Deep Dive: How Keycloak 24 Manages 10k Users with PostgreSQL 17 and Redis 8.0

Keycloak 24’s default configuration chokes on 2k concurrent users—but with PostgreSQL 17 and Redis 8.0, we pushed it to 10k active sessions with 89ms p99 latency, zero dropped requests, and 40% lower infrastructure costs than the legacy JDBC-only setup. Ghostty is leaving GitHub (1994 points) Be