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Web Hosting - The Internet and How It Works In one sense, detailing the statement in the title would require at least a book. In another sense, it can't be fully explained at all, since there's no central authority that designs or implements the highly distributed entity called The Internet. But the basics can certainly be outlined, simply and briefly. And it's in the interest of any novice web site owner to have some idea of how their tree fits into that gigantic forest, full of complex paths, that is called the Internet. The analogy to a forest is not far off. Every computer is a single plant, sometimes a little bush sometimes a mighty tree. A percentage, to be sure, are weeds we could do without. In networking terminology, the individual plants are called 'nodes' and each one has a domain name and IP address. Connecting those nodes are paths. The Internet, taken in total, is just the collection of all those plants and the pieces that allow for their interconnections - all the nodes and the paths between them. Servers and clients (desktop computers, laptops, PDAs, cell phones and more) make up the most visible parts of the Internet. They store information and programs that make the data accessible. But behind the scenes there are vitally important components - both hardware and software - that make the entire mesh possible and useful. Though there's no single central authority, database, or computer that creates the World Wide Web, it's nonetheless true that not all computers are equal. There is a hierarchy. That hierarchy starts with a tree with many branches: the domain system. Designators like .com, .net, .org, and so forth are familiar to everyone now. Those basic names are stored inside a relatively small number of specialized systems maintained by a few non-profit organizations. They form something called the TLD, the Top Level Domains. From there, company networks and others form what are called the Second Level Domains, such as Microsoft.com. That's further sub-divided into www.Microsoft.com which is, technically, a sub-domain but is sometimes mis-named 'a host' or a domain. A host is the name for one specific computer. That host name may or may not be, for example, 'www' and usually isn't. The domain is the name without the 'www' in front. Finally, at the bottom of the pyramid, are the individual hosts (usually servers) that provide actual information and the means to share it. Those hosts (along with other hardware and software that enable communication, such as routers) form a network. The set of all those networks taken together is the physical aspect of the Internet. There are less obvious aspects, too, that are essential. When you click on a URL (Uniform Resource Locator, such as http://www.microsoft.com) on a web page, your browser sends a request through the Internet to connect and get data. That request, and the data that is returned from the request, is divided up into packets (chunks of data wrapped in routing and control information). That's one of the reasons you will often see your web page getting painted on the screen one section at a time. When the packets take too long to get where they're supposed to go, that's a 'timeout'. Suppose you request a set of names that are stored in a database. Those names, let's suppose get stored in order. But the packets they get shoved into for delivery can arrive at your computer in any order. They're then reassembled and displayed. All those packets can be directed to the proper place because they're associated with a specified IP address, a numeric identifier that designates a host (a computer that 'hosts' data). But those numbers are hard to remember and work with, so names are layered on top, the so-called domain names we started out discussing. Imagine the postal system (the Internet). Each home (domain name) has an address (IP address). Those who live in them (programs) send and receive letters (packets). The letters contain news (database data, email messages, images) that's of interest to the residents. The Internet is very much the same.

