Most advice about caching stops at "add Redis" or "add Memcached," as if one layer solves every caching problem an application will ever run into. Looking back at our own systems, mature applications usually need two layers that solve two different problems. A fast, short lived, ...
A surprising amount of what gets labelled as PHP performance work is actually configuration work that was simply pushed into the backlog. Without OPcache enabled and properly sized, PHP recompiles every script on every request. This adds a fixed cost to every page load, regardless of how efficient t...
A database that handles ten thousand rows today does not need to be engineered for ten million rows tomorrow. Most performance problems appear gradually and can be addressed when real usage data shows where the bottlenecks are. Enable slow query logging and periodically review the queries generated ...
