In-app SSE stream & notification center
Generated from
pattern-library/registry.json— do not edit by hand; change the registry and runbun run patterns:build.
Index card — the docs below are the canonical explanation; deep-tier pattern pages additionally carry invariants and emulation notes.
Category: Notifications · Tier: light · Maturity: proven (verified 2026-08-20 @ 1a130d67) · Risk: low — same-origin authenticated stream, connection-limited
One SSE route serves notifications in real time over two transports: an in-memory connection map on a persistent host, Redis pub/sub on Vercel serverless; the account pages re-run their load via invalidate() instead of holding a stream open.
When to use: Use when the UI needs near-real-time in-app notification delivery without standing up a third-party pub/sub service.
Docs
Code
src/lib/server/notifications/stream.ts(GitHub · GitLab)src/routes/api/notifications/stream/+server.ts(GitHub · GitLab)
Proof
Machine-readable record: notifications-sse-stream in pattern-library/registry.json.