Web Caching 101 Part 2: HTTP Headers, Freshness, and Validation (Page Speed 101, ep. 5)
In this episode, we’ll be going over the “how” of web caching - covering topics like caching headers, directives, freshness, and validation.
Here’s everything covered in this video:
0:23 HTTP Headers
1:06 The Expires Header and the Cache-Control Header
2:38 Cache Freshness and Validation
4:31 The Request-Response Model with Caching Layers
Resources:
The 2020 Web Almanac https://almanac.httparchive.org/en/20...
Complete list of cache-control directives https://developer.mozilla.org/en-US/d...