What are the best practices for using ConcurrentHashMap in Java?

What are the best practices for using ConcurrentHashMap in Java?

When using ConcurrentHashMap, consider the following best practices: 1. Use it for high concurrency scenarios. 2. Prefer using the compute methods for updates. 3. Avoid using it as a replacement for synchronized collections.

Can you explain why compute methods are preferred?

Compute methods like computeIfAbsent and computeIfPresent are atomic and help avoid race conditions, making them safer for concurrent modifications.

What about performance? Are there any tips?

Yes, to enhance performance, minimize the number of locks by using bulk operations and avoid unnecessary synchronization.

Are there any common pitfalls to avoid?

Common pitfalls include assuming that iteration is thread-safe and not handling null values properly, which can lead to unexpected behavior.