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 Dynamic URLs vs. Static URLs

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The Issue at Hand
Websites that utilize databases which can insert content into a webpage by way of a dynamic script like PHP or JavaScript are increasingly popular. This type of site is considered dynamic. Many websites choose dynamic content over static content. This is because if a website has thousands of products or pages, writing or updating each static by hand is a monumental task.

There are two types of URLs: dynamic and static. A dynamic URL is a page address that results from the search of a database-driven web site or the URL of a web site that runs a script. In contrast to static URLs, in which the contents of the web page stay the same unless the changes are hard-coded into the HTML, dynamic URLs are generated from specific queries to a site's database. The dynamic page is basically only a template in which to display the results of the database query. Instead of changing information in the HTML code, the data is changed in the database.

But there is a risk when using dynamic URLs: search engines don't like them. For those at most risk of losing search engine positioning due to dynamic URLs are e-commerce stores, forums, sites utilizing content management systems and blogs like Mambo or WordPress, or any other database-driven website. Many times the URL that is generated for the content in a dynamic site looks something like this:

   http://www.somesites.com/forums/thread.php?threadid=12345&sort=date

A static URL on the other hand, is a URL that doesn't change, and doesn't have variable strings. It looks like this:

   http://www.somesites.com/forums/the-challenges-of-dynamic-urls.htm

Static URLs are typically ranked better in search engine results pages, and they are indexed more quickly than dynamic URLs, if dynamic URLs get indexed at all. Static URLs are also easier for the end-user to view and understand what the page is about. If a user sees a URL in a search engine query that matches the title and description, they are more likely to click on that URL than one that doesn't make sense to them.

A search engine wants to only list pages its index that are unique. Search engines decide to combat this issue by cutting off the URLs after a specific number of variable strings (e.g.: ? & =).

For example, let's look at three URLs:

   http://www.somesites.com/forums/thread.php?threadid=12345&sort=date
   http://www.somesites.com/forums/thread.php?threadid=67890&sort=date
   http://www.somesites.com/forums/thread.php?threadid=13579&sort=date

All three of these URLs point to three different pages. But if the search engine purges the information after the first offending character, the question mark (?), now all three pages look the same:

   http://www.somesites.com/forums/thread.php
   http://www.somesites.com/forums/thread.php
   http://www.somesites.com/forums/thread.php

Now, you don't have unique pages, and consequently, the duplicate URLs won't be indexed.

Another issue is that dynamic pages generally do not have any keywords in the URL. It is very important to have keyword rich URLs. Highly relevant keywords should appear in the domain name or the page URL. This became clear in a recent study on how the top three search engines, Google, Yahoo, and MSN, rank websites.

The study involved taking hundreds of highly competitive keyword queries, like travel, cars, and computer software, and comparing factors involving the top ten results. The statistics show that of those top ten, Google has 40-50% of those with the keyword either in the URL or the domain; Yahoo shows 60%; and MSN has an astonishing 85%! What that means is that to these search engines, having your keywords in your URL or domain name could mean the difference between a top ten ranking, and a ranking far down in the results pages.

The Solution
So what can you do about this difficult problem? You certainly don't want to have to go back and recode every single dynamic URL into a static URL. This would be too much work for any website owner.

If you are hosted on a Linux server, then you will want to make the most of the Apache Mod Rewrite Rule, which is gives you the ability to inconspicuously redirect one URL to another, without the user's (or a search engine's) knowledge. You will need to have this module installed in Apache; for more information, you can view the documentation for this module here. This module saves you from having to rewrite your static URLs manually.

How does this module work? When a request comes in to a server for the new static URL, the Apache module redirects the URL internally to the old, dynamic URL, while still looking like the new static URL. The web server compares the URL requested by the client with the search pattern in the individual rules.

For example, when someone requests this URL:
   http://www.somesites.com/forums/the-challenges-of-dynamic-urls.html

The server looks for and compares this static-looking URL to what information is listed in the .htaccess file, such as:

   RewriteEngine on
   RewriteRule thread-threadid-(.*)\.htm$ thread.php?threadid=$1

It then converts the static URL to the old dynamic URL that looks like this, with no one the wiser:
   http://www.somesites.com/forums/thread.php?threadid=12345

You now have a URL that only will rank better in the search engines, but your end-users can definitely understand by glancing at the URL what the page will be about, while allowing Apache's Mod Rewrite Rule to handle to conversion for you, and still keeping the dynamic URL.

If you are not particularly technical, you may not wish to attempt to figure out the complex Mod Rewrite code and how to use it, or you simply may not have the time to embark upon a new learning curve. Therefore, it would be extremely beneficial to have something to do it for you. This URL Rewriting Tool can definitely help you. What this tool does is implement the Mod Rewrite Rule in your .htaccess file to secretly convert a URL to another, such as with dynamic and static ones.

With the URL Rewriting Tool, you can opt to rewrite single pages or entire directories. Simply enter the URL into the box, press submit, and copy and paste the generated code into your .htaccess file on the root of your website. You must remember to place any additional rewrite commands in your .htaccess file for each dynamic URL you want Apache to rewrite. Now, you can give out the static URL links on your website without having to alter all of your dynamic URLs manually because you are letting the Mod Rewrite Rule do the conversion for you, without JavaScript, cloaking, or any sneaky tactics.

Another thing you must remember to do is to change all of your links in your website to the static URLs in order to avoid penalties by search engines due to having duplicate URLs. You could even add your dynamic URLs to your Robots Exclusion Standard File (robots.txt) to keep the search engines from spidering the duplicate URLs. Regardless of your methods, after using the URL Rewrite Tool, you should ideally have no links pointing to any of your old dynamic URLs.

You have multiple reasons to utilize static URLs in your website whenever possible. When it's not possible, and you need to keep your database-driven content as those old dynamic URLs, you can still give end-users and search engine a static URL to navigate, and all the while, they are still your dynamic URLs in disguise. When a search engine engineer was asked if this method was considered "cloaking", he responded that it indeed was not, and that in fact, search engines prefer you do it this way. The URL Rewrite Tool not only saves you time and energy by helping you use static URLs by converting them transparently to your dynamic URLs, but it will also save your rankings in the search engines.



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