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Sorry if this is a dumb question, but I'm just curious as to how the browser caches things like javascript, sylesheets, etc. In a lot of cases I see redirects when fetching these things, so how does the browser know that a particular thing is stale?

Thanks

user1354934
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    Take a look here: [How long does Google Chrome cache a resource if expires and/or no-cache headers are not set?](https://stackoverflow.com/questions/9740822/how-long-does-google-chrome-cache-a-resource-if-expires-and-or-no-cache-headers) – alexP Jul 04 '18 at 05:59
  • https://www.mnot.net/cache_docs/ – Quentin Jul 04 '18 at 06:04

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