What is lock striping in ConcurrentHashMap?

What is lock striping in ConcurrentHashMap?

Lock striping is a technique used in ConcurrentHashMap to reduce contention by dividing the map into segments, each with its own lock.

How does it improve performance compared to traditional locking?

It allows multiple threads to access different segments simultaneously, reducing the chances of thread contention and improving throughput.

Can you explain how the locking mechanism works in detail?

Sure! In lock striping, the map is divided into several segments, each protected by a separate lock. When a thread wants to access a segment, it only locks that segment, allowing other threads to access different segments concurrently.

Are there any downsides to using lock striping?

Yes, while it reduces contention, it can lead to uneven load distribution if some segments are accessed more frequently than others.