Caching in anger

Write-through to consistent hashing: the failure modes that only show up under load, and why most cache incidents are design decisions coming home.

Read in order: later instalments assume the earlier ones. 8 more instalments in the publish queue.

  1. 01 Scaling a distributed cache: Why consistent hashing is mandatory

    [2026.05.17] • [4 min read]

    Why modulo-based cache sharding fails in production and how consistent hashing with virtual nodes protects your database.
TTFB: -- ms LOAD: -- s PAYLOAD: -- kb