OPcache has shipped with PHP since 5.5 and is disabled in several distribution builds, which means a good number of production servers are compiling every file on every…
A deploy finishes, the files on disk are correct, and the site serves the previous release for another minute. OPcache is not checking whether a file changed on…
Two applications share a client library, so it should be a package. Packagist is public, running Satis is a server nobody has volunteered to own, and copying the…
Three installs, three plugin sets, one person patching them — a security release forgotten on the third site for six weeks. The import order, and what a shared…
ALTER TABLE on 30 million rows blocks writes for 40 minutes, and checkout writes to that table. A shadow table, triggers, and a backfill paced by replication lag.