Administration on Vonnghttps://vonng.com/en/tags/administration/Recent content in Administration on VonngHugo -- gohugo.ioenrh@vonng.com (Ruohang Feng)rh@vonng.com (Ruohang Feng)© 2025 Ruohang FengThu, 19 Feb 2026 00:00:00 +0000Urgent Advisory: Pause PostgreSQL Minor-Release Installs and Upgradeshttps://vonng.com/en/pg/pg-out-of-sync-202602/Thu, 19 Feb 2026 00:00:00 +0000rh@vonng.com (Ruohang Feng)https://vonng.com/en/pg/pg-out-of-sync-202602/The PostgreSQL 18.2 minor-release train introduced regressions in substring() and WAL replay. Hold off on fresh deployments and upgrades, then update promptly after the out-of-cycle releases ship on 2026-02-26.How to Actually Do PostgreSQL High Availabilityhttps://vonng.com/en/pg/pg-ha-sota/Fri, 23 Jan 2026 00:00:00 +0000rh@vonng.com (Ruohang Feng)https://vonng.com/en/pg/pg-ha-sota/A deep dive into the SOTA approach for PostgreSQL HA. RTO/RPO breakdown, from theory to production. If you’re still wrestling with PG HA, this might save you years.