Скачать или смотреть Resolving Node.Js and MongoDB Compass connection errors with Ease

Encountering errors while connecting Node.Js to MongoDB Compass? Here’s a step-by-step guide to solve `MongooseServerSelectionError` and ensure smooth connectivity.
---
This video is based on the question https://stackoverflow.com/q/72922075/ asked by the user 'mitas1c' ( https://stackoverflow.com/u/17507202/ ) and on the answer https://stackoverflow.com/a/72928513/ provided by the user 'Filip Studený' ( https://stackoverflow.com/u/15338201/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Node.Js and MongoDB Compass connection error

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Resolving Node.Js and MongoDB Compass connection errors with Ease

Connecting Node.Js applications to MongoDB Compass can sometimes lead to frustrating errors, especially when transitioning from one project setup to another. If you're using Typescript and Mongoose, it's not uncommon to encounter a connection error that leaves you scratching your head. In this guide, we will tackle the MongooseServerSelectionError you're seeing and walk through a clear solution.

The Problem: Connection Error

You shared your code that looks well-written at a glance:

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

However, an error appears when attempting to connect to MongoDB Compass, particularly:

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

What Does This Error Mean?

This error indicates that your application is unable to establish a connection to the MongoDB server. The ECONNREFUSED part signifies that the connection attempt was explicitly refused, often due to configurations concerning IP versions.

The Solution: Configuring your Mongoose Connection

To resolve this error and establish a stable connection to MongoDB, we can tweak a few settings in your connection code. Here’s how to do it step-by-step:

1. Modify Your Connection Code

Add certain options to your mongoose.connect function to ensure it looks for the connection using IPv4 instead of IPv6. Below is the updated code snippet:

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

2. Key Options Explained

useNewUrlParser: This option allows the use of the new URL string parser which can handle your MongoDB connection string correctly.

useUnifiedTopology: This tells Mongoose to use the new Server Discover and Monitoring engine, which manages connection more effectively.

family: Setting this to 4 ensures that Mongoose uses IPv4. This is often necessary if your network settings prefer IPv6 but your MongoDB server listens on IPv4.

3. Testing Your Connection

After making these adjustments, run your server again. If everything is configured correctly, you should see the message:

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

If you still face issues, consider checking:

That MongoDB is running on your machine.

The network configuration, ensuring that MongoDB is accessible from your application.

Conclusion

By simply specifying the connection options in Mongoose, we can tackle the MongooseServerSelectionError effectively. This solution not only resolves your immediate problem but also enhances your understanding of Node.Js, Mongoose, and MongoDB connections.

Feel free to reach out with any further questions or issues, and happy coding!