ASP.Net webapplication, keep in mind things for performance ,scalability

what are the things a developer should keep in mind or should take care when depeloping a web application.

web application e.g. social networking web app.

which are 开发者_StackOverflowthe things which must be implemented to get good performance and scalability.

please provide any article or blogs or suggestions for this kind of question if you have

-thanks in advance

Some things that popped up in my mind

• build in caching
• keep code clean and (unit) testable
• messure code coverage
• optimize database with indexs and check execution plans
• refactor every thing you build
• optimize front end loading time (minification, gzip, compressing)
• use source control

Deactivate Viewstate where you don't need it.

Most important: Make sure to hold the amount of roundtrips as small as possible. Understanding the Life-Cyclus of an asp.net website is most important for that matter.

http://www.startvbdotnet.com/aspsite/forms/formlifecycle.aspx