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What does 502 bad gateway mean? we often encounter this kind of situation when playing with the computer, so it is very uncomfortable. How to solve it with 502 bad gateway?

What does 502 bad gateway mean?

502 Bad Gateway refers to the wrong gateway, invalid gateway; indicates a network error in the Internet. The page feedback given in the WEB browser is shown.

Meaning: this usually does not mean that the upstream server has been shut down (unresponsive gateway / agent), but that the upstream server and the gateway / agent do not agree to exchange data. Given that the Internet protocol is quite clear, it often means that one or two machines have been incorrectly or incompletely programmed.

How to solve 502bad gateway

Give a popular explanation.

1. What is a 502 bad gateway error report

To put it simply, 502 is the gateway that reports an error type code bad gateway error.

two。 The cause of the error

Connection timeout We send a request to the server due to too many current links on the server, the server can not give a normal response, resulting in this kind of error

3. The way to save.

Of course, the best solution is to do it on the server, which is unlikely for everyone.

So what can we do to save it?

To put it bluntly, it's very simple.

It is-- refresh (not a general refresh)

The principle of refresh: many people may not know that there are two kinds of refresh.

The so-called refresh is actually downloading data from the server to local memory or hard disk buffer.

Then read the data from the local memory or hard disk to the browser to show us.

① basic refresh: click Refresh or use the F5 shortcut key

The basic refresh may just retrieve the data from the local hard drive to the browser and may not necessarily re-request to the server.

Most users refresh in this way most of the time, and there is no effect when 502 errors are reported.

② refresh from the server: if you re-click the link to the page you want to browse, you will find that the page with the "502 bad gateway" error message can be viewed normally after clicking the link.

Do you understand? When you click on the link to the web page you want to browse, the data will be re-downloaded from the server.

The solution is to refresh from the server: the shortcut key ctrl+F5, which is to resend the request to the server.

If the server can give you a normal response, you can see the page.

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