We need advices, tips and information on how to scale and speed up our web portal. It will be a classfied listing type of potal. We want to be ready to handle large user base quickly. My programmer will work on the codes, but I need your expert advice on which areas to work on to speed up the website processing, speed up the database processing etc. What tools we may use to increase the load handling and load testing. In general, we want to work on the software side to scale the application. The hardware side, we will try cloud computing. Tell us what to do or not do when it comes to optimize web performance and ability to handle large user base. Imagine you worked on a web application that handles millions of users, give us information how to achieve that.