Performance Testing

Definition:
Performance testing determines how fast the System Performs operations under a particular workload in software engineering

Performance testing is just a theoretical concept whereas load and stress testing are practically used in software testing process.

Load testing on application enables developers to isolate bottlenecks in any component of the infrastructure.
Example: Measures application ability to sustain concurrent users while maintaining adequate response time.

Components of Load Testing
Load Balancers: They take incoming load of the client requests and distribute the load across multiple server resources.
Load Generator: It is a machine which serves as a host for running Vusers.