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11cf16e3f3
When walproposer observes now higher term it restarts instead of crashing whole compute with PANIC; this avoids compute crash after term_bump call. After successfull election we're still checking last_log_term of the highest given vote to ensure basebackup is good, and PANIC otherwise. It will be used for migration per 035-safekeeper-dynamic-membership-change.md and https://github.com/neondatabase/docs/pull/21 ref https://github.com/neondatabase/neon/issues/8700
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.