Backend
Aug 2026 5 min read
Where I Put Redis — and, More Usefully, Where I Didn't
Caching is sold as a performance win, paid for in staleness bugs. Which reads are worth caching, how to invalidate honestly & when a cache isn't worth it.
2 articles tagged “Backend”.
Caching is sold as a performance win, paid for in staleness bugs. Which reads are worth caching, how to invalidate honestly & when a cache isn't worth it.
The hardest backend bug isn't a failed request — it's one that succeeds but times out, so the client retries. Idempotency keys and safe-to-repeat writes.