Performance is not a dedicated goal of this library, but here's some numbers:
; memoize is not thread-safe and doesn't have any features
(def f-memoize (memoize identity))
; clojure.core.memoize
(def f-core-memo (ccm/memo identity))
; memento
(def f-memento (m/memo identity {::m/type ::m/caffeine}))
; memento caffeine variable expiry
(def f-memento-var (m/memo identity {::m/type ::m/caffeine ::m/expiry memento.config/meta-expiry}))(cc/bench (f-memoize 1))
Evaluation count : 2911575540 in 60 samples of 48526259 calls.
Execution time mean : 18,520670 ns
Execution time std-deviation : 0,632964 ns
Execution time lower quantile : 18,041806 ns ( 2,5%)
Execution time upper quantile : 20,272312 ns (97,5%)
Overhead used : 1,997090 ns
Found 2 outliers in 60 samples (3,3333 %)
low-severe 2 (3,3333 %)
Variance from outliers : 20,6200 % Variance is moderately inflated by outliers
(cc/bench (let [f-memoize (memoize identity)]
(reduce #(f-memoize %2) (range 1000000))))
Evaluation count : 180 in 60 samples of 3 calls.
Execution time mean : 426,691729 ms
Execution time std-deviation : 31,649211 ms
Execution time lower quantile : 407,433346 ms ( 2,5%)
Execution time upper quantile : 500,285216 ms (97,5%)
Overhead used : 1,997090 ns
Found 9 outliers in 60 samples (15,0000 %)
low-severe 5 (8,3333 %)
low-mild 4 (6,6667 %)
Variance from outliers : 55,1467 % Variance is severely inflated by outliers
(cc/bench (f-core-memo 1))
Evaluation count : 329229720 in 60 samples of 5487162 calls.
Execution time mean : 180,803852 ns
Execution time std-deviation : 3,880666 ns
Execution time lower quantile : 177,830691 ns ( 2,5%)
Execution time upper quantile : 189,061520 ns (97,5%)
Overhead used : 1,997090 ns
Found 6 outliers in 60 samples (10,0000 %)
low-severe 3 (5,0000 %)
low-mild 3 (5,0000 %)
Variance from outliers : 9,4347 % Variance is slightly inflated by outliers
(cc/bench (let [f-core-memo (ccm/memo identity)]
(reduce #(f-core-memo %2) (range 1000000))))
Evaluation count : 120 in 60 samples of 2 calls.
Execution time mean : 778,758053 ms
Execution time std-deviation : 58,068726 ms
Execution time lower quantile : 717,950541 ms ( 2,5%)
Execution time upper quantile : 947,641405 ms (97,5%)
Overhead used : 1,997090 ns
Found 6 outliers in 60 samples (10,0000 %)
low-severe 4 (6,6667 %)
low-mild 2 (3,3333 %)
Variance from outliers : 55,1627 % Variance is severely inflated by outliers
(cc/bench (let [f-core-memo (ccm/lru identity :lru/threshold 100)]
(reduce #(f-core-memo %2) (range 1000000))))
Evaluation count : 60 in 60 samples of 1 calls.
Execution time mean : 1,811235 sec
Execution time std-deviation : 23,960121 ms
Execution time lower quantile : 1,773504 sec ( 2,5%)
Execution time upper quantile : 1,866470 sec (97,5%)
Overhead used : 1,997090 ns
Found 2 outliers in 60 samples (3,3333 %)
low-severe 2 (3,3333 %)
Variance from outliers : 1,6389 % Variance is slightly inflated by outliers
(cc/bench (f-memento 1))
Evaluation count : 854138220 in 60 samples of 14235637 calls.
Execution time mean : 70,745055 ns
Execution time std-deviation : 2,570125 ns
Execution time lower quantile : 68,659819 ns ( 2,5%)
Execution time upper quantile : 74,128774 ns (97,5%)
Overhead used : 1,970580 ns
Found 2 outliers in 60 samples (3,3333 %)
low-severe 1 (1,6667 %)
low-mild 1 (1,6667 %)
Variance from outliers : 22,2591 % Variance is moderately inflated by outliers
(cc/bench (let [f-memento (m/memo identity {::m/type ::m/caffeine})]
(reduce #(f-memento %2) (range 1000000))))
Evaluation count : 120 in 60 samples of 2 calls.
Execution time mean : 474,650866 ms
Execution time std-deviation : 76,082064 ms
Execution time lower quantile : 365,465019 ms ( 2,5%)
Execution time upper quantile : 641,739223 ms (97,5%)
Overhead used : 1,992837 ns
(cc/bench (let [f-memento (m/memo identity {::m/size< 100 ::m/type ::m/caffeine})]
(reduce #(f-memento %2) (range 1000000))))
Evaluation count : 180 in 60 samples of 3 calls.
Execution time mean : 338,339882 ms
Execution time std-deviation : 15,865012 ms
Execution time lower quantile : 321,764748 ms ( 2,5%)
Execution time upper quantile : 370,249429 ms (97,5%)
Overhead used : 1,970580 ns
Found 4 outliers in 60 samples (6,6667 %)
low-severe 3 (5,0000 %)
low-mild 1 (1,6667 %)
Variance from outliers : 33,5491 % Variance is moderately inflated by outliers
(cc/bench (f-memento-var 1))
Evaluation count : 290239740 in 60 samples of 4837329 calls.
Execution time mean : 202,002034 ns
Execution time std-deviation : 5,615344 ns
Execution time lower quantile : 193,672444 ns ( 2,5%)
Execution time upper quantile : 209,577108 ns (97,5%)
Overhead used : 1,990725 ns
Found 1 outliers in 60 samples (1,6667 %)
low-severe 1 (1,6667 %)
Variance from outliers : 14,2418 % Variance is moderately inflated by outliers
(cc/bench (let [f-memento-var (m/memo identity {::m/type ::m/caffeine ::m/expiry memento.config/meta-expiry})]
(reduce #(f-memento-var %2) (range 1000000))))
Evaluation count : 120 in 60 samples of 2 calls.
Execution time mean : 829,952232 ms
Execution time std-deviation : 162,440590 ms
Execution time lower quantile : 660,775895 ms ( 2,5%)
Execution time upper quantile : 1,141234 sec (97,5%)
Overhead used : 1,990725 ns
Found 1 outliers in 60 samples (1,6667 %)
low-severe 1 (1,6667 %)
Variance from outliers : 91,0954 % Variance is severely inflated by outliers
(cc/bench (let [f-memento-var (m/memo identity {::m/size< 100 ::m/type ::m/caffeine ::m/expiry memento.config/meta-expiry})]
(reduce #(f-memento-var %2) (range 1000000))))
Evaluation count : 180 in 60 samples of 3 calls.
Execution time mean : 387,610745 ms
Execution time std-deviation : 15,902067 ms
Execution time lower quantile : 351,348179 ms ( 2,5%)
Execution time upper quantile : 402,749570 ms (97,5%)
Overhead used : 1,990725 ns
Found 11 outliers in 60 samples (18,3333 %)
low-severe 6 (10,0000 %)
low-mild 4 (6,6667 %)
high-mild 1 (1,6667 %)
Variance from outliers : 27,0913 % Variance is moderately inflated by outliers