SYS/004 · 2025 / Archive

Link shortener

A click checks Redis, falls back to PostgreSQL on a cache miss, and returns 302. Analytics follows on a stream.

BackendGoRedisPostgreSQLEvidence repository

Go — redirect hot path
Redis — 302 lookup
PostgreSQL — source of truth and async analytics

Redis lookup with PostgreSQL fallback
Click stream
Short-link identity

A short-link GET checks Redis and falls back to PostgreSQL on a cache miss before returning 302. Analytics follows on a Redis Stream. The repository also includes a web dashboard.

This system has a short technical note. The full study is Observa.

System index