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Web Hosting - Domain Name Changes and How They Affect You
New domain names are registered all the time, and ones previously registered expired. Sometimes that's the result of simple neglect. The owner of the name chose not to renew his or her ownership, so the name became available for someone else to use. In rare cases, a highly original mind managed to think of a new one. In the other common scenarios, someone chose to just let it go or sell it.
When you choose to change your domain name, there are actually two separate steps involved: releasing the old name, and adopting the new one. But, just as the postal system can have difficulty forwarding your letters when you change your personal name, changing your domain name brings certain difficulties.
One of the most prominent is the fact that any name change requires a change to thousands of DNS Servers around the globe. DNS (Domain Name System) is the set of software/hardware components that allows domain names to map to IP addresses. IP addresses are what are actually used 'under the covers' when one computer communicates with another.
Note that there isn't always a 1:1 correspondence between a name and an IP address. One IP address can serve multiple domain names and one domain name can have multiple IP addresses. For the sake of simplicity, we'll stick to the common case here.
DNS servers around the world maintain internal databases that match the name to an IP address. Not all servers have all pairs of names/addresses. A series of complex routines allows a request to be forwarded when the particular DNS server doesn't have a needed record. When you acquire a domain name that used to be associated with a given IP address, the odds of you acquiring the same IP address are extremely low.
In the unlikely case, for example, that you acquired the domain name yahoo.com, you would almost certainly not get the IP address that was matched with it (unless you bought the Yahoo! company). So, as a result of the change, the name/IP address pair is no longer what it was.
A similar circumstance exists when you retain your IP address, but want to change the domain name associated with it. In either case, the pairing has changed.
The catch is this: when the change takes place, those DNS databases are not all updated instantaneously around the world.
Even apart from the limited speed with which computers and networks operate, (and neglecting the human factor if/when the change is made manually to more than one server) the reason is something called caching.
In order to communicate efficiently, DNS servers are designed to assume that changes will be relatively rare. Just as with the postal system, you don't move your address or change your name every minute. Since that's true, in general, the name/IP address pair is cached. A cache is a set of stored information that is reused so that fresh information doesn't have to be communicated with every request for a web page or data.
A chain of DNS servers pass requests to the last known address. There is usually more than one system between your computer and the server you want to communicate with. Most of the time, that's your current name/address. When you change the name, that pair is no longer valid. In order to propagate the new name/address pair (so the terminology goes), that cache has to be refreshed.
Something similar happens when you establish an entirely new name. That name is first associated with an IP address and that pair has to be communicated to DNS servers around the world in order for you to be able to reach any one of them at random.
But DNS servers don't do that until they are requested to do so by your action of asking for information from a remote server. Because of that, but chiefly because of caching, it can take quite a while for the new pair to become known around the Internet. Caches can expire and get refreshed in a few minutes or a few hours. It varies.
That time can be as short as an hour or less, if the path between your computer and the web server is very simple and only one DNS server needs to be updated. Or, it can take up to 48 hours or more. Though the 'official' range is often given by registrars as 24-48 hours, the average is closer to about six hours. But that's an average. The actual time in any given case can (and does) vary widely.
In the meantime, a number of effects can occur. The most obvious is that, since the name/IP address pair can't be resolved properly, you don't reach the server you want. Your browser points to the old one (in the rare case it's still accessible by that name and address), or it simply reports there's no such name at that address.
So, when registering a new name or buying an old one, you should establish the site, but not advertise it for at least a couple of days. Better to wait to get visitors than to turn them off by being 'not at home' when they call.
