503

Service Unavailable

5xx Server Error

The server is not ready to handle the request. Common causes are maintenance or overload.

Common Causes

  • Server maintenance
  • Overloaded server
  • Deployment in progress

How to Fix

  • Wait and retry
  • Check status page
  • Scale resources

About HTTP 503

HTTP 503 Service Unavailable is a server error response status code. This indicates that the server encountered an error while processing the request.

Monitoring for 503 Errors

Server errors like HTTP 503 can significantly impact user experience and should be monitored proactively. Setting up uptime monitoring helps you detect these errors before your users report them.

502 Bad Gateway504 Gateway Timeout

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Related Status Codes

500 Internal Server Error501 Not Implemented502 Bad Gateway504 Gateway Timeout505 HTTP Version Not Supported507 Insufficient Storage508 Loop Detected511 Network Authentication Required