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.
Tail Latency (p95, p99)
The latency experienced by the slowest requests — p99 is the response time below which 99% of requests fall, the most user-visible metric.
2mo ago
performance advanced
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