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502 (bad gateway) causes and Solutions
2022-07-03 01:56:00 【Under the white night】
A term is used to explain
502 yes Error type bad gateway Wrong gateway .
The reasons causing
Connection timeout We send... To the server request , Because the server has too many links , The server can't respond normally , There is such an error
resolvent
Refresh from server （ctrl + F5）： Is to send the request to the server again , Download data on the server .
Basic refresh （F5）： Maybe it's just retrieving data from the local hard disk to the browser , It is not necessary to re send the request to the server .
Refresh In fact, from The server Download data to Local memory or hard disk buffer in , Then read the data from the local memory or hard disk to the browser to show us .
Possible causes
- DNS buffer .
- opened agent
- DNS Hijacked
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