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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 - Changing Web Hosts, Pitfalls and Planning At some point, nearly everyone finds it necessary to change web hosts. It may be just a migration to another server, or it may be changing web hosting companies entirely. Either way, the process is fraught with potential dangers. But there are ways to minimize the odds of problems and maximize your changes of a smooth migration. Plan, plan, plan. Make a very detailed list of everything that is on your current system. Review what is static and what changes frequently. Note any tailoring done to software and files. Be prepared to remake them if the systems aren't transferred properly or can't be restored. Keep careful track of all old and new names, IP addresses and other information needed to make the migration. Backup and Test Backup everything on your system yourself, whenever possible. Web hosting companies typically offer that as a service, but the staff and/or software are often less than par. Often backups appear to go well, but they're rarely tested by restoring to a spare server. When the time comes that they're needed, they sometimes don't work. Do a dry run, if you can. Restore the system to its new location and make any needed changes. If you have the host name and or IP address buried in files, make sure it gets changed. This is often true of databases. SQL Server on Windows, for example, picks up the host name during installation. Moving a single database, or even multiple ones, to a new server is straightforward using in-built utilities or commercial backup/restore software. But moving certain system-related information may require changing the host name stored inside the master database. Similar considerations apply to web servers and other components. Accept Some Downtime Be prepared for some downtime. Very few systems can be picked up, moved to another place, then brought online with zero downtime. Doing so is possible, in fact it's common. But in such scenarios high-powered professionals use state-of-the-art tools to make the transition seamless. Most staff at web hosting companies don't have the skills or the resources to pull it off. Prepare for Name Changes One aspect of moving to a new host can bedevil the most skilled professionals: changing domain names and or domain name/IP address combinations. When you type a URL into your browser, or click on one, that name is used because it's easier for people to remember. www.yahoo.com is a lot easier to remember than 209.131.36.158. Yet the name and or name/IP address combination can (and does) change. Still, specialized servers called DNS (Domain Name System) servers have to keep track of them. And there are a lot of them. There may be only two (rarely) or there may be a dozen or more DNS servers between your visitors' browsers/computers and your web host. Every system along the chain has to keep track of who is who. When a name/IP address changes, that pair has to be communicated to everyone along the chain, and that takes time. In the meantime, it's possible for one visitor to find you at the new place, while another will be pointing to the old one. Some amount of downtime will usually occur while everything gets back in sync. The Little Gotchas But even apart from name and IP address changes, there are a hundred little things that can, and often do, go wrong. That's not a disaster. It's just the normal hurdles that arise when changing something as complicated as a web site and the associated systems that underlie it. Gather Tools and Support Having an FTP program that you're familiar with will help facilitate the change. That will allow you to quickly move files from one place to the next to do your part to get the system ready to go or make repairs. Making the effort to get to know, and become friendly with, support staff at the new site can be a huge benefit. They may be more willing to address your problem before the dozen others they have to deal with at any given moment. Ok. On your mark. Get ready. Go. A Brief Guide to Writing Short Stories Effectively (writing short stories) A short story is basically a condensed version of a book or a rapidly progressing story. It has fewer characters than a novel and covers less amount of time. A short story generally is around 6,000 words or 6 pages. Do your research and organization before you begin to write. Outline your plot and the background. Make sure they make sense and flow together. Individually list the events of the story in the order in which they occur. Create your characters. Not just their name and role in the story, but as if they were real people with real lives. By creating more information for your characters you will get a sense of what they would do or how they would be and convey that to your writing. By creating an outline you will have a point of reference to look back upon and make sure you have included all vital points of the story. When writing a short story, you will need a captivating first paragraph. You have roughly 5 to 7 lines to appeal to your reads unlike novels that have the whole first chapter. This can actually make or break your story. You will need to grab their attention and keep it to make them want to read more. By starting the plot in the first few sentences it will make people want to know more. They will keep reading to find out who is involved and why. Keep the timeline of events brief. You are writing a short story and the timeline should match that. A timeline of a day, a week, or maybe even a month is generally the span a story should cover. Use character dialogue as a way to move the plot ahead. In a short story there is no time for general chitchat. By using the character dialogue you are deepening the plot as well as moving it along. Do not add unnecessary characters. By adding them you are wasting time one someone that is not linked to your story or its plot. Provide swift and precise details to keep the story moving. Elaborate descriptions of characters, plot, or surroundings will only waste your words and are not essential to making a good story. Use short words instead of phrases that mean the same thing. Building to the climax should be most of the story. Keep the conflicts building to the climax simple and easy to understand. You writing should be able to evoke the following emotions empathy, pain, hurt, despair, surprise, and desire just to name a few. Since the story is only a few pages long in its entirety it is necessary to maintain consistency through out the beginning, middle, and end. Make sure the dialog and plot complement each other. Keep the same point of view through out the story. You are almost ready to be published. After completing your own proofreading and editing, let someone else read it, a neighbor, your spouse, colleague, or a close friend. Even if they are not writers themselves they will be able to help point out any grammar errors. They will be able to tell you if something just doesn’t make sense. You are trying to fit a lot of captivating information in a small space; it is easy to leave something out. Something you may not catch because you know what is supposed to happen, while your will not. By following these simple rules, you will be able to write a short story that is captivating and effective. Writing short stories isn’t for everyone. Many writers like more detail and for short stories the space is just not available. |