REST API Errors
When working with REST APIs, common errors include:
Client-Side Errors
1.
400 Bad Request: Malformed JSON, missing/invalid parameters.
2.
401 Unauthorized: Incorrect/missing authentication credentials.
3.
403 Forbidden: Insufficient permissions.
4.
404 Not Found: Incorrect endpoint URL, non-existent resource.
5.
405 Method Not Allowed: Incorrect HTTP method for the endpoint.
Server-Side Errors
1.
500 Internal Server Error: Unhandled server exceptions, and misconfigurations.
2.
502 Bad Gateway: Issues with the upstream server.
3.
503 Service Unavailable: Server maintenance or overload.
4.
504 Gateway Timeout: Slow response from an upstream server.
Solutions
Authentication Issues: Use correct credentials, check user roles, and ensure HTTPS.
Client-Side Errors: Validate payloads, check URLs, and include all required parameters.
Server-Side Errors: Check server logs, ensure dependencies are operational, and handle load balancing.
Debugging Tips
Use tools like
Postman for testing.
Enable server logging.
Validate input data.
Implement proper error handling in your code.