The web cache, or browser cache, is a mechanism for the temporary storage of web documents intended to reduce bandwidth usage, server load, and the user’s perception of browser latency.
If you visit a web site, for example, with design elements (be they text, pictures, or other multimedia content) A, B, C and X, Y, Z, then your browser will store those elements in the cache. Upon returning to that page (whether in a few minutes or a few days), the browser will compare the content of the server-based web site with the content cached in the browser’s cache. Only the new content will be downloaded to the computer while the old (but still current) content will be pulled from the cache. This not only saves on bandwidth (historically a very important consideration) but also significantly decreases the page’s load time, which makes for a much smoother and pleasant browsing experience.
- By Jason Fitzpatrick on 06/11/13