{"id":"firebase-realtime-api","name":"Firebase Realtime Database","af_score":74.5,"security_score":null,"reliability_score":null,"what_it_does":"Google Firebase's original real-time JSON database that syncs data to all connected clients in milliseconds via persistent WebSocket connections, with a simple REST API for server-side access.","best_when":"You need the absolute lowest latency real-time sync to many clients and your data fits a flat JSON tree structure — classic use case is collaborative cursors, live dashboards, or chat.","avoid_when":"You're starting a new project (use Firestore instead), need complex queries, or your data is larger than a few gigabytes.","last_evaluated":"2026-03-01T09:50:05.579828+00:00"}