Performance terms
Every millisecond matters — here is how to win them back
Slow software costs money, loses users, and erodes trust. Performance engineering covers profiling, caching strategies, database query optimisation, network latency, memory management, and the architectural patterns that keep systems fast under real-world load. Most performance problems are invisible until they are not — these terms help you find and fix them before your users do.
Swoole / OpenSwoole PHP 7.4+
PHP extension with coroutines, async I/O, and built-in HTTP server — handling thousands of concurrent connections in one process.
2mo ago
performance advanced
Slow Query Log PHP 5.0+
A database log of queries exceeding a time threshold — the first place to look when diagnosing PHP application performance problems.
2mo ago
performance beginner
Space Complexity
A measure of how much memory an algorithm uses relative to its input size, expressed in Big O notation.
2mo ago
performance intermediate