Files always get invalidated on WebGL when must-revalidate is used

Unity Engine
,
1 
 if (url.match(/\.data/) || url.match(/\.bundle/)) {
          console.log("cacheControl returning must-revalidate for url: ", url);
          return "must-revalidate";
        }

When I use “must-revalidate”, or leave the cache control config as default, the “.data” and “.bundle” files always get invalidated and redownloaded again. It only uses the cache when I change it to "immutable:.
The etag and last-modified header have the same values.

The cache control response header from my server for these files is: “public, max-age=1296000, no-cache”
So, is this an issue with my server headers or is it a webgl thing?

Also can you please give me a source to understand how Unity WebGL cache works? for example how “must-revalidate” knows that the file was changed? does it have a lifetime or not?

Here is the game: tuxul.com

1 Like
2

and does unity ask the WebGL cache for the files before making a request? (Which leave it to the browser). because when I set it to immutable, there is no web request at all.

3

HEYY, ANY IDEA?

4

Unity WebGL’s cache function uses IndexedDB.

5

It seems like it’s Unity’s problem since this consistent across all browsers.