Post · Sep 17, 2026
The same endpoint, run through four traffic tiers. At 1k req/s almost any design survives. At 10k the database and the single instance give first. At 100k the cache and the load balancer become the systems under test. At 1M the architecture itself has to change, because the failure mode is no longer capacity, it's correlated behavior across clients you don't control.
Snippet · Aug 25, 2026
A reusable fetch factory that infers request/response types from an OpenAPI schema and adds in-memory caching, retry with backoff, and AbortController support, no per-endpoint boilerplate, no `any`.
Cheatsheet · Sep 18, 2026
An endpoint that queries once per parent row instead of once per request looks fine with ten rows and falls over with ten thousand. Batch the per-row lookups into one query and the round trips disappear.
Cheatsheet · Sep 1, 2026
An App Router route is prerendered by default and silently turns dynamic the moment you read something request-specific. Knowing which bucket a route belongs in (and what forces it out) is the difference between an instant page and a server render on every hit.