Real User Monitoring vs Synthetic Performance Testing

Developers should use RUM to understand how their applications perform for real users across different devices, locations, and network conditions meets developers should use synthetic performance testing to catch performance issues early in the development lifecycle, such as during continuous integration/continuous deployment (ci/cd) pipelines, to prevent costly post-release fixes. Here's our take.

Real User Monitoring

Nice Pick

Developers should use RUM to understand how their applications perform for real users across different devices, locations, and network conditions

Pros

• It's essential for identifying performance bottlenecks, debugging production issues, and optimizing user experience based on actual usage patterns
• Related to: application-performance-monitoring, synthetic-monitoring

Cons

• Specific tradeoffs depend on your use case

Synthetic Performance Testing

Developers should use synthetic performance testing to catch performance issues early in the development lifecycle, such as during continuous integration/continuous deployment (CI/CD) pipelines, to prevent costly post-release fixes

Pros

• It is particularly valuable for monitoring critical user journeys, like e-commerce checkouts or login flows, and for testing applications under peak load scenarios or from specific geographic regions to ensure global performance consistency
• Related to: load-testing, apm-application-performance-monitoring

Cons

• Specific tradeoffs depend on your use case

The Verdict

These tools serve different purposes. Real User Monitoring is a tool while Synthetic Performance Testing is a methodology. We picked Real User Monitoring based on overall popularity, but your choice depends on what you're building.

The Bottom Line

Real User Monitoring wins

Based on overall popularity. Real User Monitoring is more widely used, but Synthetic Performance Testing excels in its own space.