Non copyright music downloads Non Copyright Music Downloads Offer Growing Options for Music Collections Non copyright music downloads are growing in popularity and providing much needed exposure to many 'starving artists'. The truth of the matter is that many artists are turning to open source applications or creative commons licensing which allows them to provide their music to others while still retaining their ownership. It's a great idea that has actually worked quite well within the software community and is just now taking hold within the music industry. The idea of services such as this that offer non copyright music downloads to consumers for their listening pleasure is a relatively new concept that is beginning to take hold throughout the online music community. It is important to remember that while there are a few names that are recognizable and reputable in this particular industry there are also those that have less scruples than others and are more than willing to take advantage of music lovers for the fees they will pay and/or a credit card number and personal information. It is always wise to be aware of the information you are sharing online and to take great pains not to give information to companies that aren't absolutely secure and reputable. There are so many 'back room' websites that offer you unlimited music downloads for a yearly or lifetime subscription fee that sounds to good to be true. The problem is that many of these have a very limited selection of non copyright music downloads or quality music and only offer substandard and non mainstream music that no one has ever heard of or they offer music sharing that is not at all legal and puts you in a precarious legal position. The law holds you accountable for what you do rather than what you understand you are doing more often than not. Thinking you have non copyright music downloads is not the same as actually having them. So don't believe everything you see when it comes to defining legal and illegal music downloads. Find companies that have good reputations and don't go with cheaper services that are suspect and vague in their description of services. Non copyright music downloads or open source music is still relatively new. There are a lot of questions that leave a lot of room for misunderstandings, confusion, and consumers being taken advantage of. Educate yourself before subscribing to any of these services. Check out several do searches online to see if there is any negative feedback about these companies, read the feedback and see what people have to say. You can't believe all the negative you read but if many people complain about selection or quality it's quite likely that they don't have a good selection or great quality. Know what you want and find a service that will give it to you in non copyright music downloads. Another thing to know about non copyright music downloads is that many of these services are not offered free. There are expenses involved for the company, the hosting, website advertising, the fees they pay the artist, and any other number of fees-also keep in mind that this is a very time consuming business for them and they have overhead costs in addition to wanting to get paid as well. Remember this is a business for them. You should not expect less of open source music than you expect from other music that you pay a subscription in order to download. Non copyright music downloads are definitely the wave of the future and the technology had better be able to keep up with the demands of consumers. Do and Don’ts of the Interview Process No one likes job interviews. From the moment you schedule the interview you are under a microscope. Your potential employers waiting for you to make the move that make you stand out or eliminates you from being a candidate for the job. This necessary dance that just about everyone, has to go through can be mastered. Learn the key things to do to become a high-ranking candidate for a job. First of all, before you go to the interview be prepared. Having copies of your resume and pens are only half the battle. Where exactly is the office located? Do not leave the location or the interview site up to chance. The only way to know exactly where your interview is and how much travel time you should allow is to go there. Even if you are interviewing out of town, find out how long the drive is to the interview. Nothing disqualifies you, in most cases, faster than being late for your interview. Before you are sitting across from the interviewer, accumulate some knowledge about the company. Knowing about the position is not enough. Everyone that interviews will have read the advertisement for the position. You need to be armed with information about the company. Have they won any service awards? Are they ranked as one of the best companies in America to work for? Find out and impress the interviewer. Another way to impress the interviewer is to have intelligent, thoughtful questions to ask. Ask about productivity, benefits or training procedures. Show that you have done your homework and are truly extend about the position. Be attentive and bring the interviewer as much information as possible about yourself. If you have a portfolio or reference letters, be sure you take them to the interview. Also be prepared with complete work history and information as well as past residency information. Be ready to answer a few probing questions. Why do you want the job you have applied for? What makes this a good time for a job or career change? Have some intelligent answers for these questions. Interviews will know if you are nervous. No matter how badly you need the job, do not appear desperate. Show that you believe in yourself and are confident about your ability to do the job. Speak in terms of when you get the job opposed to it. While this is a bold move it is a way to reinforce the idea of you being chosen for the job. This is a trick for both you and the interviewer. No matter how true this may be, never tell the interviewer that you “really need a job”. If this is what you tell the interviewer they will think that you are willing to take any job. Also, never talk negatively about your current boss or co-workers. Give as objective view as possible if you are asked about your current job relationship. Inquire about the next interviewing steps. This will not only show the interviewer that you are interested in the position it will also give you some time to prepare if you are called for the next interviewing step. Be sure to keep a notebook in your car so you can jot down notes immediately after you leave the interview. This is the best way to keep track of important facts about the position. In a day or so, mail a thank you card to your interviewer. This could be the added interest they are waiting to see from you in order to eliminate the other candidates. |