technotes · topic

Redis

First-principles depth — the single-threaded model, data structures, caching, persistence & scaling.

Glossary

Lessons

1. 0001 The single-threaded event loop

   One thread, one queue — atomicity for free, and big-O as shared latency.

   done
2. 0002 Data structures by command complexity

   Choosing string / hash / list / set / zset on cost, not habit.

   done
3. 0003 Key expiration: TTL vs eviction

   Lazy + active expiry, and why a TTL is not the same as memory-pressure eviction.

   planned

Reference