Web Applications Performance Bottlenecks

Application architecture is formed by several components and there could be dozens of bad performance symptoms in each component. Being a good performance tester, one must know the list of performance symptoms on each tier to diagnose bottlenecks effectively.
Below is the detailed list of symptoms of each of the web applications 3-tier component.

1. Network Performance Bottlenecks
2. Web Server Performance Bottlenecks
3. Application Server Performance Bottlenecks
4. Database Server Performance Bottlenecks
5. Client Side Performance Bottlenecks
6. Third Party Services Performance Issues