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.
Resource Hints (preconnect, prefetch, preload)
HTML link attributes that instruct the browser to take early action on resources — opening connections, fetching future pages, or loading critical assets before they are discovered in HTML parsing.
1mo ago
performance intermediate
Redis PHP 7.0+
An in-memory key-value data store used in PHP applications for caching, session storage, queues, rate limiting, and pub/sub — providing sub-millisecond data access compared to database queries.
2mo ago
performance beginner
Resource Prefetching HTML5
dns-prefetch, preconnect, preload, and prefetch hints — fetching critical resources early to reduce perceived load time.
2mo ago
performance intermediate
RoadRunner — Persistent PHP Worker PHP 8.0+
Go-based server keeping PHP workers alive between requests — eliminating per-request bootstrap cost.
2mo ago
performance advanced
Read Replicas & Database Scaling PHP 5.0+
Directing read queries to replica servers while writes go to the primary — a simple way to scale read throughput horizontally without sharding.
2mo ago
performance intermediate
Redis Patterns (Pub/Sub, Sorted Sets, Lua) PHP 5.0+
Beyond key-value caching, Redis enables queues, leaderboards, rate limiting, pub/sub messaging, and distributed locks via its rich data structures.
2mo ago
performance intermediate
Regex in Loop PHP 5.0+
Compiling and executing the same regular expression on every iteration of a loop — hoist the pattern outside.
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