Describe a situation where you encountered a difficult bug and how you resolved it.

@leanna.hegmann 

When responding to a question about a difficult bug you encountered, it's important to provide a clear and concise explanation of the situation. Here are some steps you can follow to craft a good answer:

1. Describe the problem: Start by giving a brief overview of the bug you encountered. This can include details like what the bug was, how it manifested, and what impact it had on the system.
2. Explain your approach: Next, explain what steps you took to try and identify the root cause of the bug. This can include details like reviewing code, debugging, or using monitoring tools to identify patterns.
3. Share your thought process: As you worked to resolve the issue, explain your thought process and how you came to certain conclusions. This can help demonstrate your analytical and problem-solving skills.
4. Discuss the solution: Finally, describe how you were able to resolve the bug. This can include details like what changes you made to the code, how you tested the fix, and how you validated that the problem was resolved.

Here's an example answer:

"In a previous role, I was working on a web application that was experiencing intermittent crashes. The crashes were happening randomly and we were having a hard time reproducing the issue. After some investigation, I found that the crashes were happening when the application was under heavy load.

To solve the issue, I first looked at the server logs to see if there were any clues there. I also reviewed the code to see if there were any obvious performance bottlenecks. I then used a performance profiling tool to identify parts of the code that were taking a long time to execute.

After some analysis, I found that there was a memory leak in one of the third-party libraries we were using. This was causing the application to crash when it ran out of memory under heavy load. To fix the issue, I worked with the library vendor to identify and fix the memory leak. We then updated the library in our application and ran load tests to verify that the problem was resolved."