We help our clients by looking into their source code and helping them find out the parts which cause performance lags and guide them to get rid of these issues.
The HTTP load-balancer also comes with a failover which means that, if a web server stops responding, the request will be rerouted to another server. Your corporate firewall may have a proxy server where everyone's internal computer points to a central proxy server, and that server goes out and services requests.


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