set expiration for .css .js .png .jpg .gif in asp.net

refer

http://forums.asp.net/t/1930640.aspx?expiration

Please note these things does not affect performance and loading so much. And hence I would first ask to concentrate on code and database

1. Have you written code cleanly

2. Are you destroying objects like DatatTable

3. Are you closing connections properly

4. Have you done indexing of database

5. Are you fetching only columns that are required and not all