The four horsemen behind Postgres outages

3 days ago

Common PostgreSQL outages are caused by VACUUM and transaction ID wraparound, where deleted rows accumulate and 32-bit IDs lead to database shutdown if not reclaimed.
Connection limits and process-based parallelism create scaling issues, requiring restarts or tools like PgBouncer, while a thread-based model in pgrust offers a safer alternative.
Bad query plans can drastically slow queries, with limited control over the planner, unlike databases that allow hints; pgrust aims to build an adaptive query planner.
JSON in PostgreSQL lacks statistics and compression, leading to inefficient query plans and storage; pgrust plans to add real statistics and compression to address this.

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