Thursday, November 8, 2012

Why Are Web Servers Important?

By Josh Hart


Virtually everyone has hearded of web servers but the majority of individuals don't in fact understand exactly what they are! In a certain sense a spider is an internet server but that is not the kind of internet server we have in mind. This write-up describes in straightforward terms just what a net web server is and also describes why they are so vital for the reliable performance of modern-day sites. The most usual input use today is probably Apache. It is a software application but it runs on a physical equipment gadget (or server). So when somebody mentions an internet server they usually mean both the hardware device and the software that is operating on it. Lets look at just how these servers normally work:

\* initially you enter the address of a websites in your browser, say Amazon or eBay

\* your browser delivers a page request to the web server at the address you offered (its like a street address)

\* the Amazon or eBay server intercepts your web page request

\* if the the server does indeed have the page you requested then it will return the web page to your browser

\* you see the web page that you requested appear in your browser as if by magic: -)

The above description is a simplified view of an internet server but it gets the job done of describing how they work. Nonetheless lets look at a much more complex scenario. This is when the server sits in front of numerous other servers. The reason for this is that if a website obtains lots of traffic (I want) then if only one server is used it will rapidly get overworked and grind tro a stop. This results in excellent gnashing of teeth and frustration as we switch our attention to an alternative website to discover exactly what we were seeking. However if there are lots of servers who can answer our request it is unlikely that any sort of one server will get overworked. The key is to ensure that the requests are shared among the offered servers. This is were our web server pertains to the rescue once again. One solitary server sitting in front of the other servers (or back-end servers) can easily intercept our web page requests and instead of trying to do all the work itself it shares the requests with the other servers who rather do all the work associateded with returning the requested web page (this is called lots balancing). This in turn causes delighted internet internet users as we typically get a quick response to our page request.

So from the above you could see that internet servers are an important part of the contemporary web especially when they are tons well balanced and offer us with quick responses to our queries and page requests.




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