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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.
Can Facebook or MySpace Help You Land a Job? The Internet is quickly becoming the vehicle of choice for people looking for a job and for employers looking for people to hire. There are many job sites on the Internet dedicated to matching up employees and employers, and most people turn to the Internet today when they are hunting for a job instead of turning to the classified ads in the local paper. Job hunting websites may all be well and good when you are looking for a job, but what about social networking sites. Everyone knows how popular sites like Facebook and MySpace are online, but can they help you get a job? If you are in the job market, can these sites be your foot in the door, or a one way ticket to the unemployment line? The answer is that there is no easy answer. To know if you can find a job using Facebook or MySpace, you have to know how employers feel about these sites, and employers have mixed feeling about them. Some companies are actively using social networking sites to track down employees that meet their company’s employee profile and have had great success finding workers via social networking sites. Other companies wouldn’t touch these sites as a hiring tool with a ten-foot poll – in fact, many companies don’t even want you to access these websites from their company computers. The real answer to this question has more to do with exactly what kind of job you are looking for. Are you looking for an executive position at a company? Then stay off of the social networking sites, at least for job hunting (and maybe all together). No company is going to look for its top brass on a social networking site, and you will be wasting your time. However, if you are looking for entry level or hourly wage work, the social networking sites like MySpace and Facebook may be the answer for you. Many hourly wage employers in particular, like fast food restaurant chains and mall stores, use MySpace and Facebook to look for potential employees in their area. If a potential employer sees your profile and thinks you may be a good fit for their company, they will send you an email or an instant message and get the ball rolling. You should also, however, carefully consider the downsides of using social networking sites as a job tool – and you should carefully consider how and if you use these sites at all if you are in the market for a new job. Most people wouldn’t want their parents to see their social networking site profile, let alone potential employers. If you have rude and off color material, political or religious material, and inappropriate photos of yourself on your profile, a potential employer will be turned off, and you might lose your chance at that job. Most people give up way too much of their privacy when they use these kinds of sites, and your social networking site profile may offer a window into a side of you an employer might not be overly impressed with. Further, you can open yourself up to danger by using these sites to job hunt. If someone approached you in the street and offered you a job, would you accept? Then why would you accept a face value an approach by someone on social networking site? If you do get approached for an interview, never meet anyone in a private place, and do your homework to make sure the facts check out before you go for the interview. One last reality check – there are over 60 million users on MySpace alone. How will an employer find you in the crowd? MySpace and Facebook may help you in your job hunt, but don’t count on them as your sole avenue into the job market. Web Hosting - Free vs Paid Web Hosting Options Everyone likes to get something for free. But as the existence of spam shows, free isn't always good. Sometimes, it's downright harmful. Deciding whether it's worth the cost to pay for hosting involves a number of complex considerations. Hosting companies that offer free services obviously can't stay in business from the money they make from you, since there isn't any. So why do they offer free hosting and how do they make money? Why should you care, so long as you get yours? Because, in reality, there's a price of some kind for everything, even something that's free. Free hosting may come from a company doing a promotion to attract business. They expect to demonstrate their value, then charge an existing customer base fees to make up for what they lost by the (short term) offer. It's in essence a form of advertising. But free hosting is offered by lots of companies that are not dedicated to managing servers for websites. Google, Yahoo and thousands of others provide a modest amount of disk space and a domain name on a server for free. Users are free to do anything they like with it, though if the load becomes excessive you can be shut down. That introduces one of the more obvious drawbacks to free hosting: resource limitations. Typically free hosting offers a relatively small amount of space. That's often enough to host a few dozen pages. But an active site can quickly run out of room. A more serious limitation is load. Free hosting often places strict limitations on the allowed amount of bandwidth consumed. If you become a well-visited site, when users start banging away on the server, you can be asked to leave or simply be blocked for the rest of the month. Or, you may be permitted a certain quantity of total bandwidth use per month. Once it's reached, no one else can reach your site until the beginning of a new month. At the same time, you will certainly be sharing equipment with thousands of other sites. Their load can affect your performance, prompting you to move. Migrating an established site brings with it a number of thorny issues that might be better avoided in the first place. Free hosting has another potential downside: lack of support. When you pay for hosting you typically get, at least in theory, a certain level of support. Backups in case of disaster recovery from a hack or server failure, assistance in analyzing connection problems... the variety is endless. With free hosting you usually get none of that. A company or site that offers free hosting will usually recover a disk or server that fails completely and you'll be back up when they do. But if only selected portions of the drive fail, or you lose a few files through a virus attack or accidental deletion, you have to rely on backups to recover. A free service will usually come with no such option. That may not be a problem if you have a small site. You can make copies of everything at another location and simply recover the site yourself - if you have the discipline to keep it current and the skills to make and restore the copy. Free hosting will typically come with a few email addresses, intended to be used for administration and other tasks. But if your needs grow beyond that, you'll need to seek another option. The email service also comes with minimal oversight. The server may be protected against spam attacks and provide virus scanning. But few free services will provide even minimal help with any issues that arise. But the most serious limitation may have nothing to do with any technical issues. Free hosting services often require that your site's pages carry some form of advertising that pays the host, not you. That may be fine for you, or it may not. Individual circumstances vary. On the other hand, if you're just starting out, a free hosting option can be a great way to learn needed skills and a few of the potential pitfalls. You can set up a site, learn how to maintain and improve it, and not care too much if it gets hacked. Freely hosted sites can be a great platform for learning the ropes. Free services don't usually offer any of the features that an active, commercial site will need sooner or later. So if you plan to grow, it may be reasonable to get the free service for a while, knowing you'll have to migrate when you become popular. But in the long run, you get what you pay for and you may need to pay for what you want. |