How would you go about identifying and resolving a memory leak in a software application?

How To Approach: Associate

  1. Highlight relevant experience locating memory leaks.
  2. Walk through a specific example of resolving a memory leak.
  3. Detail the tools and techniques used.
  4. Share the outcome of your efforts.

Sample Response: Associate

As a Software Developer at TechSolutions, I've had a hands-on experience dealing with memory leaks. In one of our applications, we were seeing progressive slowdowns and random crashes. Using a profiler, I conducted a deep investigation and discovered that our memory usage was continually increasing over time, indicating a memory leak. I found it difficult to directly identify the specific cause because our application was rich in features.

After separating and testing different parts of the application, I discovered that one component was not releasing memory after it finished its operation, it was a recursive function within a feature that was not deallocating the memory after each run. To visualize memory usage patterns better, I used Visual Studio Diagnostic Tools and .NET Memory Profiler. After locating the problematic component, we modified the code to ensure memory release and re-tested the application, and the memory leak was resolved. This dramatically improved the application's stability and performance.