Set cache for static files

The cache TTL (time-to-live) for your media and static files is set in the .magento.app.yaml configuration file using the expires key.

1. Specify the TTL time (in seconds) in the web property of the .magento.app.yaml file. You can add the expires key under locations or under "/media" and "/static".

   To prevent the cache from expiring, use the expires: -1 key-value pair. See the following example:

   # The configuration of app when it is exposed to the web.
   web:
     locations:
       "/media":
         ...
         expires: -1
   
       "/static":
         ...
         expires: -1
   

2. Add, commit, and push your code changes.

   git add -A && git commit -m "Set cache TTL for static files" && git push origin <branch-name>