Why is Nginx Serving Cached CSS Files Even After Server Restart?

Resolving the Cache Clearing Issue with Nginx

You're experiencing an issue where Nginx continues to serve cached CSS files even after modifications, despite restarting the server. While some suggest deleting the cache directory (var/cache/nginx), it appears to be absent on your system.

To address this problem, consider the following steps:

Check the Nginx Configuration

Examine your Nginx configuration file (nginx.conf) for the "sendfile" setting. If it's enabled, disable it. Sendfile is used to transfer data between file descriptors and can cause issues in virtual machine environments like Virtualbox.

Verify Caching Settings

Ensure that caching is disabled for Nginx. If caching is enabled, clear the cache to purge any stale copies of files.

Other Potential Causes

• Browser Cache: Check if CSS changes are visible in a different browser or by forcing a cache refresh.
• CDN: If you're using a content delivery network (CDN), the old CSS files may be cached at the CDN's edge servers. Contact the CDN provider to clear the cache.
• File Permissions: Ensure that the modified CSS files have the correct permissions (e.g., read and execute for the Nginx user).

These steps should help you identify and resolve the issue with Nginx's caching. If you continue to experience problems, consult the Nginx documentation or seek further support from the Nginx community.

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