[GH-ISSUE #119] Generate Last-Modified and ETag headers #95

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opened 2026-02-25 23:40:40 +03:00 by kerem · 1 comment

kerem commented

2026-02-25 23:40:40 +03:00

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Originally created by @Nutomic on GitHub (Jun 2, 2020).
Original GitHub issue: https://github.com/HaschekSolutions/pictshare/issues/119

According to the docs of Pagespeed Insights, these headers are vital for browser caching of resources.

Both of these headers should be pretty easy to generate based on the filesystem. For last-modified, you just need to read the modification time from the filesystem. And for the etag, use something like an sha1sum of the file.

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Last-Modified
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Etag

Originally created by @Nutomic on GitHub (Jun 2, 2020). Original GitHub issue: https://github.com/HaschekSolutions/pictshare/issues/119 According to the [docs of Pagespeed Insights](https://developers.google.com/speed/docs/insights/LeverageBrowserCaching#recommendations), these headers are vital for browser caching of resources. Both of these headers should be pretty easy to generate based on the filesystem. For last-modified, you just need to read the modification time from the filesystem. And for the etag, use something like an sha1sum of the file. https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Last-Modified https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Etag