When the web application generates a response to a particular client request, there is a chance that the same kind of request may arrive again, or the same resource may be requested again. For every similar request, using the web application to generate the response again and again may turn out to be a not so elegant solution.

The reverse proxies can at times help understand the request and response patterns and implement caching for them. When caching is enabled, when the similar request arrives again or the same resource is requested again, the reverse proxy, instead of forwarding the request to the web application can send back the cached response directly, hence offloading a lot of overhead from the web application. This results in the improved performance of the web application and a shorter response time for the clients.