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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.
Clean Up your Digital Profile and Land that Job Whether you are looking for a job after getting fired or you are looking for a job other than the one you are working at currently, many steps in that process are the same. You need to get your résumé up to date and conform to newest standards, you need to get your wardrobe together and most of all you need to be prepared to go for the interview. But did you know that in a fast paced society with all the high technology gadgets, employers and companies appreciate a good digital profile? When it is time to land a new job it is time for you to clean up your digital profile. For those of you who might not know what a digital profile is, let’s reminisce about digital profiles for just a second here. A digital profile is any and all information about you that can be found online. It can be anything from your own homepage, over articles and answers that you have posted on the Internet to videos and pictures of you. Anything that is somehow connected to you and your name and can be found through Internet search engines such as Google, Yahoo and other crawlers belongs to your digital profile or e-portfolio. Believe it or not, many employers have started to check out your digital profile online by doing a little research on the Internet and finding any information about you. If it is on the Internet it is public information and therefore not illegal. Information on the Internet does not necessarily have to be positive. What if one of your friends posted some stories or pictures/movies about you on the Internet? Employers might see that and think that you are not fir for the tasks that are asked form you by the new job and might just plain throw your nice résumé into the trash before they ever have a chance to meet you in person. Therefore before going onto your next job-hunt, clean up your digital profile. Steps you can take to clean up your e-profile are many and one of the easiest ones is a regular search with different Internet search engines about things that are related to your name. See what comes up and try to clean it up. If there are pictures or movies posted on such pages as u-tube about you, try to get friends or the owners of the page to take them down or at least take your name of the page in such a way that a search engine cannot find this information when somebody is searching for your name. A very important positive step in cleaning up your digital profile is to create your own positive statements and information on the Internet, such as online résumé, Personal web pages or a personal development plan (PDP). If the amount of positive information, academic achievements, and plans for the future are greater than any negative amount of information they can find, the light shed on you is of good nature and your chances are greater to land that job than when they only find negative information for the reasons that you never knew about a digital profile. Should you still be new to all of this and you are not quite as well versed on the Internet, there are places that can help you. Many Universities and development centers offer help and tools just for this kind of situation. Public libraries also offer you free time on the Internet as well as other resources in connection with the job-hunt and digital profiles. So before you actually send out your résumé, make sure that you checked online for any information that might harm you. Writing Tips for all Styles of Writing (writing tips) Most writing tips you will come across are usually geared towards certain writing topics. You can find fiction writing tips, short story tips, and poetry tips among the different ones. These tips are suitable for any style writer. Setting aside a time to write: You have to choose which is best for you. Some writers prefer having a set schedule. They schedule their days as if they are working a 9-5 job. Or some write in the fly and impulsively. Neither way is right or wrong. It is just a matter of choosing the one that fits your lifestyle and writing techniques. Know how to prevent writers block. It often helps keep your mind fresh and writers block at bay when you write about more that one topic at a time. This can keep the creative juices moving and the brain actively thinking about what the next lines are going to be. Writing about topics you know about or have a desire to know about also help the words continue to flow onto your canvas. Writing daily keeps your imagination open and always running. If the words start to become difficult to create, take a break and change the scenery before they are lost. It is easier to add to ideas already in your head than it is to try and start from scratch again. Another great writing tip is to keep a notebook and pen with you at all times. How frustrating it is when you have this fantastic idea but you forget what it is before you can find a pen and paper to write it down. Or you have a dream and wake up thinking that a great story could come of it and then in a flash it is gone. Set daily goals for yourself. Whether you are on a schedule or an impulsive writer setting daily goals will make sure you reach your intended outcome. Daily goals are usually much easier to obtain than weekly goals. If you do not have an education in writing but love to write it will help your career to learn writing basics. Understanding the different writing techniques and styles or basic grammar are imperative parts in a writers career. There are low cost and even free online course that will lead you in the right direction. Another helpful writing tip is to have a proofreader. This can be a family member, a colleague, or a friend. Every writer proofreads there on work over and over but a proofreader will often pick up things that we miss. The writer of a story knows what they want to say; therefore it is to miss an out of place word because you often read what you know it should say instead of what it really says. A proofreader will read the actual words and let you know whether they make sense or need changed. The research you do for an article needs to be accurate and update. A topic with information can be detrimental to your career. It shows lack of responsibility to find correct information. It shows apathetic writing abilities and reflects poorly on your character. The most important tip that you should know is to know what you are trying to achieve with your writing and knowing what its purpose it. By knowing this you will be able to keep focus on the point of your writing. Whether you are writing a story and try to keep reader enthralled with your characters or a late breaking news article by remember the purpose of your story will help you stay focused and on the right track. |