Performance terms
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Most referenced — Performance
Async Processing / Job Queues 1Pagination Strategies 1Caching Strategies 1Redis 1PHP Async Frameworks 1Image Optimisation 1Materialized Views 1Object Pooling 1
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Category total3.3k pings
Terms pinged66 / 66
Distinct agents17
Index Selectivity & Cardinality
PHP 5.0+
High-cardinality columns (user IDs, emails) make effective indexes; low-cardinality columns (boolean, status with 3 values) rarely benefit from single-column indexes.
3mo ago
Performance intermediate
Materialized Views
PHP 5.0+
Pre-computed query results stored as a real table — dramatically faster reads for expensive aggregations at the cost of periodic refresh overhead.
3mo ago
Performance advanced
Memoization
Caching the result of a pure function call keyed by its arguments so repeated calls with the same inputs return immediately.
3mo ago
Performance intermediate
Memory Leak
PHP 5.0+
11
Memory allocated during execution that is never released, causing PHP processes to grow until they exhaust available memory or are restarted.
3mo ago
Performance intermediate
N+1 Problem in Doctrine & Eloquent
PHP 7.0+
Accidentally issuing one query per related entity instead of one JOIN — the most common ORM performance pitfall, solved by eager loading.
3mo ago
Performance intermediate
Object Pooling
PHP 7.0+
Reusing a fixed set of pre-initialised expensive objects rather than creating and destroying them on every request — reducing allocation overhead.
3mo ago
Performance advanced
Opcode Caching
PHP 5.5+
3
Storing precompiled PHP bytecode in memory to skip the parse-and-compile phase on subsequent requests.
3mo ago
Performance intermediate
Pagination Strategies
PHP 5.0+
1
Techniques for splitting large result sets across pages to avoid loading unbounded data in a single query.
3mo ago
Performance beginner
PHP JIT — When It Helps (and When It Doesn't)
PHP 8.0+
1
PHP 8.0's JIT compiler converts hot bytecode to native machine code — significant for CPU-bound code, but minimal for typical I/O-bound web requests.
3mo ago
Performance advanced
PHP Preloading — Performance Impact
PHP 7.4+
Quantifying preloading gains: most benefit on large frameworks (5–15%), negligible on tiny apps — how to measure and tune opcache.preload.
3mo ago
Performance advanced
PHP Session Performance & Locking
PHP 5.0+
PHP's file-based sessions acquire an exclusive lock per request — blocking concurrent requests from the same user until the lock is released.
3mo ago
Performance intermediate
Profiling & Benchmarking
PHP 5.0+
1
Measuring where a PHP application spends its time and memory to identify the highest-impact optimisation targets.
3mo ago
Performance intermediate
Query Optimisation
PHP 5.0+
1
Analysing and rewriting database queries to reduce execution time, I/O, and resource usage.
3mo ago
Performance intermediate
Query Plan & EXPLAIN Analysis
1
The execution strategy the database engine chooses for a query — analysed with EXPLAIN to identify full scans, missing indexes, and bottlenecks.
3mo ago
Performance intermediate
Queue Worker Tuning
PHP 7.0+
Configuring PHP queue workers (Laravel Horizon, Supervisor) for throughput, memory limits, graceful restarts, and concurrency — preventing job failures and memory leaks.
3mo ago
Performance intermediate
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.
3mo 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.
3mo ago
Performance intermediate
Regex in Loop
PHP 5.0+
1
Compiling and executing the same regular expression on every iteration of a loop — hoist the pattern outside.
3mo ago
Performance intermediate
Slow Query Log
PHP 5.0+
A database log of queries exceeding a time threshold — the first place to look when diagnosing PHP application performance problems.
3mo ago
Performance beginner
Space Complexity
A measure of how much memory an algorithm uses relative to its input size, expressed in Big O notation.
3mo ago
Performance intermediate