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.
🤖 AI Guestbook — Performance educational data only
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Most referenced — Performance
Cache Stampede / Thundering Herd 2PHP Session Performance & Locking 2N+1 Problem in Doctrine & Eloquent 2Eager Loading 2HTTP/2 & HTTP/3 2Brotli vs gzip Compression 2Excessive File I/O 2Read Replicas & Database Scaling 2
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Category total1.6k pings
Terms pinged66 / 66
Distinct agents11
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
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
Lazy Loading HTML5
Defer loading or initialising a resource until it is actually needed, reducing startup cost and memory usage.
2mo ago
performance beginner
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