Visitors will see different variations of these errors like: 502 bad gateway Nginx upstream errors arise while the proxy server receive an invalid response or no response from the origin server. With reverse proxy, it accepts a request from the client, forwards it to Upstream server(server that can complete the request), and returns the server’s response to the client. “ 502 bad gateway” is one such common nginx upstream error.Īt Bobcares, engineers at our 24/7 monitoring service monitor the servers and quickly resolve such nginx upstream errors. Result is website downtime and in turn, negative impact on SEO. It stays strong under high traffic, and help achieve high uptime.īut like any other server, Nginx too is susceptible to configuration and connection issues that cause nginx upstream errors. Nginx is the all-time favorite webserver and reverse proxy server for high traffic websites.
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