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Web Hosting - Sharing A Server – Things To Think About
You can often get a substantial discount off web hosting fees by sharing a server with other sites. Or, you may have multiple sites of your own on the same system. But, just as sharing a house can have benefits and drawbacks, so too with a server.
The first consideration is availability. Shared servers get re-booted more often than stand alone systems. That can happen for multiple reasons. Another site's software may produce a problem or make a change that requires a re-boot. While that's less common on Unix-based systems than on Windows, it still happens. Be prepared for more scheduled and unplanned outages when you share a server.
Load is the next, and more obvious, issue. A single pickup truck can only haul so much weight. If the truck is already half-loaded with someone else's rocks, it will not haul yours as easily.
Most websites are fairly static. A reader hits a page, then spends some time skimming it before loading another. During that time, the server has capacity to satisfy other requests without affecting you. All the shared resources - CPU, memory, disks, network and other components - can easily handle multiple users (up to a point).
But all servers have inherent capacity limitations. The component that processes software instructions (the CPU) can only do so much. Most large servers will have more than one (some as many as 16), but there are still limits to what they can do. The more requests they receive, the busier they are. At a certain point, your software request (such as accessing a website page) has to wait a bit.
Memory on a server functions in a similar way. It's a shared resource on the server and there is only so much of it. As it gets used up, the system lets one process use some, then another, in turn. But sharing that resource causes delays. The more requests there are, the longer the delays. You may experience that as waiting for a page to appear in the browser or a file to download.
Bottlenecks can appear in other places outside, but connected to, the server itself. Network components get shared among multiple users along with everything else. And, as with those others, the more requests there are (and the longer they tie them up) the longer the delays you notice.
The only way to get an objective look at whether a server and the connected network have enough capacity is to measure and test. All systems are capable of reporting how much of what is being used.
Most can compile that information into some form of statistical report. Reviewing that data allows for a rational assessment of how much capacity is being used and how much is still available. It also allows a knowledgeable person to make projections of how much more sharing is possible with what level of impact.
Request that information and, if necessary, get help in interpreting it. Then you can make a cost-benefit decision based on fact.
Promotions and Freebie Help from Kraft Foods Are you a Kraft junkie? Do you live for the rich, creamy luscious taste of classic Kraft Macaroni and Cheese? If you are a fan of Kraft Foods, did you know that you could get your hands on Kraft freebies? If you are interested in getting free samples, coupons and other promotions from Kraft foods, here is some information on how you can find promotions and freebies from Kraft Foods. Why Kraft Foods is a Good Company to Get to Know Better Kraft Foods is an excellent place to get your start as a freebie hunter. That is because Kraft Foods is known to put a lot of effort to keeping their brand names in the public eye. Kraft Foods also has many devotees that really follow the brand, and the company makes an effort to connect and stay connected to its consumers. If you are a Kraft Foods fan, you will find that they are a very accessible company when it comes to finding free offers and receiving free services and food product samples. Here are some tips on how you can find Kraft Food promotions and freebies. How You Too Can Get Kraft Food Promotional Freebies If you are interested in accessing free Kraft Foods freebies, here are some ways that you can get your hands on some free Kraft goodies. First, get to know the official Kraft Foods website. The official Kraft Foods website keeps its own promotions page. The promotions page is where you can find the details on the latest free offers, sweepstakes contests, promotions and offers. If you live in Canada, make sure that you consult the Canadian version of the Kraft Foods promotions webpage. For those of you in the United States military, check out the special Kraft Foods Military website for the latest special offers. This promotional Kraft Foods webpage is the best place to find all the latest deals and steals, and of course, freebies. How to Find Other Kraft Foods Promotions Although the Kraft Foods promotions page should be your first stop in finding freebies, not all the promotions available will always be listed on this page. Did you know that you could find many more Kraft Foods promotions simply by subscribing to their popular Food and Family Magazine? It is true. The good news is that the Kraft Works Food and Family Magazine is a totally free publication. This publication is published and distributed quarterly. It is filled with recipes and great coupons, and sometimes, free offers. You can sign up for the Food and Family Magazine directly on the Kraft Foods webpage. Did you know that Kraft Foods is now also publishing a new free online publication, titled Meal and Fitness Plan? This is a free and totally customizable lifestyle publication that can help you lead your best life by eating the best foods for you. How to Find the Availability of the Kraft Foods Offers Sometimes it can be difficult to find the availability of Kraft Food offers. This is mostly due to the fact that the Kraft Foods Corporations maintains many different sites, including a US site, a US Military site and a Canadian site. Make sure that you are checking the right site for you, and that you check the site frequently and periodically in order to get the best deals. The offers and promotions may last from a few days to several months, so make sure that you search the page often. Are There Any Risks to Getting Kraft Foods Freebies? Be aware that when you request free Kraft Foods freebies, you will be placed on mailing lists. You may also receive email offers, so be prepared for an inflow of messages to your inbox. Web Hosting - DNS, How The Internet Keeps Track of Names The way computers communicate is, in a way, very similar to something very familiar: the postal system that delivers letters and packages. Here's how... The Internet is just what the name suggests, a large inter-connected set of networks. But those networks are pointless without the one part that forms what is called their 'end-nodes', otherwise known as computers. Those computers often need to share information because the people who use them want to share information. But, in a system where there are millions of separate computers, how can you enable them all to communicate? One very important feature of that solution is performed by something called DNS, the Domain Name System. Every part of a network that is going to send or receive information is assigned an IP address. That's a numeric identifier that uniquely specifies a particular 'node', such as a computer, a router that directs traffic or other component. They look like this: 209.131.36.158 But those numbers are more difficult for people to remember and work with. They also aren't very attractive from a marketing perspective. So, a naming system was layered on top of some of them, mostly the computers involved, though routers have names, too. But once you have a system that associates a unique IP address to a given name, you need some way of keeping track of all of them. That's carried out by several different pieces of the system: Name Registrars, DNS Servers and other components. The Name Registrars, overseen by IANA (Internet Assigned Numbers Authority) and other international bodies, provide and keep track of domain names. When you register with GoDaddy or any of a hundred other intermediate companies, ultimately that information makes its way into a number of specialized databases stored inside DNS Servers. A DNS Server is the hardware and/or software that tracks and forwards the IP Address/Domain Name pair from one place to the next. In many cases, there are a number of them between your browser and the remote computer you want to share information with. Suppose you request information from, say, Yahoo's site by clicking on a link on their site. DNS resolves (translates) the name of WHO IS making the request and OF WHOM, to addresses, then passes the request through the network to the requested IP address. The requested data is then passed back through the mesh of network components to your computer and displayed in your browser. Whether the communication is between a desktop computer and a server somewhere, or between one server and another, the process is essentially the same. DNS servers translate names into IP addresses and the requests for data are forwarded on. In some cases those DNS servers are part of a specialized network computer whose sole job is to do the translation and forwarding. In other cases the DNS software may reside on a server that also houses a database of general data, or stores email, or performs other functions. But however complicated the chain or the parts, the basic process is simple. Translate the name to an address, just as the postal system does. Whether international or local, your name is associated with an address, and the deliveries are made to the address, then forwarded to a particular name. |