Reverse proxy technology for web servers should be deployed if:

A.
http servers’ addresses must be hidden.

B.
accelerated access to all published pages is required.

C.
caching is needed for fault tolerance.

D.
bandwidth to the user is limited.

Explanation:
Reverse proxies are primarily designed to hide physical and logical internal structures from outside
access. Complete URLs or URIs can be partially or completely redirected without disclosing which
internal or DMZ server is providing the requested datA . This technology might be used if a tradeoff
between security, performance and costs has to be achieved. Proxy servers cache some data but
normally cannot cache all pages to be published because this depends on the kind of information the
web servers provide. The ability to accelerate access depends on the speed of the back-end servers,
i.e., those that are cached. Thus, without making further assumptions, a gain in speed cannot be
assured, but visualization and hiding of internal structures can. If speed is an issue, a scale-out
approach (avoiding adding additional delays by passing firewalls, involving more servers, etc.) would
be a better solution. Due to the limited caching option, reverse proxies are not suitable for
enhancing fault tolerance. User requests that are handled by reverse proxy servers are using exactly
the same bandwidth as direct requests to the hosts providing the data.