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## Problem See https://neondb.slack.com/archives/C03QLRH7PPD/p1743746717119179 We wallow FSM/VM pages when they are written to disk to persist them in PS. But it is not happen during shutdown checkpoint, because writing to WAL during checkpoint cause Postgres panic. ## Summary of changes Move `CheckPointBuffers` call to `PreCheckPointGuts` Postgres PRs: https://github.com/neondatabase/postgres/pull/615 https://github.com/neondatabase/postgres/pull/614 https://github.com/neondatabase/postgres/pull/613 https://github.com/neondatabase/postgres/pull/612 --------- Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>
neon extension consists of several parts:
shared preload library neon.so
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implements storage manager API and network communications with remote page server.
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walproposer: implements broadcast protocol between postgres and WAL safekeepers.
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control plane connector: Captures updates to roles/databases using ProcessUtility_hook and sends them to the control ProcessUtility_hook.
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remote extension server: Request compute_ctl to download extension files.
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file_cache: Local file cache is used to temporary store relations pages in local file system for better performance.
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relsize_cache: Relation size cache for better neon performance.
SQL functions in neon--*.sql
Utility functions to expose neon specific information to user and metrics collection. This extension is created in all databases in the cluster by default.