Status Code 503 Service unavailable

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We must often encounter the open page prompt 503 Error status code, which is the Windows system error warning, that is, the server is temporarily unable to respond to the meaning, this situation is generally refreshed several times to solve the problem.

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Windows2000 will prompt the number of connections too many, Windows2003 will prompt service unavailable, the reason is the same.

Reason:

1 A series of errors occur in a process where a Web site's program consumes too much resources or serves the application pool;

2 The website exceeds the limit of IIS, the number of visitors is too large, too many concurrent requests, the number of connections exceeds the limit;

3 The application pool for the virtual server is not configured correctly in IIS;

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Workaround:

1 Restart the site IIS to recycle the application pool;

2 increase the number of connections and website resources;

3 Modify the program error;

Status Code 503 Service unavailable