) -> Entry<K> {
         let (key, value) = self.keys_and_encoded_values.remove(idx);
-        (key, self.extract_value(value, memory))
+        (
+            self.extract_key(key, memory),
+            self.extract_value(value, memory),
+        )
     }
 
     /// Adds a new entry at the back of the node.
     pub fn push_entry(&mut self, (key, value): Entry<K>) {
         self.keys_and_encoded_values
-            .push((key, LazyValue::by_value(value)));
+            .push((LazyKey::by_value(key), LazyValue::by_value(value)));
     }
 
     /// Removes an entry from the back of the node.
@@ -299,7 +344,10 @@ impl<K: Storable + Ord + Clone> Node<K> {
             .pop()
             .expect("node must not be empty");
 
-        Some((key, self.extract_value(value, memory)))
+        Some((
+            self.extract_key(key, memory),
+            self.extract_value(value, memory),
+        ))
     }
 
     /// Merges the entries and children of the `source` node into self, along with the median entry.
@@ -319,19 +367,19 @@ impl<K: Storable + Ord + Clone> Node<K> {
         median: Entry<K>,
         allocator: &mut Allocator<M>,
     ) {
-        // Load all the values from the source node first, as they will be moved out.
+        // Load all the entries from the source node first, as they will be moved out.
         for i in 0..source.entries_len() {
-            source.value(i, allocator.memory());
+            source.entry(i, allocator.memory());
         }
 
-        if source.key(0) > self.key(0) {
+        if source.key(0, allocator.memory()) > self.key(0, allocator.memory()) {
             // The source node has keys that are greater than self.
             // Append the source node into self.
-            Self::append(self, &mut source, median);
+            Self::append(self, &mut source, median, allocator.memory());
         } else {
             // self has keys that are greater than the source node.
             // Append self into the source node (which more efficient).
-            Self::append(&mut source, self, median);
+            Self::append(&mut source, self, median, allocator.memory());
 
             // Move the entries and children into self.
             self.keys_and_encoded_values = core::mem::take(&mut source.keys_and_encoded_values);
@@ -352,14 +400,14 @@ impl<K: Storable + Ord + Clone> Node<K> {
     ///
     /// POSTCONDITION:
     ///   * `b` is empty.
-    fn append(a: &mut Node<K>, b: &mut Node<K>, median: Entry<K>) {
+    fn append<M: Memory>(a: &mut Node<K>, b: &mut Node<K>, median: Entry<K>, memory: &M) {
         // Assert preconditions.
         let a_len = a.entries_len();
         assert_eq!(a.node_type(), b.node_type());
         assert!(b.entries_len() > 0);
         assert!(a_len > 0);
-        assert!(a.key(a_len - 1) < &median.0);
-        assert!(&median.0 < b.key(0));
+        assert!(a.key(a_len - 1, memory) < &median.0);
+        assert!(&median.0 < b.key(0, memory));
 
         a.push_entry(median);
 
@@ -377,14 +425,14 @@ impl<K: Storable + Ord + Clone> Node<K> {
     #[cfg(test)]
     pub fn entries<M: Memory>(&self, memory: &M) -> Vec<Entry<K>> {
         (0..self.keys_and_encoded_values.len())
-            .map(|i| (self.key(i).clone(), self.value(i, memory).to_vec()))
+            .map(|i| (self.key(i, memory).clone(), self.value(i, memory).to_vec()))
             .collect()
     }
 
     #[cfg(test)]
-    pub fn keys(&self) -> Vec<&K> {
+    pub fn keys<M: Memory>(&self, memory: &M) -> Vec<&K> {
         (0..self.keys_and_encoded_values.len())
-            .map(|i| self.key(i))
+            .map(|i| self.key(i, memory))
             .collect()
     }
 
@@ -404,9 +452,9 @@ impl<K: Storable + Ord + Clone> Node<K> {
     /// of the matching key. If the value is not found then `Result::Err` is
     /// returned, containing the index where a matching key could be inserted
     /// while maintaining sorted order.
-    pub fn search(&self, key: &K) -> Result<usize, usize> {
+    pub fn search<M: Memory>(&self, key: &K, memory: &M) -> Result<usize, usize> {
         self.keys_and_encoded_values
-            .binary_search_by_key(&key, |entry| self.get_key(entry))
+            .binary_search_by_key(&key, |entry| self.get_key(entry, memory))
     }
 
     /// Returns the maximum size a node can be if it has bounded keys and values.
@@ -431,9 +479,9 @@ impl<K: Storable + Ord + Clone> Node<K> {
     pub fn split<M: Memory>(&mut self, sibling: &mut Node<K>, memory: &M) -> Entry<K> {
         debug_assert!(self.is_full());
 
-        // Load the values that will be moved out of the node and into the new sibling.
+        // Load the entries that will be moved out of the node and into the new sibling.
         for idx in B..self.entries_len() {
-            self.value(idx, memory);
+            self.entry(idx, memory);
         }
 
         // Move the entries and children above the median into the new sibling.
@@ -539,6 +587,31 @@ impl LazyValue {
     }
 }
 
