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  1. Moodle
  2. MDL-77797

Make latex files cached public immutable so can be served by a CDN

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    • MOODLE_402_STABLE
    • MOODLE_403_STABLE
    • MDL-77797-latex-headers
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      1. Turn on the Tex notation filter
      2. Turn off Mathjax
      3. Edit any WYSIWYG text like the assignment description and put in some latex like $$ \sqrt{x + y} $$
      4. Save changes
      5. Open developer tools in your browser and go to Network tab
      6. Reload the page and confirm that you see a pix.php file in Network tab  eg
        https://master.localhost/filter/tex/pix.php/48d46c3c756bf6abb5bfeb1fbdd08740.gif
      7. Click on that file in Network tab
      8. Confirm that it has long term caching headers:
        Cache-Control: public, max-age=31536000, no-transform, immutable
      Show
      Turn on the Tex notation filter Turn off Mathjax Edit any WYSIWYG text like the assignment description and put in some latex like $$ \sqrt{x + y} $$ Save changes Open developer tools in your browser and go to Network tab Reload the page and confirm that you see a pix.php file in Network tab  eg https://master.localhost/filter/tex/pix.php/48d46c3c756bf6abb5bfeb1fbdd08740.gif Click on that file in Network tab Confirm that it has long term caching headers: Cache-Control: public, max-age=31536000, no-transform, immutable

      Each pix.php file is referenced by a hash of the content that generated it so this should be immutable and so marked as such so it can be cached and served by a cdn / varnish

        1. (I) Passed -- (Master)MDL-77797.png
          (I) Passed -- (Master)MDL-77797.png
          248 kB
        2. Screenshot from 2023-05-16 15-19-32.png
          Screenshot from 2023-05-16 15-19-32.png
          222 kB

            brendanheywood Brendan Heywood
            brendanheywood Brendan Heywood
            Misha Golenkov Misha Golenkov
            Ilya Tregubov Ilya Tregubov
            Kim Jared Lucas Kim Jared Lucas
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