Load Test Design Workflow
Design a load test that simulates realistic user behavior with ramp-up, steady state, and ramp-down phases.
Objective
Create a realistic load test that accurately predicts production performance.
Environment
- A load testing tool
- A staging environment that mirrors production capacity
- Real or synthetic user behavior data
Steps
1. Analyze user patterns
Study production analytics to identify the most common user flows.
Expected state: A list of key user journeys with frequency weights is created.
2. Design test script
Write a load test script that simulates the identified user patterns.
Expected state: A load test script is created with realistic user behavior.
3. Set ramp profile
Configure ramp-up, steady state, and ramp-down phases to avoid sudden load spikes.
Expected state: The load profile has gradual ramp-up and ramp-down.
4. Run baseline test
Execute the load test at normal expected traffic levels and record metrics.
Expected state: Baseline performance metrics are recorded.
5. Run peak test
Increase load to expected peak traffic and identify bottlenecks.
Expected state: Peak load performance metrics and bottlenecks are identified.
Decision points
Use production or staging?
- Staging for safety
- Production shadow traffic for realism
Use staging for controlled testing; use shadow traffic in production for the most realistic results.
Expected outcome
A realistic load test is designed and run, identifying performance limits under expected traffic.
Verification
Compare load test results against performance SLOs; confirm the system handles expected peak traffic.
Cleanup
Clean up any test data created during the load test.
Realistic tests predict real problems
A load test that does not match real user behavior is useless. Model the test after actual usage patterns.
Implementation Notes
This workflow provides a structured approach to ensure consistent results across team members and environments.
Common Pitfalls
Skipping verification steps or rushing through the process can lead to incomplete results. Always follow each step in order and verify before proceeding.
Quick Reference
# Execute the workflow steps as documented above
echo "Workflow completed successfully"