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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.
Web Hosting - DNS, How The Internet Keeps Track of Names The way computers communicate is, in a way, very similar to something very familiar: the postal system that delivers letters and packages. Here's how... The Internet is just what the name suggests, a large inter-connected set of networks. But those networks are pointless without the one part that forms what is called their 'end-nodes', otherwise known as computers. Those computers often need to share information because the people who use them want to share information. But, in a system where there are millions of separate computers, how can you enable them all to communicate? One very important feature of that solution is performed by something called DNS, the Domain Name System. Every part of a network that is going to send or receive information is assigned an IP address. That's a numeric identifier that uniquely specifies a particular 'node', such as a computer, a router that directs traffic or other component. They look like this: 209.131.36.158 But those numbers are more difficult for people to remember and work with. They also aren't very attractive from a marketing perspective. So, a naming system was layered on top of some of them, mostly the computers involved, though routers have names, too. But once you have a system that associates a unique IP address to a given name, you need some way of keeping track of all of them. That's carried out by several different pieces of the system: Name Registrars, DNS Servers and other components. The Name Registrars, overseen by IANA (Internet Assigned Numbers Authority) and other international bodies, provide and keep track of domain names. When you register with GoDaddy or any of a hundred other intermediate companies, ultimately that information makes its way into a number of specialized databases stored inside DNS Servers. A DNS Server is the hardware and/or software that tracks and forwards the IP Address/Domain Name pair from one place to the next. In many cases, there are a number of them between your browser and the remote computer you want to share information with. Suppose you request information from, say, Yahoo's site by clicking on a link on their site. DNS resolves (translates) the name of WHO IS making the request and OF WHOM, to addresses, then passes the request through the network to the requested IP address. The requested data is then passed back through the mesh of network components to your computer and displayed in your browser. Whether the communication is between a desktop computer and a server somewhere, or between one server and another, the process is essentially the same. DNS servers translate names into IP addresses and the requests for data are forwarded on. In some cases those DNS servers are part of a specialized network computer whose sole job is to do the translation and forwarding. In other cases the DNS software may reside on a server that also houses a database of general data, or stores email, or performs other functions. But however complicated the chain or the parts, the basic process is simple. Translate the name to an address, just as the postal system does. Whether international or local, your name is associated with an address, and the deliveries are made to the address, then forwarded to a particular name. Copyright lawyer support service Things a Copyright Lawyer Support Service Covers There are a few things every copyright lawyer support service should cover and those are summaries of any cases that are currently ongoing. This is a way that the client and the copyright lawyer stay up-to-date and should something new come up they know all about it. You would have to be going up for an issue you think has only been ruled one way until last week, however if you were you would know because of the copyright lawyer support service would be right in front of you. In this you would find the court case and number, the day it was held, who the judge was and the representing attorneys plus a summary of what the case was actually about. See how much information a copyright lawyer support service gives you? Now you will know if it is a new lawyer or someone that you are already familiar with, which is good especially if you will be going up against them. A client or a lawyer may find themselves wanting to look into the archives of the copyright lawyer support service if one is available. There are always a ton of gems from the past that can help someone out, maybe there is a copyright case that others forgot about. This is when a lawyer would be able to quote the case number and know exactly what it was about and could share it with the others. There aren’t just one or two different copyright lawyer support service, no you can find just about as many as there are lawyers. Think of every one that has been to a court hearing, or that was ruled outside of court for years, plus the many that haven’t even gone forward yet. An entire firm may have one or a copyright lawyer that is working on their own. It doesn’t matter exactly who it is, only that they are there to support YOU. Another copyright lawyer support service may actually be that they are there to help you fill out an application, whether it is online or in their office. If you have questions call their help line or your lawyer and find out what you should do. Or you may just want to use the service to copy your copyright right there in front of you and not have to make an appointment to do it. These days copyright lawyer support service is getting much better and faster, due to the ever growing demand of their own services. A service may also include a list of recommended copyright lawyers as well as all the summaries of current cases. What better way to find the lawyer you need than to get one that is highly praised in a document that provides you with so much information. A lawyer will learn exactly what they need to do to help you if they read a copyright lawyer support service very carefully. They’ll barely have to do much research once this is in front of them, all they have to do is read the page and find out how the lawyer did it. Due to the internet changing so frequently so does copyright laws and the best way to keep up is by following along with the copyright lawyer support service. Sure they are there to support you but they are also there to support the lawyers. It is a great service for everyone involved but it won’t help a single person if you aren’t aware that it is out there. |