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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 meanáthe 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.
Finishing a Masterpiece and Getting it on the Shelves (how to get a book published) Writing a book is a monumental task in itself. The process is long, drawn out and grueling. Even if you thoroughly enjoy writing and writing on the same subject for an extended period of time, you will no doubt be exhausted by the writing of a book. Getting that book published, however, will take even more time and effort than producing the thing in the first place. Are you thinking about writing a book? Have you already written one and now are just wondering how to get a book published? If you are, read on. Here are a few tips on how to get from the starting line to triumphantly crossing the finish line. Writing that Book When starting out writing your book, before you are ready to consider how to get a book published, you may already feel daunted. To write a successful book you need to start out with some original thought. You probably have plenty of originality, but you may have trouble getting your ideas into a coherent flow of information that will be digestible by the general public. The first step is to create a book skeleton. You need to organize your thoughts into a progression of chapters. If your book will be non-fiction, start with a table of contents. Write chapter headings and sub-headings. You will automatically know that you?ll need an introductory chapter, but you should probably leave the content of your introduction for the last step. Organize your chapters so that they build upon one another. The more headings that you can brainstorm to begin with, the easier it will be to fill in your book with a series of short articles that flow into one another. If your writing will be fiction, you will need more of a storyboard. You will need to create cause and effect as well as character sketches. To make your story coherent your characters will need events to react to. Their reactions should become predictable as your readers get into the story. You may need to create some situations for your characters just for the purpose of introducing their traits to the reader. These are very general guidelines about how to begin constructing your book. The actual process will be much more involved as you move closer to finding out how to get a book published. Even after you are finished with the bulk of the content, your goal is still a ways off into the future. Getting to Print The next step in how to get a book published is finding a publisher. There are resources at your local library that will let you know who will be the best candidate for publishing the kind of writing that you do. After a series of queries and correspondence with the potential publishers you may get an invitation to send your manuscript. Then the work begins. A publisher is very experienced in finding books that are marketable. He knows what it will take to get your book to sell. Don?t be offended when his editors tears your writing apart. If they are doing that, you can enjoy the fact that you are on the road to a published book. Expect to enter into a close relationship of compromise and change with the editor as you rework and rework what you have already so painstakingly written. When you are finished you will have a readable and clean and correct manuscript ready for print. The road to getting a book published is a long one, but well worth the effort. Trust yourself, and trust the publisher to create a beautiful masterpiece. Don?t be discouraged if several publishers are not interested in your book. You may have to just keep the first few for yourself, and then again, they may eventually get accepted. Good luck and enjoy the process.
Web Hosting - Sharing A Server ľ Things To Think About You can often get a substantial discount off web hosting fees by sharing a server with other sites. Or, you may have multiple sites of your own on the same system. But, just as sharing a house can have benefits and drawbacks, so too with a server. The first consideration is availability. Shared servers get re-booted more often than stand alone systems. That can happen for multiple reasons. Another site's software may produce a problem or make a change that requires a re-boot. While that's less common on Unix-based systems than on Windows, it still happens. Be prepared for more scheduled and unplanned outages when you share a server. Load is the next, and more obvious, issue. A single pickup truck can only haul so much weight. If the truck is already half-loaded with someone else's rocks, it will not haul yours as easily. Most websites are fairly static. A reader hits a page, then spends some time skimming it before loading another. During that time, the server has capacity to satisfy other requests without affecting you. All the shared resources - CPU, memory, disks, network and other components - can easily handle multiple users (up to a point). But all servers have inherent capacity limitations. The component that processes software instructions (the CPU) can only do so much. Most large servers will have more than one (some as many as 16), but there are still limits to what they can do. The more requests they receive, the busier they are. At a certain point, your software request (such as accessing a website page) has to wait a bit. Memory on a server functions in a similar way. It's a shared resource on the server and there is only so much of it. As it gets used up, the system lets one process use some, then another, in turn. But sharing that resource causes delays. The more requests there are, the longer the delays. You may experience that as waiting for a page to appear in the browser or a file to download. Bottlenecks can appear in other places outside, but connected to, the server itself. Network components get shared among multiple users along with everything else. And, as with those others, the more requests there are (and the longer they tie them up) the longer the delays you notice. The only way to get an objective look at whether a server and the connected network have enough capacity is to measure and test. All systems are capable of reporting how much of what is being used. Most can compile that information into some form of statistical report. Reviewing that data allows for a rational assessment of how much capacity is being used and how much is still available. It also allows a knowledgeable person to make projections of how much more sharing is possible with what level of impact. Request that information and, if necessary, get help in interpreting it. Then you can make a cost-benefit decision based on fact.
The Business of Self-Publishing (self publishing) Self-publishing has become a common practice for many writers. Writers? reasons for self-publishing are varied, but it is commonly known that many writers want the accolades of having published work, no matter who publishes it. The freedom and business aspects of publishing work independently are desirable to many writers. A self-published writer is one who is in control of every aspect of their published work. The term self-publishing is defined as the publishing of books and other media by the authors of those works, instead of being established by third-party publishers. The advancement of technology has caused an increase in the self-publishers world, but it still only represents a small percentage of the publishing industry in terms of sales. The proliferation of media channels and web logging has contributed to the increase in self-publishers. The business of publishing books and other media independently is one that is unique and different from any other business. The most distinguishing characteristic of self-publishing is the absence of a traditional publisher. The author of the content takes on the role of the traditional publisher. The author is given editorial control of the content, arranging for printing, marketing the material, and distributing the material to consumers and retailers. The published books may be printed on demand with no inventory, which places a large amount of financial risk for the venue on the author?s shoulders. Many self-published authors end up subsidizing their work rather than making money from it. Digital printing technology has made it possible for the self-publishing concept to become mainstream in digital photo book printing. Self-publishers are able to get individually printed photo books from firms like Apple?s iPhoto, FotoInsight, Snapfish, and Printing-1. The motives for publishing work independently are varied, and there are numerous reasons for choosing to self-publish. One common reason is that the work of the author is not of interest to the commercial publisher, and otherwise not marketable. Some other common reasons for self publishing include an author?s preference to retain complete editorial control over content. Many writers are unwilling to compromise when it comes to the editing of their work, and some prefer to have their work presented ?as is.? Writers may also be denied publication because they are unknown and don?t have a substantial resume. Self-publishing may also be an alternative for writers who have written material on a popular topic but that is only of interest in a small geographic area. Topics that address an obscure topic in which few people are interested may also be denied publication by commercial publishers. Writers of controversial works may also choose to self-publish, as many traditional publishers refuse to work with controversial writings. There are also some authors choose self-publishing because they want a larger percentage return from retail sales. Whatever the reason for self-publishing, authors should know that there is extensive work required in publishing a book alone. Publishing alone involves a long list of tasks, which include prepublication and publication. Prepublication includes editing or obtaining editing for the manuscript, proofreading, establishing yourself as a legal retail business, and obtaining an ISBN ?Cataloging in Publication? number. The publication process involves formatting the manuscript, providing front matter and back matter, and providing cover art for the front and back covers and the spine of the book. Self-publishers must also obtain printing quotes, determine how the manuscript will be delivered to the printer, and pay for printing and delivery of finished books. Self-publishing is a business that many writers prefer to avoid, but for others it may be the only way to have the work printed and available to the public.