What is web caching? (4) b) Describe how Web caching can reduce the delay in receiving...

What is web caching? (4) b) Describe how Web caching can reduce the delay in receiving a requested object. (4) c) Are there benefits for web caching other than reducing the delay? (2

Expert Solution

What is web caching?

Answer:

Web caching is the activity of storing data for reuse, such as a copy of a web page served by a web server.

It is cached or stored the first time a user visits the page and the next time a user requests the same page, a cache will serve the copy, which helps keep the origin server from getting overloaded.

(4) b) Describe how Web caching can reduce the delay in receiving a requested object.

Answer:

Web caching is used to reduce the time needed for a client to get a reply for the request that he sent.Web caching is done by a server (Proxy Server) that could be closer to the client. This server stores the object that the client asks for.
If this server has the object stored when a client asks for that, it will sendthe object directly to the client and the delay will be reduced.

Are there benefits for web caching other than reducing the delay?

Answer: Other benefits for web caching other than reducing the delay are:

Caching reduces bandwidth consumption
Caching reduces access latency
Caching reduces the workload of the remote web server by spreading the data widely among the proxy caches over the WAN.
In a scenario where the remote server is not available due to a crash or network partitioning, the client can obtain a cached copy at the proxy. Hence, the robustness of the Web service is enhanced

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