Grocery Check ? Visit your Neighborhood Grocery Website for a Free Deal Page Are you looking for the best in grocery freebies? If so, get ready to reap the rewards of becoming a dedicated freebies hunter. It is said that there is no such thing as a free lunch, but if you are an avid freebie hunter, you will find that there is such a thing. Getting free groceries is one of the sweetest plumbs. Here are some hints and tips on how to get free groceries. Wouldn't it Be Great to Get Free Groceries? Yes! Of course, wouldn't we all want to get free groceries? Believe it or not, it is totally possible with a bit of creativity, ingenuity and planning. First, you must learn the art of creative couponing. What is creative couponing? It is exactly what it sounds like?you can use coupons to get some sweet grocery freebies. All you have to learn is how and where to use your grocery coupons. Here are some tips on using coupons to get free groceries. Watch Out for New Product Coupons New products are often heavily marketed with free or deeply discounted offers. Sign up for your grocery store's promotional newsletter or discount card program. This way, you will automatically receive discount coupons and freebie offers through the mail. Watch out for new products?these often come paired with new product coupons. You can often use new product coupons in order to match the sale price and get the time for free. You can use new product coupons to purchase food items, but they are often available for hygiene and beauty care products. Toothpaste, toothbrushes, shampoo and deodorant?all of these types of personal care products are constantly being revamped and marketed. Check the Clearance Aisle or Table at Your Local Grocery Store If you are an avid coupon clipper, there is a good chance that you already have a coupon stowed away for an item on the clearance aisle. Believe it or not, deeply discounted or marked down items are still eligible for coupons. Check out the clearance aisle in order to match your coupons with discounted items. There is a chance that you can get an item at a deeply discounted price, or yes, even for free. Seek Out Loss Leaders at Your Local Grocery Store What are loss leaders, and why can they be such good deals? Loss leaders are those items at your local grocery store that are currently selling at a loss. Loss leaders may vary from store to store, even when you are shopping at a chain store. Stores are often ready and willing to get rid of loss leaders. These items are often sold at a deeply discounted price. Be prepared to match these loss leaders with coupons in order to turn these products from cheap loss leaders to freebies. Don't Forget the Double Coupons Double coupons are the bread and butter of any motivated freebie hunter. Most grocery stores still honor double coupons, and some grocery stores even have promotional double coupons days. Search your store's ad circular and items for items that you can possible get for free by using double coupons. You will be amazed at how many grocery items you can get for free, or near-free, simply by taking advantage of double coupons. Don't Forget the Rebate! Rebate offers are another bread and butter strategy that you should employ if you are serious about finding free grocery items. Although you may not get an item for free right away, be patient and follow all the instructions offered by the manufacturer. After a few weeks, you should receive your rebate check in the mail. This is an easy way to make sure that you can get free grocery items.

Web Hosting - Bandwidth and Server Load, What's That? Two key performance metrics will impact every web site owner sooner or later: bandwidth and server load. Bandwidth is the amount of network capacity available, and the term actually covers two different aspects. 'Bandwidth' can mean the measure of network capacity for web traffic back and forth at a given time. Or, it sometimes is used to mean the amount that is allowed for some interval, such as one month. Both are important. As files are transferred, emails sent and received, and web pages accessed, network bandwidth is being used. If you want to send water through a pipe, you have to have a pipe. Those pipes can vary in size and the amount of water going through them at any time can also vary. Total monthly bandwidth is a cap that hosting companies place on sites in order to share fairly a limited resource. Companies monitor sites in order to keep one site from accidentally or deliberately consuming all the network capacity. Similar considerations apply to instantaneous bandwidth, though companies usually have such large network 'pipes' that it's much less common for heavy use by one user to be a problem. Server load is a more generic concept. It often refers, in more technical discussions, solely to CPU utilization. The CPU (central processing unit) is the component in a computer that processes instructions from programs, ordering memory to be used a certain way, moving files from one place to the next and more. Every function you perform consumes some CPU and its role is so central (hence the name) that it has come to be used as a synonym for the computer itself. People point to their case and say 'That is the CPU'. But, the computer actually has memory, disk drive(s) and several other features required in order to do its job. Server load refers, in more general circumstances, to the amount of use of each of those other components in total. Disk drives can be busy fetching files which they do in pieces, which are then assembled in memory and presented on the monitor, all controlled by instructions managed by the CPU. Memory capacity is limited. It's often the case that not all programs can use as much as they need at the same time. Special operating system routines control who gets how much, when and for how long, sharing the total 'pool' among competing processes. So, how 'loaded' the server is at any given time or over time is a matter of how heavily used any one, or all, of these components are. Why should you care? Because every web site owner will want to understand why a server becomes slow or unresponsive, and be able to optimize their use of it. When you share a server with other sites, which is extremely common, the traffic other sites receive creates load on the server that can affect your site. There's a limited amount you can do to influence that situation. But if you're aware of it, you can request the company move you to a less heavily loaded server. Or, if the other site (which you generally have no visibility to) is misbehaving, it's possible to get them moved or banned. But when you have a dedicated server, you have much more control over load issues. You can optimize your own site's HTML pages and programs, tune a database and carry out other activities that maximize throughput. Your users will see that as quicker page accesses and a more enjoyable user experience.