Cache
A cache is a high-speed, temporary storage layer designed to store copies of website files (like HTML, images, and scripts) closer to the user. Serving a file from a cache is significantly faster than fetching it from the main Origin Server, as it reduces both Network Time and server load. Speed Kit utilizes a multi-layered caching strategy, including the server-side Backend Cache, a globally distributed Edge Cache, and a client-side Service Worker Cache in the user's browser.
Related web performance terms
- CDN (Content Delivery Network)
A CDN, or Content Delivery Network, is a globally distributed network of servers designed to deliver web content to users quickly and efficiently.
- CORS (Cross-Origin Resource Sharing)
CORS is a browser security feature that uses HTTP headers to manage whether a web page from one domain is allowed to fetch resources from another domain.
- CPU time
CPU time is the amount of time the Central Processing Unit (CPU) of a user's device spends processing the scripts and rendering a webpage.
- Cache Contamination
Cache contamination is a critical issue where a caching system incorrectly stores and serves personalized or user-specific content to the wrong users.