Whenever I'm deploying updates on our Magento 2 live environment, I run into the issue that on first page load, the .min.css files and sometimes the .js/.min.js files aren't loading (the browser runs into a 404 when trying to load the files from the server).

However, this only seems to be the case on first load after the deploy. When I then refresh the page, it suddenly finds the requested files (sometimes immediately on first retry, sometimes it takes a few attempts).

Does anyone have an idea why and how to fix this? I've tried to think of potential causes, but I'm already running cache:clean and cache:flush and the static signature should be a different one after the deploy.

To summarize some information that may be helpful:

  • The servers are running in production mode, I am developing on a dedicated development server and pushing updates with git.
  • The command used is setup:static-content:deploy -f
  • Our company is using two servers and a load balancer to host the site
  • Each server is being deployed individually
  • The static files are signed (using a part of the git commit hash so both servers have the same signature)
  • It affects both frontend and admin panel


Here's the cache configuration in case this is relevant. Each server runs the static files in its own respective folder; this was changed from a shared static folder recently.

'cache' => [
    'frontend' => [
        'default' => [
            'id_prefix' => 'b1c_',
            'backend' => 'Magento\\Framework\\Cache\\Backend\\Redis',
            'backend_options' => [
                'server' => '<SERVER>',
                'database' => '1',
                'port' => '<PORT>',
                'compress_data' => '1',
                'compression_lib' => ''
        'page_cache' => [
            'id_prefix' => 'b1c_'
    'allow_parallel_generation' => false,
    'graphql' => [
        'id_salt' => '<SALT>'
'cache_types' => [
    'config' => 1,
    'layout' => 1,
    'block_html' => 1,
    'collections' => 1,
    'reflection' => 1,
    'db_ddl' => 1,
    'compiled_config' => 1,
    'eav' => 1,
    'customer_notification' => 1,
    'config_integration' => 1,
    'config_integration_api' => 1,
    'full_page' => 0,
    'config_webservice' => 1,
    'translate' => 1,
    'vertex' => 1,
    'amasty_shopby' => 1,
    'ktype' => 1
  • varnish cache may be ? Sometimes we have to restart php on the server post deploy to make all the statics alive because if not they keep tagging the old release version
    – Claims
    Mar 7 at 9:15
  • @Claims we're not using varnish (yet), but redis - and full page cache is disabled in general. We recently switched from a shared static contents folder to two individual ones for the servers, not sure if something in redis would have to be reconfigured for that?
    – Pascal F
    Mar 7 at 9:45

1 Answer 1


Some production servers use cloudflare for loading Js and Css files. after setup:upgrade command you need to refresh your cloudflare cache to save new created css and js files in cloudflare.

  • We're using AWS as hosting provider, without cloudflare as far as I am aware
    – Pascal F
    Mar 11 at 9:56

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.