Deep Dive into HTTP Caching: cache-control, no-cache, no-store, max-age, ETag and etc.
Caching on the Web Explained with simple examples of how HTTP Caching works, including Proxy Caching and CDNs, and how the Cache-Control header and other headers can be used with their best practices.
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📚 Resources:
How CDNs work: • System Design: Content Delivery Networks (...
HTTP "Vary" header: https://www.smashingmagazine.com/2017...
HTTP "Expires" header: https://developer.mozilla.org/en-US/d...
HTTP "Pragma" header: https://developer.mozilla.org/en-US/d...
Problem with timezones: • The Problem with Time & Timezones - Comput...
🕒 Timestamps:
(00:00) Why HTTP Caching is important?
(02:03) Cache hits and misses
(04:32) HTTP Caching overview
(05:42) What is a CDN?
(07:40) max-age
(09:17) no-store
(10:48) no-cache
(11:34) must-revalidate
(12:21) public, private
(13:11) immutable
(13:40) stale-while-revalidate
(14:26) stale-if-error
(15:51) Heuristic caching
(17:07) If-Modified-Since
(18:27) ETag/If-None-Match
(19:48) Cache busting
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