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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.
A Woman’s Appearance Do’s and Don’t for the Job Interview Proper dress and interview attire is one of the first and most important things that you have to work with when you are invited to an interview. Whether you are trying your luck on a position of CEO or as an entry-level worker, the person hiring you will make a great deal in out of the clothes you are wearing. Appropriate clothing is one of the first things that an interviewer will see of you and if you are off with it, you do not even have to talk much anymore. For a woman the dress to impress factor is way more complicated than for a man. A man can always choose to wear a business suit and tie, while there is not quite such an equivalent for the female clothing market. To give you a good idea about what women’s clothing articles you should wear when going for an job interview, here a short list: blazers, closed-toed shoes, dress pants, dress shirts, dress coats, women’s suits, skirts, hosiery and turtlenecks. All these clothing articles should be in solid colors and patterns. It is recommended to wear such colors as black, blue, navy, gray, brown and white/beige for shirts and tops. Colors and patterns need to be subtle and should not give the interviewer the wrong idea about you. Bright red attire might suggest that you are wilder or need to be the center of the room and this is not one of the traits that an employer wants to see in their employees. For women it is also very important that they do not wear to sexy cloths. No deep cut shirts that are exposing too much of the chest area, as this could suggest sexual tendencies to the future employer. Going along with this point is the skirt lengths. Should you decide to wear a skirt to your interview, keep your skirt lengths long enough to reach the knees or surpass them. Anything shorter is seen as naïve or even worse. Especially important when wearing a skirt to an interview is to wear tights and similar hosiery. Hosiery should be plain and without patterns. The colors should be complementing your business attire but not be too contrasting. When getting ready for your interview, besides the apparel you are wearing, the way you look is just as important. How about your hair? Make sure your hair is neat and do not style for a party. When putting on make-up, tread lightly. Do not use provocative colors such as way to red lips, especially in pale skin types. Make-up needs to be subtle and needs to emphasize your business attire. Most women do like their fingernails adorned with nail polish. When getting ready for an interview, it is important that your fingernails are neat and clean and when using nail polish, the color needs to complement your attire. Bright red is one of the colors that is not recommended to be used. Rather a clear, golden or darker subtle red color is more appropriate. It is also important to remember that anything that distracts from you as a person while being in an interview can take away the chance to land the job. Whenever you are going for an important interview it is recommended to have friends, family or maybe even colleagues check out your attire. Often times you might be wearing something that is not appropriate or does not fit right and in the excitement and rush of getting ready you might have not even realized it. Also, keep in mind that you need to feel comfortable in what you wear to be confident and secure when talking to the interviewer. The Definition of Writing Styles Depends on Who is Defining Them (writing styles) While researching this topic, you may have found many different answers to what are the different types of writing styles. No two answers were the same. They range anywhere from your personal way of writing that is your writing style to formal and informal. Many people feel the best answer to what writing styles are the those will be outlined below in this article. You can decide for yourself if this definition suits your. The term creative writing covers a range of writing areas. Poetry, fiction books, short stories, and screenplays are considered creative writings. Any writing in which is not strictly non-fiction would be classified as such. Journalism and news reporting are forms of Expository writing. The purpose is to focus on one topic and inform the reader by provided the facts. These writings can be seen in the forms of travel brochures, professional journal, business reports, and new paper articles. Descriptive writing is what gives you the mental pictures of what we have read. It uses a lot of adjective and adverbs to describe things. When descriptive writing is very good you can close your eyes and know exactly what the author is saying. The kind that makes you taste what the characters and see what they are seeing. Analytical Writing is a writing that focuses on a topic and then verifies the purpose of it. It is often taught school age children through out the years because it is something they will use in their life. Book reports, conference papers, thesis, essays, and dissertations are all academic writing. It is created using a third person point of view and deductive reasoning supported by facts. Its purpose is to show a clear understanding of a subject by presenting information. Technical Writing is used in owner manuals, how to guides, magazine articles, and design specs just to name a few. Its purpose is to take complicated technical information and turn it into something the intended audience can understand. Technical writing usually deals with electronics of all sorts, chemistry, robotics, and finance. Any kind of writing that has to do with business matters is considered business writing. It is concise and to the point. Your intended audience wants to know what happen and why, but with minimal detail in between. An active voice is necessary in business writing. It keeps people focused and shows that you are in control of situations. Correspondence is the writing of memos, letters, or emails between people. It is a message that is sent between two people or groups of people. To provide facts and statistic and having the ability to influence your readers with your words is persuasive writing. This is used for products ads, political campaigns, or any kind of promotion. It is not necessary to prove why something is else is wrong or bad you just need to prove why your promoting is better. Narrative writing is use to tell a story or list of events that have already happen, might have happened, or could happen in the future. These writings may include novels, poetry, short stories, or a number of other things. A lot of times many of these styles are meshed together in our writing. Business writing and technical writings are often one in the same as are academic writing and analytical writing. With the overlapping of the styles it hard to define one writing style from another, you can guess it is all a matter of the point of view you are looking at it from and your opinion. |