Solving MySQL Connection Issues Between Node.js and Docker

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The Problem: ECONNREFUSED Error

Common reasons for these errors include:

Incorrect port mapping between the host and Docker.

Using the wrong MySQL client library.

Issues with MySQL server version compatibility.

Misconfigurations in network settings for Docker.

Step-by-Step Solution

To tackle this problem effectively, we can take the following steps:

Step 1: Update Docker Compose Configuration

[[See Video to Reveal this Text or Code Snippet]]

Switch from the standard mysql library to mysql2, which supports newer MySQL features and is generally more robust. Install it via npm and adjust your database connection code:

[[See Video to Reveal this Text or Code Snippet]]

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Verify Network Configuration

Step 4: Testing the Connection

Conclusion

Now you're ready to get back to your project and, hopefully, get some well-deserved rest!