I Replaced Redis with PostgreSQL (And It's Faster)

I Replaced Redis with PostgreSQL (And It’s Faster) Before the change, Redis handled three things: Caching (70% of usage) Pub/Sub (20% of usage) Background Job Queue (10% of usage) The pain points: Two databases to backup Redis uses RAM (expensive at scale) Redis persistence is… complicated Network hop between Postgres and Redis PostgreSQL Feature 1: Caching with UNLOGGED Tables Redis await redis.set("session:abc123", JSON.stringify(sessionData), "EX", 3600); PostgreSQL CREATE UNLOGGED TABLE cache ( key TEXT PRIMARY KEY, value JSONB NOT NULL, expires_at TIMESTAMPTZ NOT NULL ); CREATE INDEX idx_cache_expires ON cache(expires_at); Insert