Verify the MongoDB Connection
Before creating models, verify that the backend can connect to MongoDB.
You can temporarily create a small test script or integrate the connection function into your server startup.
When the connection succeeds, you should see a message similar to:
MongoDB connected: rest_api_db
If the connection fails, check:
- Whether the MongoDB deployment is running.
- Whether the connection string is correct.
- Whether the database username is correct.
- Whether the password is correctly encoded.
- Whether your IP address is allowed.
- Whether your network permits outbound database connections.
Do not proceed with database-dependent endpoints until the connection works.
Database Debugging
Mongoose connection failures commonly result from incorrect credentials, network restrictions, or invalid connection strings.
Key Takeaways
Verify database connectivity before implementing CRUD.
Check credentials and network access when connection fails.
Use the database connection name to confirm the selected database.