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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.
US copyright law U.S. Copyright Law Covers Artistic Expression and Creative and Intellectual Works The US Copyright Law grants rights to individuals for the works they create. The US Copyright Act of 1790 has changed over the years. The current basis of US copyright law is based on the Copyright Act of 1976. US copyright law is relatively automatic. Once someone has an idea and produces it in tangible form, the creator is the copyright holder and has the authority to enforce his exclusivity to it. In other words, the person is the owner of the creation. It is not necessary that a person register their work. However, it is recommended and it can serve as evidence if someone ever violates a copyright. It is interesting to note that when an employer hires an employee to produce a work that the copyright is given to the employer. Violations of US Copyright Law are generally enforced in a civil court setting. However, there could also be criminal sanctions brought against someone who violates US copyright law. Someone that is in serious violation of US Copyright Law such as counterfeiting can find themselves on the inside of prison looking out. People need to understand that the copyright symbol is not a requirement. Someone may have a copyright, yet their work may not have a copyright notice or symbol. US Copyright Law covers a wide range of things that are derived from artistic expression, intellectual or creative work. This includes things such as literary works, music, drawings, photographs, software, movies, choreographic works such as ballets and plays, poems, paintings and more. The law covers the form of expression, not the concept, facts or the actual idea of the work. This means that someone can use another person?s idea or concept and produce their own take on it. However, copying another person?s work is a violation. It should be noted that some things may not be copyrighted but they may be protected by a patent or trademark. Individuals who have a copyright on a particular piece of work can do with it what they will. They may choose to copy it and sell it. They may display their work or perform it in public and charge admission, or they can assign or sell the work to someone else. Individuals who have a copyright can also choose to do nothing with their work, if that is their desire. However, if someone comes along and takes the work and tries to use it in some way, that person is still in violation of the owner?s copyright. Copyrights cover published and unpublished work. Anyone who is in the creative arts arena should be very careful that they do not violate US Copyright Law. For that matter, anyone who is a fan of the creative arts should make sure they are not in violation of a copyright. Simple things like uploading, downloading and sharing music or movie files can result in serious charges and fines being brought against them. With the popularity of the Internet and file sharing software there many copyrights are currently being violated. Copyright owners are starting to take a stand against them and are hunting down the perpetrators. Be careful that you are not overstepping your boundaries and violating someone?s copyright law.
The Importance of Written Communication (written communication) Written communication is just as important as oral communication. Of course, all communication requires a clear concise flow of ideas, and words that are easily understood by any reader or listener. Written communication is one of the most difficult forms of communication as writers are typically prone to write for themselves, instead of for their audience. It is important for readers to understand what has been written and why it has been written. Writing is very different from oral communication, because words are written they cannot be taken back. Communicating through writing is more concrete than verbal communication with more room for mistakes and misunderstandings. The slightest misunderstanding can cause chaos for many, so it is important to right as clear and concise as possible. This form of communication is defined as a clear expression of ideas in writing. The clear expression of ideas includes grammar, organization, and structure of an essay, book, article, or report. Grammar is a large part of written communication, and writers must always consider spelling, punctuation, writing style, and wording before displaying their work to the world. Proper grammar and form may have a varying importance for different writing jobs, and usually depend on the method of communication used for that job. However, it is always important to strive to use correct grammar, spelling, and punctuation. Most writers use spell check and grammar check on their computers to ensure that the grammar and spelling is suitable. Grammar is also a major factor when writing as a freelance writing and submitting work to an editor. Many editors will reject further submissions from writers who have too many grammar and spelling errors. Organization of a letter, essay, article, or book is also important factors of written communication. Communication should always have a logical organization that is easy for readers to follow. For the reader, it is much easier to read a paragraph with one common theme that relates to the entire work. Most writing requires a clear flow of ideas and proper transitions to indicate when a new idea is being presented. However, transitions are not often needed for pieces of writing that are clearly organized. Ideas should also be expressed in a manner that is easy for the reader to understand and recognize. Data in the writing should also be presented accurately to support conclusions and recommendations given by the writer. The structure is also important in a piece of writing. All writing is organized into five to seven sentence paragraphs that all relate to each other. The number of paragraphs usually depends on the work that is being written. For example, it is common for essay to contain five concise paragraphs that all relate to a common theme. Generally, essays begin with an introductory paragraph, followed by three supporting paragraphs, and ended with a concluding paragraph. The basic structure of a piece of writing is only the beginning of written communication; the words used and the organization of the work is important to the readers understanding of the work. In many cases, the style format, and content must be adjusted to the communication level of the reader. The ability to convey ideas to a certain reader are very important, and a key component of written communication. Like oral communication, written communication can be seen as an aspect of life that makes the world go round, and learning to communicate through written word has become a basic skill for most people. Communication is needed in all aspects of life, and although many people cannot write well, it is important to be able to communicate out loud and on paper.
Web Hosting - Redundancy and Failover Among the more useful innovations in computing, actually invented decades ago, are the twin ideas of redundancy and failover. These fancy words name very common sense concepts. When one computer (or part) fails, switch to another. Doing that seamlessly and quickly versus slowly with disruption defines one difference between good hosting and bad. Network redundancy is the most widely used example. The Internet is just that, an inter-connected set of networks. Between and within networks are paths that make possible page requests, file transfers and data movement from one spot (called a 'node') to the next. If you have two or more paths between a user's computer and the server, one becoming unavailable is not much of a problem. Closing one street is not so bad, if you can drive down another just as easily. Of course, there's the catch: 'just as easily'. When one path fails, the total load (the amount of data requested and by how many within what time frame) doesn't change. Now the same number of 'cars' are using fewer 'roads'. That can lead to traffic jams. A very different, but related, phenomenon occurs when there suddenly become more 'cars', as happens in a massively widespread virus attack, for example. Then, a large number of useless and destructive programs are running around flooding the network. Making the situation worse, at a certain point, parts of the networks may shut down to prevent further spread, producing more 'cars' on now-fewer 'roads'. A related form of redundancy and failover can be carried out with servers, which are in essence the 'end-nodes' of a network path. Servers can fail because of a hard drive failure, motherboard overheating, memory malfunction, operating system bug, web server software overload or any of a hundred other causes. Whatever the cause, when two or more servers are configured so that another can take up the slack from one that's failed, that is redundancy. That is more difficult to achieve than network redundancy, but it is still very common. Not as common as it should be, since many times a failed server is just re-booted or replaced or repaired with another piece of hardware. But, more sophisticated web hosting companies will have such redundancy in place. And that's one lesson for anyone considering which web hosting company may offer superior service over another (similarly priced) company. Look at which company can offer competent assistance when things fail, as they always do sooner or later. One company may have a habit of simply re-booting. Others may have redundant disk arrays. Hardware containing multiple disk drives to which the server has access allows for one or more drives to fail without bringing the system down. The failed drive is replaced and no one but the administrator is even aware there was a problem. Still other companies may have still more sophisticated systems in place. Failover servers that take up the load of a crashed computer, without the end-user seeing anything are possible. In fact, in better installations, they're the norm. When they're in place, the user has at most only to refresh his or her browser and, bingo, everything is fine. The more a web site owner knows about redundancy and failover, the better he or she can understand why things go wrong, and what options are available when they do. That knowledge can lead to better choices for a better web site experience.