🎁 New User? Get 20% off your first purchase with code NEWUSER20 · ⚡ Instant download · 🔒 Secure checkout Register Now →
Menu

Categories

Web Development Intermediate

What is Caching?

Storing copies of frequently accessed data in faster storage to reduce load times and server processing.

Caching stores computed results or fetched data for quick reuse. Types include browser cache (assets), CDN cache (edge content), application cache (computed data in Redis/Memcached), and database cache (query results).

Cache headers (Cache-Control, ETag, Last-Modified) control browser caching. Cache invalidation — knowing when to update cached data — is famously one of the hardest problems in computer science.

Related Terms

Server-Sent Events (SSE)
A web technology enabling servers to push real-time updates to browsers over a single HTTP connection, simpler than WebSockets.
Web Accessibility (a11y)
The practice of designing websites that can be used by people with disabilities, following WCAG guidelines.
HATEOAS
Hypermedia As The Engine Of Application State — a REST constraint where API responses include links to related actions and resources.
OAuth Scope
A mechanism in OAuth that limits an application's access to a user's account to specific resources or actions.
Web Vitals
Google's metrics for measuring user experience quality, including loading speed, interactivity, and visual stability of web pages.
API (Application Programming Interface)
A set of rules and protocols that allows different software applications to communicate and exchange data.
 View All Web Development Terms →