An expensive cached value expires under load and every concurrent request misses simultaneously, so forty workers run the same four-second query at once. What the losers do is…
A service injected into a controller is constructed on every request that hits it, including the requests that never call it — and for an expensive constructor that…
A client that times out and retries has sent the same request twice, and the server cannot tell whether the first one succeeded. Storing the response rather than…
OCSP stapling saves the client a round trip to the certificate authority, and the configuration is completely inert without one extra line that nothing warns about. nginx needs…
10.5 in June replaced XtraDB with upstream InnoDB, which is a change to the storage engine that most upgrade notes describe as an implementation detail. Removed variables in…
Setting a thirty-second timeout feels responsible and does nothing about the number of workers waiting simultaneously, which is what actually takes a site down. Dropping the timeout from…
One attribute replaces an IntersectionObserver and a library — and applying it to everything makes the Largest Contentful Paint worse rather than better.
6.0 introduced a new protocol with typed replies, and the client opts in with HELLO 3 — so the server supporting it changes nothing until the library does.…
One password, six services, and FLUSHALL available to all of them. 6.0 landed in April with users — and the keyspace pattern is where the isolation actually is.