TLDR Tech / Dev
PostgreSQL and the OOM Killer: Why We Use Strict Memory Overcommit
Strict memory overcommit in PostgreSQL is necessary for preventing catastrophic out-of-memory (OOM) kills, as it allows the database to handle memory allocation failures gracefully without impacting all connections. A kernel bug in Ubicloud's product temporarily disrupted this configuration, showing the importance of careful management of memory limits to guarantee system stability while running PostgreSQL in production environments.
Read the full story