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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 Writer?s Best Friend: The Job of an Editor (editing) Are you irritated by typos and spelling errors in professional documents? Are you able to help your friends make their writing error free? You may be a good candidate for editing. The world is incredibly dependent on writers and the craft of writing. It is how people communicate with each other most often. As the internet writing forms do not require people to hold to correct grammar, spelling or professional style, most writers are losing their capabilities to complete a professional document or book without help. Writers have always needed the help of editors. Even when there was strict attention to correct writing, editors could come and catch missed errors as well as mistakes in content. Editors are still needed today. Read on to find out more about what can be involved in a life of editing. Who are the Editors? Editors are those people with the ability to read a document and guide a writer to make it the best piece of writing that it can be. Editors work in newspapers, and magazines. They also work for publishing companies and in student resource centers. Editors generally have some education that leads them to the ability to help writers. They probably have a degree in language as well as training with style manuals. What is the Job? An editing job involves taking a piece of writing and conforming it to some particular set of standards. Style manuals are often the standard used. Different publications will choose a style and then ask the editors to make all of the writing that comes out to be consistent to that style. Editing is not only concerned with objective corrections like spelling and grammar though. An editor must also read for clarity, consistency and voice. If a writer claims one thing in one point of their piece and seems to contradict that point in another part, it is the editor?s job to catch the mistake and work with the writer to fix the inconsistency. If the writer is speaking authoritatively in the beginning of a piece and then becomes apologetic later, it is the editor?s job to make the tone match. Editors help with sentence construction, word choice and content order. How to Find Editing Jobs If any of the above job description sounds interesting and even exciting to you, you just may have found your ideal job calling. Before you start looking for editing jobs, you should test your skills. There are editing tests online. Feel free to use a style manual as well as your intuition as you correct the sentences and word choice in the different test questions. If you do not pass the test, you should probably spend a little more time reading a style manual and a basic grammar guide. Once you can ace an editing test, it?s time to look for a job. Be sure to include any experience you may have had. Include any editing of any kind you have ever done. Peer editing in school is appropriate experience to mention. Also be sure to list any style you are able to edit to. Examples are AP, Chicago, MLA, and so on. If you get an interview, be prepared to take another editing test, with the help of your manual. The test will likely be timed. Editing is a rewarding career. It involves helping writers to do their very best writing geared to their particular audience. While it can be stressful because of deadlines and workload, at the end of the day you will know that you have made the world of the written word a little cleaner and much more effective. Editors are an essential part of making the written word what it is today. Web Hosting - Email Issues When you build a web site, you often provide a means for users to communicate with you. One of the most common 'add-ons' to a web site is the addition of some kind of email access. Email is used to sign users up for newsletters, provide communication for administrative issues and a hundred other uses. But, as everyone sadly knows, email problems can occur. Virus infection is among the most common, though the situation is actually better today than in the past. Huge efforts, and some progress, has been made over the past 10 years to reduce the number and severity of virus attacks. Hackers haven't surrendered, far from it. But they're on the defensive like never before. Many of those viruses were (and are) spread through email, usually in the form of email attachments. That's the source of the now-common advice never to open an attachment from someone you don't know. Professionals will often extend that advice to suggest you never open an attachment that's unexpected, even if it's from someone you know. Well-meaning, but computer-challenged friends often accidentally forward virus infected emails. Spam has taken over the top spot for email annoyances. It's estimated by various different professional sources that 92-97% of all email sent today is spam. While the definition varies, spam is generally regarded as any unwanted commercial email sent by someone whom the recipient doesn't know or have a business relationship with. Spam clutters email inboxes, requires people to sift through to find valid messages, and often contains offensive messages in some form. But, it's a fact of life and isn't going away anytime soon. Even though laws are in place, thousands of spammers continue to risk fines or jail for the chance of making money from that small percentage who will open the unwanted email. Other forms of email problems are even more severe for many web site owners. When the mechanisms fail that they rely on to send and receive messages to and from their users, that's a problem. Dealing with those problems can range from sending an email or instant message to an administrator, to tracking down the right person to get your site removed from a blacklist. Email is the communications vehicle of choice for millions everyday. When the system burps, someone has to take time to do something about it. Often, that means relying on a person who is already overburdened with too many issues to resolve. So, besides pointing out some sad facts or complaining, what's the point? All of the above shows just one more area you should look at when selecting a web host or deciding whether to move to another. Just as with server or network administration, companies vary in their ability to deal with email-related issues. Some are responsive and super-competent. Others, are simply indifferent or worse. And many are in between. Email administration, like server maintenance or network management, is a professional specialty. Skill in one does not necessarily mean quality work in another. Finding a web hosting company and/or system that has few email problems, and solves them quickly when they occur, is an important task. Spend some time researching who provides superior support in email. You'll be happy you did. |