Tag: performance
Inline Expansion
4
A compiler optimization that replaces a function call with the body of the called function, eliminating call overhead and unlocking further optimizations.
4d ago
compiler advanced
Image Optimisation
Reducing image file size and delivery overhead through format choice (AVIF, WebP), compression, responsive sizing (srcset), lazy loading, and explicit dimensions — the single highest-impact performance lever for most websites.
2mo ago
performance intermediate
IntersectionObserver API
HTML5
IntersectionObserver fires when an element enters or leaves the viewport — the modern way to implement lazy loading, infinite scroll, and scroll-triggered animations.
2mo ago
javascript intermediate
Image Optimisation
PHP 7.0+
Serving images in modern formats (WebP, AVIF), at the correct size, with appropriate compression — typically the single biggest performance win for image-heavy pages.
3mo ago
performance intermediate
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
Intersection Observer API
ES2015
A browser API that efficiently detects when elements enter or leave the viewport — replacing scroll event listeners for lazy loading, infinite scroll, and animation triggers.
3mo ago
frontend intermediate
Iterators & IteratorAggregate
PHP 5.0+
PHP interfaces that allow custom objects to be used in foreach loops, enabling lazy and memory-efficient iteration over any data source.
3mo ago
php intermediate