24-3: Add ListNodes cache in DynamicNameserver (#12694)

[pixcc]

Changelog entry

Add caching for ListNodes request in DynamicNameserver

Changelog category

• Performance improvement

Additional information

Prior to this change, the entire node list was copied for every ListNodes request. This change adds caching of the node list, which is now distributed by pointer. The node list is re-cached when changes are made.

[github-actions]

⚪ 2024-12-18 19:59:32 UTC Pre-commit check for 28d46aa has started.
⚪ 2024-12-18 20:02:40 UTC Build linux-x86_64-release-asan is running...
🟢 2024-12-18 20:44:15 UTC Build successful.
⚪ 2024-12-18 20:44:31 UTC Tests are running...
🔴 2024-12-18 22:54:54 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14348	14223	0	35	47	43

🟢 2024-12-18 22:55:41 UTC ydbd size 5.6 GiB changed* by +88.7 KiB, which is < 100.0 KiB vs stable-24-3: OK

ydbd size dash	stable-24-3: ee4ad94	merge: 28d46aa	diff	diff %
ydbd size	6 002 448 352 Bytes	6 002 539 152 Bytes	+88.7 KiB	+0.002%
ydbd stripped size	1 504 173 504 Bytes	1 504 193 536 Bytes	+19.6 KiB	+0.001%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}

[github-actions]

⚪ 2024-12-18 20:00:20 UTC Pre-commit check for 28d46aa has started.
⚪ 2024-12-18 20:03:15 UTC Build linux-x86_64-relwithdebinfo is running...
🟢 2024-12-18 21:05:24 UTC Build successful.
⚪ 2024-12-18 21:05:39 UTC Tests are running...
🔴 2024-12-18 23:17:36 UTC Some tests failed, follow the links below.

Test history | Test log

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
75533	62047	0	15	13432	39

🟡 2024-12-18 23:18:34 UTC ydbd size 8.3 GiB changed* by +139.6 KiB, which is >= 100.0 KiB vs stable-24-3: Warning

ydbd size dash	stable-24-3: ee4ad94	merge: 28d46aa	diff	diff %
ydbd size	8 873 359 848 Bytes	8 873 502 752 Bytes	+139.6 KiB	+0.002%
ydbd stripped size	484 345 064 Bytes	484 350 248 Bytes	+5.1 KiB	+0.001%

^{*please be aware that the difference is based on comparing your commit and the last completed build from the post-commit, check comparation}