A publication about the machinery under everyday software: the contracts between services, the queries behind a page, and the failures that only show up in production.
Caches, retries, delivery and the unglamorous work of staying up.
InfrastructureWhen the defined freshness of a cached web resource runs out, a cache can still serve the stale object to the client while silently revalidating it in the background. RFC 5861, which…
InfrastructureWithout jitter, client retries on rate-limit hit or concurrency overload are synchronized. Each client backs off the same amount, but is rate-limited on the same retry. Not until jitter…
InfrastructureIf your file uploads keep failing with a 413 Request Entity Too Large error, it's time to troubleshoot the limits at each hop between the client and your application. The 413 status means…