Understanding the Vary header in the browser

Understanding the Vary header in the browserThe following is adapted from a post Andrew wrote for Smashing Magazine. I’ve previously written about Vary in relation to CDNs: the intermediary caches (like Fastly’s) that you can put between your servers and the user. Browsers also need to understand and respond to Vary rules, and the way they do this is different from the way Vary is treated by CDNs.

[yosuke_furukawa]

#insideFE #insideFE_A