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Web Hosting - Managing Disk Space
Few things are less exciting than managing the disk space that always seems to be in too short a supply. But few things are more important to the health and well being of your site.
The most obvious aspect of managing disk space is the need to have enough. If you have only a few dozen web pages, that's not an issue. But as the amount of information (web pages, database content and more) grows, the quantity of free space goes down.
That's important for two reasons.
All permanent information on a computer is stored on hard drives. Temporary information is often stored in memory only. The two components are completely separate, though they are sometimes confused with one another. As the amount of free space on the hard drive decreases several effects occur.
Here's one way to picture them...
Imagine you had a table with a certain area and you lay out playing cards on the table. At first, you lay them out in order, the 2 at the side of the 3, then 4, and so on. But then you pick up one or two cards from the middle and discard them. Then you add some more cards. Pretty soon things look pretty random.
Now cover the cards with a big opaque sheet of paper.
You want the cards to appear in order when displayed to someone. A special robot could be designed to always pick up the cards from underneath the sheet in order. Or, it could slide a hole in the sheet over the cards to display them in the correct order (2, 3, 4, ...), no matter what order they are really in. That's similar to how the operating system always shows you information in a sensible way, even though it's actually stored randomly.
Why should you care?
Real files are stored in pieces scattered around the drive wherever there is space for them. The more free space there is, the quicker the operating system can find a place to store a new piece. That means, if you delete the junk you no longer need (and free up more space) the system actually runs quicker. It helps create space you might need, and allows the operating system to store files for you faster.
But there's a second effect.
As you delete old files or change them, the pieces get more and more scattered. It takes the 'robot' longer and longer to fetch or display the 'cards' in order. Existing files are fetched and put together 'on the fly' (say, when you request a graphical page or a list of names). But, it takes longer to put together the web page when there are more scattered pieces.
So, the other aspect of managing disk space is to keep the pieces of the files more or less in order. A utility that does that is called a 'de-fragger' or de-fragmentation program. You can request that a system administrator run it, or if you have the authority, you can run it yourself. That keeps the 'cards' in order and allows for quicker access to them.
So, managing disk space involves chiefly three things: (1) keeping enough space to store what you need to store, and also (2) keeping enough free space to make new file storage quick and (3) making old file retrieval fast by keeping things orderly.
When only a few files are involved the benefit isn't worth the effort. But as the number and size of the files grow, to thousands of files or several gigabytes of data, the effect becomes more noticeable. Keeping things organized then makes a significant difference in performance.
Much of this can be automated using utilities. Some will delete files in a certain folder older than a certain date. A de-fragger can be set to run automatically during times of light usage, or quietly in the background at all times. Discuss the options with your system administrator and help him or her do the job better by keeping your house in order. You'll benefit by having a better performing web site.
Is Christian Publishing the Easy Road to the World of Writing Success? (Christian publishing) Any community with a special interest will pay for products that cater to that special interest. If that community is of significant size, you can bet that there will be products galore geared to them. There is money to be made where there is a need for a product. The Christian community is one such group that has a desire for a very specific product. They are interested in products that explain their faith and expand their knowledge of what is less understood within that faith. They also seek encouragement in what is already agreed upon. Because of all of these needs, there is certainly a market to be entered into within the Christian publishing network. The question is, since the group is exclusive, does that mean that there are too few writers for the consumers? Is it easier to get published when you’re not competing with the best of the secular authors? Those are difficult questions to answer with any certainty, but there are some topics to explore within that subject. Degree of Expertise In one genre of Christian publishing one qualification is essential. To write with expertise on subjects of faith, it is necessary to have the correct education. A seminary degree at the very least is required for convincing publications. The publishers do not accept authoritative writing from those without the proper education. When it comes to education, separate Christian denominations will expect degrees endorsed from those specific denominations. You may have expected that a Christian would need to write for the Christian community, but the requirements can be much more stringent. Just as a pastor or preacher must have the proper education to teach a congregation, a writer on subjects of theology or other topics from the Bible must also have the credentials to back up his claims. While it is not possible for every writer to obtain the correct degree for authoritative writing, there are other kinds of writing that will easier to achieve within Christian publishing. Experiential Knowledge A huge portion of Christian publishing is made up of personal stories. A Christian has unique experiences related to his faith. People who seek encouragement will buy books that relate to their own circumstances. A typical human problem is grief. If a Christian can effectively write about their grief from a perspective of faith then those writings will be helpful to other struggling Christians. Other important subjects include doubt, blessings and prayer. A lay Christian can back up their experiences and observations with scripture and therefore be much more relevant in their writing to the Christian community. If the writer’s material is not sufficient to fill a book, there are other outlets within Christian publishing for those who are able to inform and encourage fellow Christians. Magazines and church bulletins often publish poetry and short stories for the building up of believers. The Bottom Line Christian publishing may not be necessarily easier to do than secular publishing. If your heart is in the ministry to other Christians however, it may be the best field for you to attempt writing for. Christian publishing is not a ‘first step’ to enter into the publishing world. Most publishers are only looking for sincere and relevant publications. They will avoid writings done only for the money and will favor those with the honest goal of furthering the message of the Christian faith. Specific communities are looking for products geared to their lifestyles, but the best candidates for creating those products are those who have talent invested in that community. Entering into the Christian publishing world will be a similar task to entering into the scientific publishing world. It will take dedication and work. The writer will come out with a deeper understanding and faith of his own. 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. |