Welcome to recaro-nao.com
|
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.
Web Hosting - When Changing Web Hosts Nearly everyone will want to change to a new web host at some point. It may involve just changing out old hardware for new. It usually means finding an entirely new web hosting company. When faced with that decision there are a number of issues to be considered. Swapping hardware and/or software is a fairly straightforward decision. There are two possible scenarios. Either you maintain your own hardware and software at a facility managed by others, or you are considering upgrading to newer (usually more expensive) systems maintained by others. In either case, it's simply a matter of estimating the cost and the short-term impact versus the long-term benefits. If the system(s) you currently use are short on capacity, sooner or later you'll be sufficiently motivated to make the change. Either the hardware will become unreliable or loaded to the point you'll be forced to migrate, or your needs will expand enough to justify the effort and expense of moving. Similar considerations apply to the scenario in which you rely on the web hosting company for everything, and want to find someone else to rely on. Regrettably, that's a very common situation. Many web hosting companies provide systems and staff that sooner or later fall below an acceptable level. Most people make the decision to change based on emotion. That's not entirely bad. Emotions incent you to take action. But you need to keep a cool head, too, in order to calculate your long-range self-interest. Bearing some minor inconveniences from time to time is usually worth the trade off. When it begins to affect your site to the point you're losing visitors, it's time to make a change. To get a more objective handle on when that point is reached, reach for some numbers. Maintain, or get from the hosting company, a factual report about availability and current usage. If the server is down so much, or so heavily loaded, that it drives your visitors away, it's time to take action. There are other less easily quantifiable but equally important factors, as well. You will at some point need to communicate with one or more persons who help maintain your site. Even if you do all your own server, database and web site maintenance, someone behind the scenes is helping to keep things running smoothly. That's called 'infrastructure'. If the road you drive on has potholes, it's not enough that you can fix your own car. In terms of network bandwidth and availability, server capacity, disk space, security and a whole array of other aspects, the web hosting company has to have competent people who care (and are allowed) to do the job well. When the company's people fall down - because of incompetence, lack of resources or absence of a culture of excellence - or for any other reason - your web site suffers. This issue more than any other is what drives people to seek another web hosting company. Even if you choose well at the outset, things can change. Management changes, staff changes and companies are taken over by other companies. Sometimes, it isn't simply a matter of swapping out an unreliable piece of hardware or software. When it's time to swap out people, you look for the same aspect: doing the job required. Taking Advantage of a Free Service to Find Great Grocery Deals Are you interested in saving money on your groceries? Are your grocery bills getting you down? With the rising cost of food staples, it is becoming more important than ever before to choose carefully and shop smart. Fortunately, if you are willing to do the research and homework, you can find many great deals that can save you hundreds on your monthly grocery bill. Here is a free service that can help you find great grocery deals. This new grocery service is known as mygrocerydeals.com. Here is a brief run-down of what this new system can do for you. What Can MyGroceryDeals.com Do For You? There are many web-based services, and while many offer fine free services, very few can help you save actual money on your grocery deals. It is a good thing that mygrocerydeals.com came along, then. What can this web-based service do for you (and your grocery food bill?). Mygrocerydeals.com is directed at those savvy food shoppers that rifle through the weekly circular ads on a regular basis, and those that spend their long Sunday mornings clipping coupons with a cup of coffee in hand. If you are tired of this dull ritual, fear not—mygrocerdeals.com is here to save you from this routine. Discovering the Scope of MyGroceryDeals.com Basically, this fine web-based service saves you the trouble of having to rifle through all that newsprint and coupon circulars. This web-based service is basically a giant database of local grocery store offers and specials. By using this easy web-based service, you can build your very own grocery list and even build shopping lists for the store that you prefer to shop at. You can also choose to browse the various deals and steals at your local grocery stores. Furthermore, you can even get information about the products you are shopping for. With this easy to use web-based service, you can even check out the nutrition database, food allergy alerts and other pertinent information. You can create your own virtual shopping list and then print it out for when you are ready to hit the store. Even better, you can download special deals and coupons for foods on your shopping list. How You Can Use MyGroceryDeals.com If you are ready to use this free web-based service, you can begin by registering a new account. You will need to enable pop-ups in order to get the full scope of the website. Most links will show up in a pop-up, so be sure that you check your Internet preferences before you begin. The website allows you to compile grocery lists and even save lists for future reference. You can try the 'try us now' link in order to browse your local store and select your closest location. You can even browse the stores in your surrounding areas. Before you submit your registration, note that there is a small check box asking you whether you would like to receive a free copy of Taste of Home Magazine. Make sure that the box is checked or unchecked accordingly. Get a Taste of the Printable Coupons One of the best things about using the mygrocerdeals.com web-based service is that you can gain easy access to a large collection of printable coupons. Make certain that your printer is ready to go before you log on. Also, be forewarned that in order to print out many of these coupons, you will need to install a browser plug-in from Coupon.com if you don't already have this driver installed on your computer. If you have already printed coupons from the World Wide Web before, chances are that you already have this plug-in installed. You can test this by attempting to print out new coupons. |