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.
Time Complexity (Big O)
A notation describing how an algorithm's execution time grows relative to input size — O(1), O(n), O(n log n), O(n²)…
2mo ago
performance intermediate
Batch Processing PHP 5.5+ Processing records in grouped chunks rather than one at a time, reducing per-record overhead and enabling efficient bulk database operations.
2mo ago
performance intermediate
N+1 Query Problem PHP 5.0+ Executing one query to get N records, then N more queries to fetch related data — one per record.
2mo ago
performance intermediate
Rate Limiting PHP 5.0+
Restricting the number of requests a client can make in a given time window to prevent abuse, DoS, and credential stuffing.
CWE-770 OWASP A5:2021
2mo ago
performance intermediate