Konstantin Knizhnik 0dc4c9b0b8 Relsize hash lru eviction (#6353) ...

## Problem


Currently relation hash size is limited by "neon.relsize_hash_size" GUC
with default value 64k.
64k relations is not so small number... but it is enough to create 376
databases to exhaust it.

## Summary of changes

Use LRU replacement algorithm to prevent hash overflow

## Checklist before requesting a review

- [ ] I have performed a self-review of my code.
- [ ] If it is a core feature, I have added thorough tests.
- [ ] Do we need to implement analytics? if so did you add the relevant
metrics to the dashboard?
- [ ] If this PR requires public announcement, mark it with
/release-notes label and add several sentences in this section.

## Checklist before merging

- [ ] Do not forget to reformat commit message to not include the above
checklist

---------

Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>

2024-01-17 20:34:30 +02:00

..

hnsw

Forbid installation of hnsw extension (#5346)

2023-09-23 16:47:57 +01:00

neon

Relsize hash lru eviction (#6353)

2024-01-17 20:34:30 +02:00

neon_rmgr

Feat/postgres 16 (#4761)

2023-09-12 15:11:32 +02:00

neon_test_utils

Feat/postgres 16 (#4761)

2023-09-12 15:11:32 +02:00

neon_utils

Be able to get number of CPUs (#3774)

2023-03-10 19:00:20 +02:00

neon_walredo

Prevent SIGSEGV in apply_error_callback when record was not decoded (#5703)

2023-10-30 12:06:08 +02:00

typedefs.list

Refotmat pgxn code, add typedefs.list that was used

2022-09-14 08:14:05 +03:00