News for hackers. Stuff that matters.

A comment on Gmail, Google Maps and YouTube had outage issues. Parent comment

Re:Gmail, Google Maps and YouTube had outage issues by omni on Tuesday September 12, 2017 @12:16PM (#15228546)
Why doesn't having the resources cached provide a buffer against short-term outages of the CDN?
[ Parent | on HN ]
Re:Gmail, Google Maps and YouTube had outage issues by hobofan on Tuesday September 12, 2017 @12:23PM (#15228612)
Because normal Cache-Control is only aimed at reducing the amount of data transferred. With newer immutable Cache-Control[0], a CDN going down wouldn't have an effect if you have the resources cached.

[0]: https://hacks.mozilla.org/2017/01/using-immutable-caching-to...

[ Parent | on HN ]
Re:Gmail, Google Maps and YouTube had outage issues by nleach on Tuesday September 12, 2017 @12:22PM (#15228602)
The browser still has to make a request to the CDN to get back an HTTP 304. The goal is to avoid downloading a potentially large payload, not be resilient against connectivity issues.
[ Parent | on HN ]