How can you isolate performance issues in a specific module affecting an application?

Isolating performance issues in a specific module can be effectively achieved by deploying the problematic module as a separate application. This approach allows for focused analysis and testing of the module without interference from other parts of the application. By running the module independently, you can closely monitor its performance metrics, debug any issues, and identify bottlenecks that may not be apparent when it operates within a larger system.

This separation creates a controlled environment where adjustments can be made, and performance can be optimized without risking instability in the entire application. Once the performance issues are identified and resolved in this isolated setup, the module can be integrated back into the main application with confidence.

In contrast, options such as rewriting the entire application are impractical and inefficient, as they require significant time and resources without necessarily addressing the specific issue. Removing the module could eliminate the problem temporarily but does not solve the underlying performance issue. Combining the module with others to distribute the load may exacerbate the problem rather than isolate it, making it harder to pinpoint the source of the performance degradation.