Advanced terms
WebAssembly (Wasm)
A binary instruction format that runs at near-native speed in the browser and on servers — enabling C, Rust, and Go code to run alongside JavaScript without plugins.
2mo ago
frontend advanced
Write-Ahead Log (WAL)
4
A durability technique where changes are written to an append-only log before being applied to the database — if the system crashes, the log is replayed to restore the database to a consistent state.
3mo ago
database advanced
WeakRef & FinalizationRegistry
ES2021
WeakRef holds a weak reference allowing GC to collect the object — used for memory-safe caches. FinalizationRegistry runs a callback when an object is collected.
3mo ago
javascript advanced
Web Components
ES2018
Browser-native custom elements, shadow DOM, and HTML templates — framework-agnostic reusable components that work in React, Vue, plain HTML, and anywhere.
3mo ago
javascript advanced
Web Crypto API
ES2015
Browser-native cryptographic operations — crypto.subtle provides AES-GCM encryption, ECDSA signing, PBKDF2 key derivation, and SHA digests without external libraries.
3mo ago
javascript advanced
Web Push Notifications
PHP 7.0+
1
Sending notifications to users even when the browser is closed — using the Push API, Service Worker, and Web Push Protocol with VAPID authentication.
3mo ago
mobile advanced
Worker Pool Patterns
PHP 5.0+
Fixed pool of pre-spawned workers for parallel tasks — avoiding per-task process spawn overhead.
3mo ago
performance advanced
Weak References (WeakReference, WeakMap)
PHP 7.4+
References to objects that don't prevent garbage collection — useful for caches and observer registries that shouldn't extend object lifetimes.
3mo ago
php advanced
WeakMap (PHP 8.0)
PHP 8.0+
A map keyed by objects that doesn't prevent garbage collection — ideal for caching per-object computed data without creating memory leaks.
3mo ago
php advanced
Web Cache Deception
Tricking a cache into storing sensitive authenticated responses by appending a static-file-like suffix to a private URL.
CWE-524 OWASP A5:2021
3mo ago
security advanced
7.5
Web Components
ES2018
2
A suite of native browser APIs (Custom Elements, Shadow DOM, HTML Templates) for creating reusable, encapsulated HTML elements without frameworks.
3mo ago
frontend advanced
Web Workers
ES2015
Background threads in the browser that run JavaScript without blocking the main thread — essential for CPU-intensive tasks that would otherwise freeze the UI.
3mo ago
javascript advanced