The optimiser chooses a plan from statistics it samples, and a table whose distribution has changed since the last sample gets a plan chosen for the old data.…
Logging every request at info level produces a volume nobody reads and a bill somebody notices, and the useful lines are a small fraction of it. Recording the…
A failover that has never been exercised is a procedure nobody has tested, and the first execution is always during an incident with an audience. Every one of…
A p99 in milliseconds means nothing to somebody who does not think in latency distributions, and Apdex compresses the same data into a number between zero and one.…
A block template defines the starting structure, and the lock setting decides whether an editor can change it — which is a product decision presented as a configuration…
8.0 changed the default collation, and a table created after an upgrade sorts differently from one converted before it — silently, and in a way that only shows…
Factories were closures in a global registry keyed by class name, which nothing could type-check and no IDE could navigate. States as methods is the change that matters:…
Every broker worth using delivers at least once, so a handler will see the same message twice — on a redelivery after a crash, or when an acknowledgement…