Web Performance Tips

• Keep frequently access object in memory and it should be in application start event in global.asax file
• Dictionary collection is far better then list for fetching the records and last item will take considerable time compared to first item.
• User Page Caching extensively with duration of time 
• for a long running task use threading concept / task and Split up the task and execute each tasks in separate thread and join after the completion of thread
• Register the js/ css scripts in CDN
• Minify the html / scripts / css