We can’t say enough about these two tools when trying to diagnose an unusually slow site. Once the obvious issues have been examined (large images, bad scripts, slow database responses, damaged tables…) you should always run Firebug and YSlow sessions within your browser for further diagnoses.

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“Whatsmydns.net is an online service that allows you to instantly perform a DNS lookup to check a hostnames current IP Address and other DNS information against a selection of random name servers around the world. This is especially useful to check the current state of DNS propagation after making changes to your domains zones.”

WebsiteForensics.com says: AWESOME TOOL!

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There are so many web-hosting companies to choose from and so many technical flavors. How do you know which one you want to sign up with? This is not an easy decision, as the server choice will impact development, deployment, security and many more aspects of web hosting. Do you really want to export databases, redo a CMS installation from the ground up and move your work from hosting company A to hosting company B after six months of bad service?

Not all companies are equal, not all services are the same and before anybody go ahead with a hosting provider, and one should do as much research as possible before hand. What are the best Linux Hosting Plans, why should you use a VPS (virtual private server), what is dedicated hosting, who offers the best email hosting?

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Tools

• Project IP – Detailed information about you and your computer. In addition to your IP address, Project IP lists just about everything a webserver can find out about your computer. Enjoy!
• Future pagerank – This tool will query Google’s various data centers to check for any changes in PageRank values for a given URL. Usually all data centers will output the same, but if queried during an update, you might get a glimpse of any upcoming changes in your chosen URL’s PageRank value.
• Page Strength – The tool is designed to satisfy the curiosity of webmasters, surfers and web marketing professionals seeking a better metric to quickly assess a site/page’s relative importance and visibility.
• Web page analyzer – The script calculates the size of individual elements and sums up each type of web page component. Based on these page characteristics the script then offers advice on how to improve page load time. Read the rest of this entry »

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Apache

• Apache server – The Apache HTTP Server Project is an effort to develop and maintain an open-source HTTP server for modern operating systems including UNIX and Windows NT.
• Mod rewrite guide – This module provides a rule-based rewriting engine to rewrite requested URLs on the fly.
• .htaccess tutorial from Apache v2.0 – .htaccess files (or “distributed configuration files”) provide a way to make configuration changes on a per-directory basis.
• Apache Software foundation – The Apache Software Foundation provides support for the Apache community of open-source software projects.
• URL Rewriting – URL rewriting of this type will work ONLY if you are hosted with Apache Server.
• Disable Image Hotlinking – URL rewriting of this type will work ONLY if you are hosted with Apache Server. Create an .htaccess file to disable hotlinking graphics.

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