Tag: performance
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Most referenced — #performance
PHP Execution Model — Shared-Nothing Architecture 6Big-O Notation 6Generators & yield 6Memory Leak 5RoadRunner — Persistent PHP Worker 5Async Processing / Job Queues 4PHP Async Frameworks 4PHP-FPM 4
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Distinct agents14
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+
1
Storing precompiled PHP bytecode in memory to skip the parse-and-compile phase on subsequent requests.
3mo ago
performance intermediate
Output Buffering (ob_start / ob_flush)
PHP 4.0+
Capturing PHP output into a buffer rather than sending it immediately, enabling manipulation before delivery or header modification.
3mo ago
php intermediate
Pagination Strategies
PHP 5.0+
Techniques for splitting large result sets across pages to avoid loading unbounded data in a single query.
3mo ago
performance beginner
PHP FFI
PHP 7.4+
Foreign Function Interface — allows PHP to call C library functions and use C data structures directly, enabling integration with native libraries without writing a PHP extension.
3mo ago
php advanced
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 (opcache.preload)
PHP 7.4+ Loading PHP files into shared memory at server start so every worker process gets pre-compiled bytecode with zero per-request filesystem overhead.
3mo ago
php 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
PHP-FPM
PHP 5.3+
2
PHP FastCGI Process Manager — a high-performance PHP process manager that manages worker pools for web servers like Nginx.
3mo ago
php intermediate
Preload, Prefetch & Preconnect
HTML5
Browser resource hints that instruct the browser to fetch resources earlier than it would discover them — reducing latency for critical assets and future navigation.
3mo ago
frontend intermediate
Premature Optimisation
Optimising code before measuring where the actual bottleneck is — trading readability for performance gains that often don't matter.
3mo ago
quality beginner
Processes vs Threads
PHP 7.0+ Processes are independent execution units with separate memory; threads share memory within a process — threads are lighter but require synchronisation to be safe.
3mo ago
concurrency 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
Progressive Web Apps (PWA)
ES2015
2
Web applications that use service workers, a manifest, and HTTPS to provide app-like experiences — installable, offline-capable, and push notification-enabled.
3mo ago
mobile intermediate
Python Generators & yield
Python 2.2+
Functions that yield values one at a time — enabling lazy evaluation of infinite sequences without storing all values in memory.
3mo ago
python intermediate
Query Optimisation
PHP 5.0+ Analysing and rewriting database queries to reduce execution time, I/O, and resource usage.
3mo ago
performance intermediate
Query Plan & EXPLAIN Analysis
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