Architecture and components of LoadRunner

The architecture of LoadRunner can be broadly divided into two parts: the client-side components and the server-side components.

Client-side components include:

1. LoadRunner Controller: It is used to manage and execute load testing scenarios. The Controller is used to create and manage test scenarios, start and stop tests, and analyze test results.

2. LoadRunner VuGen (Virtual User Generator): It is used to create, edit, and maintain load testing scripts. VuGen allows you to record and replay user actions, and to modify scripts as needed.

3. LoadRunner Analysis: It is used to analyze the performance results obtained from load testing. The Analysis component provides graphs, charts, and other visualizations to help you understand how your application performed during the load test.

Server-side components include:

1. LoadRunner Load Generators: These are the machines that generate the load on the application under test. Load generators can be located on the same network as the application, or in the cloud.

2. LoadRunner Monitors: These are used to monitor the performance of the application and the infrastructure during the load test. LoadRunner supports a wide range of monitors, including system monitors, network monitors, and database monitors.

Overall, the LoadRunner components work together to provide a comprehensive solution for load testing your application and ensuring its performance under heavy loads. The client-side components allow you to design and execute load tests, while the server-side components allow you to generate the load and monitor the application's performance.