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Web caching:

• Web caching is defined as a temporary storage of documents such as images, video files, HTML pages to reduce the bandwidth usage.

• It finds the desired content and brings the content close the user onto the same LAN of the host.

• It handles the requests send by the user’s browser, which could be directed to the origin server and the same content is saved as cache files.

Web cache keeps the copies of requested objects of the client in the storage.

Web caching reduces the delay in receiving requested objects as given below:

• The web caching can reduce the response time of the client’s request when the bottle bandwidth between the client and the server is much less than the bottleneck bandwidth between the client and the cache.

• Web caching can reduce the response time for the client requests when there is a high-speed connection between the client and cache, and the cache has the requested object.

• Web caching reduces the traffic on the institution’s access link to the internet. Therefore, the institute doesn’t have to update its bandwidth cables quickly. Thus, it can reduce the cost.

• If the cache memory size is high, it can handle many requests quickly. Thus, it reduces the response time.

• Finally, the traffic on the internet decreases substantially as a whole.

Therefore, the web caching reduces the delay in receiving the requests for all objects requested by the user.


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