memory

4 tutorials

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PHP Advanced

PHP Has WeakMap Too - and It Fixes Per-Object Caching

Caching computed data per object with static arrays pins those objects in memory forever - a leak with a cache's haircut. PHP 8's WeakMap caches without owning.

Feb 20, 2026 2 min 435

JavaScript Advanced

WeakMap: Attach Data to DOM Elements Without Leaking Memory

Store state against DOM nodes, cache per-object computations, keep private data - WeakMap does all three and lets the garbage collector clean up behind you.

Jan 28, 2025 2 min 1,063

PHP Intermediate

Processing a 2 GB CSV in PHP Without Running Out of Memory

file() and fetchAll() load everything into RAM and die on big datasets. Generators stream one row at a time with constant memory - and the code barely changes.

Aug 31, 2024 2 min 3,390

JavaScript Intermediate

One AbortController Can Tear Down All Your Event Listeners

AbortController is not just for fetch(). Pass its signal to addEventListener and you can remove dozens of listeners with a single abort() call - no more keeping references to bound functions.

Jan 13, 2024 2 min 965

Carlo Fontanos

PHP Has WeakMap Too - and It Fixes Per-Object Caching

WeakMap: Attach Data to DOM Elements Without Leaking Memory

Processing a 2 GB CSV in PHP Without Running Out of Memory

One AbortController Can Tear Down All Your Event Listeners