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a79fd3bda7
With this refactoring, the Rust code deals with one giant array of requests, and doesn't know that it's sliced up per backend process. The C code is now responsible for slicing it up. This also adds code to complete old IOs at backends start that were started and left behind by a previous session. That was a little more straightforward to do with the refactoring, which is why I tackled it now.
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.