JMeter TOP 8 Performance Testing ( Advance Level) Part 1

                                                         

1. Identifying Bottlenecks using APM

Use tools like AppDynamics, Dynatrace to monitor real-time metrics (CPU, Memory, Thread count, DB queries) to pinpoint slow components.

2. Correlation in JMeter/LoadRunner

Dynamic values (like session IDs) are extracted using Regular Expressions or correlation functions to maintain session integrity.

3. Parameterization

Replacing hardcoded values (like usernames) with variables to simulate real user behavior.

4. Endurance Testing

Long-duration test to identify memory leaks, database connection issues, and degradation.

5. Workload Modeling

Based on usage data: peak hours, transaction mix, user patterns. Determines how virtual users behave.

6. Monolithic vs Microservices Testing

Monolithic: Single app, end-to-end testing.

Microservices: Multiple APIs, requires individual and integrated testing with mocking.

7. Role of APM Tools

Provides end-to-end traceability, identifies root causes, tracks SLAs, provides dashboards.

8. Garbage Collection Impact

Frequent