I have already discussed about proxy servers and its advantages. In this
post i will explain about Caching Proxy servers
Caching Proxy servers:
These are the proxy servers which keeps a copy of the previously accessed pages,
images and other type of media in the server cache for some period of time. If
the same user or any other user requset for the same file, the file is served
from the cache of the server. After the cache time period expired, the file is
removed from the cache. Most ISPs and large businesses have a caching proxy.
Caching proxies were the first kind of proxy server.
Advantages of the Cache Proxy
servers: As we can see that the web page, images and other media
accessed by a user is stored in the cache. Next time these previously accessed
pages are served directly from the cache not from the original server. So it
reduces bandwidth consumption and faster access. The time of response is faster
now. This is really good when you want to access some blogs which you have
accessed before. Proxy server will serve the page from the serve cache even if
the website is currently offline.
Disadvantages of Cache Proxy
servers: Although Cache Proxy servers provide faster access to some
frequent resources. But it has a big advantage. It is not good for those website
which changes the content and media frequently.
Some poorly configured proxy servers also have some big
advantages which creates problem in logging into a website. So use this proxy
server with a good server administrator only.
This post is published on hackingtricks.in and may be
reproduced on some content theft websites which copy my posts daily. Try to
avoid those websites
But this advantage is not big now as most of th web
masters are also optimize their website for caching and use some server side
caching mechanisms by using CDNs. CDN cache static data of the website for the
long period of time on the distributed servers.
Read more: http://learnethicalhackingtricks.webnode.in/proxy/introduction-to-caching-proxy-servers/
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