What Is a 599 Status Code?

This status code is not specified in any RFCs but is used by some HTTP proxies to signal a network connect timeout behind the proxy to a client in front of the proxy.

What causes a 599 status code?

A 599 status code is typically encountered when the server encounters an unexpected error or crash.

Some common causes of a 599 status code include:

  • Server overload: When the server receives more requests than it can handle, it may become overloaded and crash, resulting in a 599 status code.
  • Network failures: If there is a disruption in the network connection between the server and the client, it can lead to a 599 error.
  • Server-side errors: This could be caused by a software bug, a misconfiguration of the server, or a problem with the code running on the server.

3 examples of a 599 status code

A 599 status code may be encountered in a variety of situations, such as:

  1. During a high traffic event, when the server is receiving a large number of requests
  2. When there is a sudden surge in user activity, such as during a flash sale or product launch
  3. Following a server crash or other unexpected event

How to troubleshoot a 599 status code

If you encounter a 599 status code, here are some troubleshooting tips to help resolve the issue:

  • Check server logs: Look for any error messages or warnings that may indicate the cause of the problem.
  • Restart the server: Sometimes, simply restarting the server can resolve the issue.
  • Contact technical support: If the issue persists, contact your web host or technical support team for assistance.

How to prevent 599 status codes

To prevent a 599 status code from occurring, here are some best practices to follow:

  • Optimize server performance: Ensure that your server is configured properly and optimized for performance.
  • Implement load balancing: Distribute traffic across multiple servers to prevent overload on any one server.
  • Use a content delivery network (CDN): A CDN can help to improve performance and reduce the load on your server.

3 best practices for 599 status codes

To ensure optimal website performance and avoid 599 errors, follow these best practices:

  1. Set up automated monitoring and alerts: Monitor your website’s performance and set up alerts to notify you if any issues arise.
  2. Implement disaster recovery plans: Have a plan in place to quickly recover from any unexpected events, such as a server crash.
  3. Regularly test server performance: Test your server’s performance under various conditions to identify and address any potential issues.

Additional resources

Return to List of HTTP Status Codes