Mastering the Producer-Consumer Pattern in Java LLD: The Restaurant Kitchen
The Producer-Consumer pattern is a staple in Java Machine Coding interviews because it tests your real-world concurrency control without breaking thread safety. Mastering it proves you can handle asynchronous thread handoffs without burning CPU cycles or risking deadlocks.
The Mistake Most Candidates Make
Writing custom lock logic using wait() and notifyAll() inside synchronized blocks, introducing subtle race conditions and spurious wakeup bugs.
Busy-waiting inside while(true) loops with non-thread-safe collections, thrashing the CPU while repeatedly checking queue sizes.
