Performance terms
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Most referenced — Performance
Caching Strategies 2Redis 2PHP Async Frameworks 2Image Optimisation 2Materialized Views 2Object Pooling 2Database Sharding 2HTTP/3 & QUIC 2
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Category total3.3k pings
Terms pinged66 / 66
Distinct agents17
Cache Stampede / Thundering Herd
PHP 5.0+ When a cached item expires, multiple simultaneous requests all miss the cache and hit the database concurrently, overwhelming it.
3mo ago
Performance advanced
Caching Strategies (APCu, Redis, Memcached)
PHP 5.0+ Storing computed results or fetched data so future requests can be served without repeating expensive operations.
3mo ago
Performance intermediate
CDN (Content Delivery Network)
2
A geographically distributed network of servers that caches and delivers static assets from locations close to end users.
3mo ago
Performance beginner
CDN Edge Caching
PHP 5.0+
1
Content Delivery Networks cache responses at edge nodes close to users — reducing latency and origin load, controlled via Cache-Control headers.
3mo ago
Performance intermediate
Connection Pooling
PHP 5.0+ Reusing a pool of pre-established database connections rather than opening and closing a new connection on every request.
3mo ago
Performance intermediate
Connection Pooling — pgBouncer & ProxySQL
PHP 5.0+
External connection poolers sit between PHP-FPM and your database — multiplexing hundreds of PHP connections onto a small pool of real DB connections.
3mo ago
Performance advanced
Covering Index
An index that contains all columns referenced by a query, allowing the database to answer it entirely from the index without touching the table.
3mo ago
Performance intermediate
Database Connection Pool Sizing
PHP 5.0+ The optimal pool size is smaller than you think — follow the formula (cores × 2) + effective_spindle_count rather than matching thread count.
3mo ago
Performance advanced
Database Indexing
PHP 5.0+
2
Indexes are data structures that allow the database to find rows matching a WHERE clause without scanning the entire table.
3mo ago
Performance intermediate
Database Partitioning
PHP 5.0+ Splitting a large table into physical segments by range, list, or hash — enabling partition pruning, faster archival, and parallel scans.
3mo ago
Performance advanced
Database Sharding
PHP 5.0+ Horizontally partitioning data across multiple database instances by a shard key, scaling write throughput beyond a single server's limits.
3mo ago
Performance advanced
Debouncing & Throttling
ES5 Debounce delays execution until input stops; throttle caps execution to once per interval — both control the frequency of expensive operations.
3mo ago
Performance intermediate
Eager Loading
PHP 5.0+
Loading related data upfront in a single query rather than deferring until access, preventing N+1 query problems.
3mo ago
Performance intermediate
Eager vs Lazy Loading — When to Use Each
PHP 5.0+
Eager loading fetches related data upfront in one query; lazy loading defers it until accessed — the wrong default causes N+1 or over-fetching.
3mo ago
Performance intermediate
Excessive File I/O
PHP 5.0+
Reading the same file multiple times inside a loop or across repeated calls — avoidable with simple in-memory caching.
3mo ago
Performance intermediate
Flame Graphs for PHP Profiling
PHP 5.0+
A visualisation of sampled call stacks showing where CPU time is spent — the fastest way to identify hot paths in a PHP application.
3mo ago
Performance intermediate
Full-Text Search
PHP 5.0+
1
Efficient natural-language search across text fields using inverted indexes — far faster than LIKE '%query%' for large datasets.
3mo ago
Performance intermediate
Gzip / Brotli Compression
Compressing HTTP responses server-side reduces transfer size significantly, especially for text-based assets.
3mo ago
Performance beginner
HTTP Caching (ETags, Cache-Control)
Standard HTTP headers that instruct browsers and intermediary caches on how long to cache responses and when to revalidate.
3mo ago
Performance intermediate
HTTP/2 & HTTP/3
1
Modern HTTP protocol versions that deliver significant performance gains via multiplexing, header compression, and (HTTP/3) UDP transport.
3mo ago
Performance intermediate