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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.
News is News All Over the World (writing newspaper articles) Writing newspaper articles is a fun and interesting line of work. Newspapers exist in big cities, small towns, within corporations and on college campuses. Newspapers are printed for special interest groups as well as for world and national news. There are free newspapers and papers that appear for sale on newsstands every day. With such a large variety of newspaper types printed, there are myriads of possible opportunities for writing newspaper articles. There are some basic rules to writing articles for any newspaper and there are also some specific aspects to know about each type. Writing Newspaper Articles In general, to write a newspaper article there are a few rules that apply across the board. First, the news has to be relevant. Because newspapers make up a genre of writing that is constantly refreshing itself, there is no room for common knowledge or historical pieces. The exception is if those kinds of writing serve to connect to a current issue or event. People who read newspapers want to know what’s happening now. For that reason, writing newspaper articles often involves relatively high pressure to get the latest news written each and every day. There are some low-pressure possibilities in writing newspaper articles though. The Infrequent Print Several newspapers are only printed weekly or even monthly. In small towns that must get their papers printed off-site, it is not feasible to create a paper each and every day. That means that there’s a week, every week, to get the news in and written. Another example of low pressure writing for newspapers is working for a free publication. Free newspapers are often geared to a special interest group. Since that group is not paying for its paper, they may only receive the interesting tidbits once a month. Writing for these kinds of newspapers becomes focused on creativity and niche writing because the current events will have already reached the audience through more frequent publications. The Daily News from Top to Bottom The most reliable and frequent publications are those of big, national newspapers. The staffs are very large and are able to print very clean copies of very full newspapers. By clean, that means without errors. Smaller papers are also printed daily, but they seem almost insignificant except to the people of the local community. They receive national news second hand and run very small staffs. Interestingly enough, none of these daily papers are really about the news. Of course that is where most of the effort lies and that is the reason that people buy the papers, but it is not the root of a newspaper. Writing newspaper articles is a job heavily dependent on the advertising industry. A newspaper will only be as large as there are ads to pay for it. Newspapers do not make their money at the newsstand. They pay the bills and the employees with money from advertisers. On Campus News Working for a university paper will not be representative in the area of newspaper advertising. While some businesses do pay for ads in university papers, the funding comes from the school. If for some reason there were no advertisers one day, the paper would still go out. University publications are much more focused on the development of the students than making a successful business. Most campus papers are free and are created by students. School is a great place to get started in writing newspaper articles. The environment is challenging, but nurturing at the same time. The deadlines and standards still exist, but the writer gets great encouragement and training through the work. After working for a college paper, it will be much easier to get a job with newspapers of the cities and towns. Writing newspaper articles can be a great job. There are so many opportunities to get into writing that it is hard to pass them up. Some jobs may be very difficult to get, but others will be steps towards increasing writing success. Patent and copyright law Understanding Patent and Copyright Law Patent and copyright law gives the inventor the exclusive rights to the invention. No one else can produce the invention for a set period of time under patent and copyright law. Patent and copyright law is set up to protect inventors. The law on patents can be found in the United States Constitution, Article 1, Section 8 and in Title 35 of the United States Code. The agency that is in charge of patent laws is a Federal Agency known as the Patent and Trademark Office. Anyone who applies for a patent will have their application reviewed by an examiner. The examiner will decide if a patent should be granted to the inventor. Individuals who have their patent application turned down can appeal it to the Patents Office Board of Appeals. Just because someone has a patent does not mean that they have the right to use, make or sell the invention. For instance, if a drug company comes up with a new drug, they can get a patent on it. However, it would not be available to be sold to the general public until the drug becomes approved by other regulatory bodies. Likewise, someone may invent an improvement to an existing product, yet they will not be allowed to produce or sell the item until they obtain a license to do so from the owner of the original patent holder. For someone to receive a patent, as stated, they must fill out an application on their invention. The application will entail the details of the invention and how it is made. In addition, the person applying for a patent must make claims that point to what the applicant deems or regards as his or her invention. A patent may have many claims with it. The claims protect the patent owner and notify the public exactly what the individual has patented or owns. If someone infringes upon patent and copyright law, it is usually enforced in a civil court setting. The owner of the patent will generally bring a civil lawsuit against the person who has infringed upon their patent and ask for monetary compensation. In addition, the patent owner can seek an injunction which would prohibit the violator from continuing to engage in any acts that would infringe upon their patent in the future. Many patent owners will make licensing agreements (or contracts) with others. These agreements allow another person or company to use someone’s patented invention in return for royalties. In addition, some patent holders who are competitors may agree to license their patents to each other to expand both of their profits. Most everything we use in our day to day life was invented by someone. That person had to seek out a patent for their invention. Patent and copyright law protects inventors from having their ideas and inventions stolen out from under them. This makes the playing field more level for individuals. Without these laws, the marketplace would be out of control and the small guy would probably be eaten alive by big business |