process-lifecycle

The PostgreSQL backend process lifecycle involves the postmaster spawning backend, auxiliary, and background worker processes. This skill guides the implementation of startup hooks, signal handling, and interrupt processing within this multi-process architecture.

To implement a PostgreSQL background worker correctly, you must adhere to strict memory and signal-safety requirements. This skill provides precise instructions for hooking into startup phases and managing async-signal-safe coding standards.

Async-signal-safe coding standards in PostgreSQL ensure signal handlers only call reentrant functions to prevent race conditions. This skill facilitates compliance by providing authoritative guidance on proper signal handling and interrupt processing.

Adding a custom startup hook to a PostgreSQL backend requires hooking into specific lifecycle phases managed by the postmaster. This skill offers precise instructions to ensure proper initialization and backend lifecycle management.

PostgreSQL background workers crash on signal interrupts when signal handling violates async-signal-safe coding standards or misses interrupt checks. This skill helps debug backend termination and ensures correct interrupt processing compliance.