+#[derive(Debug)]
+struct LazyKey<K>(LazyObject<K>);
+
+impl<K> LazyKey<K> {
+    #[inline(always)]
+    pub fn by_value(value: K) -> Self {
+        Self(LazyObject::by_value(value))
+    }
+
+    #[inline(always)]
+    pub fn by_ref(offset: Bytes) -> Self {
+        Self(LazyObject::by_ref(offset))
+    }
+
+    #[inline(always)]
+    pub fn get_or_load(&self, load: impl FnOnce(Bytes) -> K) -> &K {
+        self.0.get_or_load(load)
+    }
+
+    #[inline(always)]
+    pub fn take_or_load(self, load: impl FnOnce(Bytes) -> K) -> K {
+        self.0.take_or_load(load)
+    }
+}
+
 /// Stores version-specific data.
 #[derive(Debug, PartialEq, Copy, Clone, Eq)]
 pub enum Version {
diff --git a/src/btreemap/node/v1.rs b/src/btreemap/node/v1.rs
index 5e0a64cd..63e13327 100644
--- a/src/btreemap/node/v1.rs
+++ b/src/btreemap/node/v1.rs
@@ -69,20 +69,18 @@ impl<K: Storable + Ord + Clone> Node<K> {
         // Load the entries.
         let mut keys_encoded_values = Vec::with_capacity(header.num_entries as usize);
         let mut offset = NodeHeader::size();
-        let mut buf = vec![];
         for _ in 0..header.num_entries {
-            // Read the key's size.
-            let key_size = read_u32(memory, address + offset);
+            let key_offset = offset;
             offset += U32_SIZE;
-
-            // Read the key.
-            read_to_vec(memory, address + offset, &mut buf, key_size as usize);
+            let key = LazyKey::by_ref(key_offset);
             offset += Bytes::from(max_key_size);
-            let key = K::from_bytes(Cow::Borrowed(&buf));
-            // Values are loaded lazily. Store a reference and skip loading it.
-            keys_encoded_values.push((key, LazyValue::by_ref(offset)));
 
-            offset += U32_SIZE + Bytes::from(max_value_size);
+            let value_offset = offset;
+            offset += U32_SIZE;
+            let value = LazyValue::by_ref(value_offset);
+            offset += Bytes::from(max_value_size);
+
+            keys_encoded_values.push((key, value));
         }
 
         // Load children if this is an internal node.
@@ -136,7 +134,7 @@ impl<K: Storable + Ord + Clone> Node<K> {
         assert!(self
             .keys_and_encoded_values
             .windows(2)
-            .all(|arr| self.get_key(&arr[0]) < self.get_key(&arr[1])));
+            .all(|arr| self.get_key(&arr[0], memory) < self.get_key(&arr[1], memory)));
 
         let (max_key_size, max_value_size) = match self.version {
             Version::V1(DerivedPageSize {
@@ -160,16 +158,16 @@ impl<K: Storable + Ord + Clone> Node<K> {
 
         let mut offset = NodeHeader::size();
 
-        // Load all the values. This is necessary so that we don't overwrite referenced
-        // values when writing the entries to the node.
+        // Load all the entries. This is necessary so that we don't overwrite referenced
+        // entries when writing the entries to the node.
         for i in 0..self.keys_and_encoded_values.len() {
-            self.value(i, memory);
+            self.entry(i, memory);
         }
 
         // Write the entries.
         for i in 0..self.keys_and_encoded_values.len() {
             // Write the size of the key.
-            let key_bytes = self.key(i).to_bytes_checked();
+            let key_bytes = self.key(i, memory).to_bytes_checked();
             write_u32(memory, self.address + offset, key_bytes.len() as u32);
             offset += U32_SIZE;
 
diff --git a/src/btreemap/node/v2.rs b/src/btreemap/node/v2.rs
index 5f792c1f..dab0bba2 100644
--- a/src/btreemap/node/v2.rs
+++ b/src/btreemap/node/v2.rs
@@ -149,26 +149,38 @@ impl<K: Storable + Ord + Clone> Node<K> {
             }
         }
 
-        // Load the keys.
+        // Load the keys (eagerly if small).
+        const EAGER_LOAD_KEY_SIZE_THRESHOLD: u32 = 16;
         let mut keys_encoded_values = Vec::with_capacity(num_entries);
         let mut buf = vec![];
+
         for _ in 0..num_entries {
-            // Load the key's size.
+            let key_offset = Bytes::from(offset.get());
+
+            // Get key size.
             let key_size = if K::BOUND.is_fixed_size() {
-                // Key is fixed in size. The size of the key is always its max size.
                 K::BOUND.max_size()
             } else {
-                // Key is not fixed in size. Read the size from memory.
-                let value = read_u32(&reader, offset);
+                let size = read_u32(&reader, offset);
                 offset += U32_SIZE;
-                value
+                size
+            };
+
+            // Eager-load small keys, defer large ones.
+            let key = if key_size <= EAGER_LOAD_KEY_SIZE_THRESHOLD {
+                read_to_vec(
+                    &reader,
+                    Address::from(offset.get()),
+                    &mut buf,
+                    key_size as usize,
+                );
+                LazyKey::by_value(K::from_bytes(Cow::Borrowed(&buf)))
+            } else {
+                LazyKey::by_ref(key_offset)
             };
 
-            // Load the key.
-            read_to_vec(&reader, offset, &mut buf, key_size as usize);
-            let key = K::from_bytes(Cow::Borrowed(&buf));
             offset += Bytes::from(key_size);
-            keys_encoded_values.push((key, LazyValue::by_ref(Bytes::from(0usize))));
+            keys_encoded_values.push((key, LazyValue::by_ref(Bytes::from(0_u64))));
         }
 
         // Load the values
@@ -240,7 +252,7 @@ impl<K: Storable + Ord + Clone> Node<K> {
 
         // Write the keys.
         for i in 0..self.keys_and_encoded_values.len() {
-            let key = self.key(i);
+            let key = self.key(i, writer.memory());
             let key_bytes = key.to_bytes_checked();
 
             // Write the size of the key if it isn't fixed in size.