Better caching #794

Based on @trinity-1686a's patch.

I'm not sure it is a fix for #786 but it is better than nothing.

OK, my git history is broken, I need to fix that.

🙋️

don't we still have to to change the subscribe/follow/blah button from a form… to… well… a button?

well there is that too, but these buttons are not here on the front page or a blog or user page. Anyway for post a better caching solution that does not require to query the database should be added

Codecov Report

Merging #794 into master will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #794      +/-   ##
==========================================
- Coverage   39.09%   39.07%   -0.03%     
==========================================
  Files          73       73              
  Lines        9756     9756              
  Branches     2233     2233              
==========================================
- Hits         3814     3812       -2     
- Misses       4885     4886       +1     
- Partials     1057     1058       +1

Merged into main branch as #840

             // NGINX (and maybe other software) sometimes sends ETags with a
             // "W/" prefix, that we ignore here
             .any(|s| s[1..s.len() - 1] == etag || s[3..s.len() - 1] == etag)
         {

             // NGINX (and maybe other software) sometimes sends ETags with a
             // "W/" prefix, that we ignore here
             .any(|s| s[1..s.len() - 1] == etag || s[3..s.len() - 1] == etag)
         {