Can you explain what Live Lock is and how it differs from Dead Lock?

Live Lock and Dead Lock are synchronization problems in multithreaded programming, but they differ in their nature.

Dead Lock — a situation where two or more threads permanently block each other, waiting for resources held by each other. As a result, no thread can continue working.

Live Lock — a situation where threads do not block but constantly react to each other, changing their state, which prevents them from making progress. Unlike Dead Lock, threads are active but do not perform useful work.

Example for understanding:

• Dead Lock: thread A holds resource 1 and waits for resource 2, which is occupied by thread B, and thread B waits for resource 1.
• Live Lock: two threads try to yield access to a resource to each other, constantly changing their state, but neither gains access.

In Go, Live Lock can occur, for example, if goroutines constantly try to yield to each other without blocking but also without making progress.