neon/pgxn/neon

neon extension consists of several parts:

shared preload library neon.so

• implements storage manager API and network communications with remote page server.

• walproposer: implements broadcast protocol between postgres and WAL safekeepers.

• control plane connector: Captures updates to roles/databases using ProcessUtility_hook and sends them to the control ProcessUtility_hook.

• remote extension server: Request compute_ctl to download extension files.

• file_cache: Local file cache is used to temporary store relations pages in local file system for better performance.

• 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.