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HTTP 503 — Service Unavailable
- Status Code
- 503
- Name
- Service Unavailable
- Meaning
- Service unavailable
- Category
- 5xx — 服务器错误
Related
FAQ
How are HTTP status codes categorized?
1xx informational, 2xx success, 3xx redirection, 4xx client error, 5xx server error. 4xx and 5xx are most common.
What should I do when seeing a 5xx error?
Check server logs, verify no syntax errors, confirm database connections and third-party API availability. 5xx errors usually require backend investigation.