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Interviewer : How to locate and avoid deadlocks? This question came up in two consecutive interviews!
Goldman Sachs Second-Round Interview: How to Locate and Avoid Deadlocks in Java
“During my Goldman second-round interview, I was asked a classic Java concurrency question: How do you locate and avoid deadlocks? Surprisingly, the same question appeared in two consecutive interviews.”
If you’ve prepared for backend interviews at companies like EY, Phonepe, Google, Amazon, Microsoft, or Oracle, you’ve probably noticed one thing:
Java concurrency is almost always tested.
Among all concurrency topics, deadlocks remain one of the most frequently asked interview questions because they combine operating system fundamentals, Java synchronization, multithreading, debugging, and production troubleshooting.
But deadlocks aren’t just interview material.
They are one of the most frustrating production issues because they:
- Freeze business transactions
- Block critical threads
- Cause APIs to stop responding
- Are difficult to reproduce
- Usually appear only under heavy concurrent traffic
