What is Performance Testing?
Performance Testing evaluates how a system behaves under different load conditions. It ensures that the application is reliable, responsive, and stable even when accessed by multiple users simultaneously.
Objectives of Performance Testing
- Measure system response time and throughput
- Identify bottlenecks in the system
- Ensure system scalability and reliability
Advantages
- Detects performance issues before release
- Improves customer satisfaction
- Ensures application stability under heavy load
Limitations
- Requires specialized tools and environments
- Can be time and resource intensive
- Complex setup for simulating real-world scenarios
Performance Testing Process
- Identify performance requirements
- Plan and design test scenarios
- Set up performance testing environment
- Execute load, stress, or scalability tests
- Analyze results and optimize application
️ Example
Example: An e-commerce website is tested to handle 10,000 concurrent users during a festival sale without downtime or performance issues.
️ Tools for Performance Testing
- Apache JMeter
- LoadRunner
- Gatling
- BlazeMeter
Best Practices
- Define clear performance benchmarks
- Use real-world scenarios for testing
- Automate performance testing where possible
- Monitor system metrics continuously
