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Web Hosting - Bandwidth and Server Load, What's That?
Two key performance metrics will impact every web site owner sooner or later: bandwidth and server load.
Bandwidth is the amount of network capacity available, and the term actually covers two different aspects. 'Bandwidth' can mean the measure of network capacity for web traffic back and forth at a given time. Or, it sometimes is used to mean the amount that is allowed for some interval, such as one month. Both are important.
As files are transferred, emails sent and received, and web pages accessed, network bandwidth is being used. If you want to send water through a pipe, you have to have a pipe. Those pipes can vary in size and the amount of water going through them at any time can also vary.
Total monthly bandwidth is a cap that hosting companies place on sites in order to share fairly a limited resource. Companies monitor sites in order to keep one site from accidentally or deliberately consuming all the network capacity. Similar considerations apply to instantaneous bandwidth, though companies usually have such large network 'pipes' that it's much less common for heavy use by one user to be a problem.
Server load is a more generic concept.
It often refers, in more technical discussions, solely to CPU utilization. The CPU (central processing unit) is the component in a computer that processes instructions from programs, ordering memory to be used a certain way, moving files from one place to the next and more.
Every function you perform consumes some CPU and its role is so central (hence the name) that it has come to be used as a synonym for the computer itself. People point to their case and say 'That is the CPU'. But, the computer actually has memory, disk drive(s) and several other features required in order to do its job.
Server load refers, in more general circumstances, to the amount of use of each of those other components in total.
Disk drives can be busy fetching files which they do in pieces, which are then assembled in memory and presented on the monitor, all controlled by instructions managed by the CPU.
Memory capacity is limited. It's often the case that not all programs can use as much as they need at the same time. Special operating system routines control who gets how much, when and for how long, sharing the total 'pool' among competing processes.
So, how 'loaded' the server is at any given time or over time is a matter of how heavily used any one, or all, of these components are.
Why should you care?
Because every web site owner will want to understand why a server becomes slow or unresponsive, and be able to optimize their use of it.
When you share a server with other sites, which is extremely common, the traffic other sites receive creates load on the server that can affect your site. There's a limited amount you can do to influence that situation. But if you're aware of it, you can request the company move you to a less heavily loaded server. Or, if the other site (which you generally have no visibility to) is misbehaving, it's possible to get them moved or banned.
But when you have a dedicated server, you have much more control over load issues. You can optimize your own site's HTML pages and programs, tune a database and carry out other activities that maximize throughput. Your users will see that as quicker page accesses and a more enjoyable user experience.
Web Hosting - How To Select A Web Host As with many purchases, our first impulse when selecting a web hosting company is to go with the cheapest. Hey, they're all alike, why pay more? Au contraire. There are a number of objective criteria that separates one web hosting company from another and money is only one of them. And not the most important one. Selecting a company based on price alone is equivalent to selecting an auto mechanic on price alone. Sure, he may maintain or fix your car cheaper. But will the car spend all the time in the shop and none on the road? The first consideration is 'horsepower'. Do they have the capacity to carry your load and deliver decent performance? Most hosting companies will advertise that they have huge bandwidth and hundreds of servers. They're usually telling the truth. But there's a difference between existing capacity and usable capacity. If they also have thousands of sites with millions of visitors per day the available or free capacity will be much lower. A big pickup truck may be able to tow 5,000 lbs. But not if it's already carrying 4,999. Be sure to ask about available capacity, and have the prospective company back it up with reliable numbers. If you can't interpret the information they provide, find someone to help you do so. Next, and a very close second, is reliability. A lot of power is worthless if it's cut often. Outages are a normal part of business. Even Google and Microsoft go down from time to time. The difference is, it happens rarely and they have failover plans. That means, if their site/system does go down it's either up again in a flash, or you never see the outage because a backup system kicks in automatically and seamlessly. Be sure to grill the company closely about their up time. They'll often tout 99.6%, or some such figure. But, like the on-time figures of the airlines, those numbers can be shaded by adjusting the definition of 'up time'. What matters to you is whether your visitors will be able to reach your site at any time of the day or night they might want to. Find out what systems, both technical and human, they have in place to deal with failures of all sorts. Servers can go down, networks can fail, hard disks can become defective and lose data even when the other components continue to work fine. The result is YOUR site is unavailable, which is all that matters to you. The web hosting company should be able to deal with all of that and have you up again very quickly. Last, but not least, is security. With the continuing prevalence of viruses and spam, you need to know that the web hosting company you select has an array of methods for dealing with them. That means a good technical plan and staff who are knowledgeable in dealing with those issues. The old saying: 'an ounce of prevention is worth a pound of cure' is more true here than anywhere else. All these issues are central to finding a web hosting company that can deliver the services you need. After those criteria are satisfied by a number of candidates, then you can start narrowing them down by price. Continuing Education Key to Being a Better Employee Employers now recognize the importance of continuing education for employees. Over the past few years, more and more employers have begun to offer tuition reimbursement and continuing education classes to their employees. While this was once thought of as an excessive expensive, it is now understood that continuing education benefits the company as much or more as it does the employee. The job market is becoming more and more competitive everyday. Only the best employees are getting jobs in certain sectors. That means that your skills need to be sharp in order for you to remain valuable to your company. This is where continuing education comes into play. No matter what type of job you have, just about all companies are investing in continuing education. The reasons why are simple. Even though the company may spend a good deal of money on continuing education for their employees, they see an even larger return. By having employees that are on the top of their game, the company will be more productive as a whole. Thus the company will make more money. With that in mind, it is very important that employees always take advantage of continuing education classes when they can. You will be able to stay on top of whatever new trends are coming up and possibly acquire skills that will allow you to move up in the company. By taking continuing education classes, you will become more productive. Studies have found that employees that continue to have their skills refreshed and renewed are more productive on the job. This is a perk for both employees and their employers. You will be able to finish more work in less time and with more understanding. Thus making your time at work easier. If you are not sold on the idea of continuing education, think of it this way. Your employer is paying for it. It is a perk of your job that you should take full advantage of. If you are working towards acquiring skills that will lead you to a promotion or an entirely new job, you are doing something to better yourself. And, it is costing you less, or nothing at all. The best companies to work for in the country have great training programs. This is no coincidence. These companies, which also make a ton of money spend thousands of dollars training their employees so that they can go out and make the company the most money possible. Less successful companies have begun to follow suit. No matter what type of job you have, there are continuing education programs that can help enhance your job experience. Continuing education is a great way to break out of a rut. If you are eager to change jobs or get a promotion, you will fair much better in the job market if you do some continuing education. Use whatever means your company offers to better yourself and become more marketable. The type of continuing education you choose depends on your career goals. It is always helpful to have an advanced degree in a certain field. If tuition reimbursement for graduate school is an option, take it. Having a Master’s or PHD will help you become an expert in your field of study. If your job has company continuing education, take them up on it., Even if a promotion is not exactly what you are looking for, being cross trained is always a good idea. Gain as much in the way of knowledge and skills as you can. When you move on to your next job those skills will look great on your resume. |