Software comparisons, alternatives, and tool decision notes.

Fix Nginx 502 Bad Gateway in Docker Alpine

You have an Nginx container running on Alpine Linux, and it returns a 502 Bad Gateway. This usual...

Fix VS Code Source Control Not Detecting File Modifications

You edit a file, save it, but the Source Control panel in VS Code shows nothing. No pending chang...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Activate Python Virtual Environment in VS Code

You've created a Python virtual environment but can't get VS Code to use it. The terminal...

How to Fix Cloudflare 521 Error Due to Proxy Issues

If you see a Cloudflare 521 error, the message usually says something like “Web server is down.” ...

Fix Nginx Permission Denied for Static Files

Common Causes

When Nginx returns a 403 Forbidden or 'permission denied' error for...