23.8.2. Modern Alternatives

Try these first

1. 1.

   What does ConcurrentHashMap allow regarding thread access?

   Hint

   Think about threading and data structures.

2. 2.

   In what scenario is CopyOnWriteArrayList most useful?

   Hint

   Consider where changes in data happen infrequently.

3. 3.

   What is the main benefit of using ConcurrentHashMap?

   • Single-thread access
   • Reduced contention
   • More expensive locks

   Hint

   Think about how it handles access differently than traditional maps.

4. 4.

   True or False: CopyOnWriteArrayList is ideal for high write scenarios.

   • True
   • False

   Hint

   Consider the operations involved in frequent modifications.

5. 5.

   Design a multi-threaded application using ConcurrentHashMap to tally votes in an election, detailing how you will handle thread safety and contention.

   Hint

   Focus on how to manage concurrent updates effectively.

6. 6.

   In a streaming application, implement a data processing pipeline with BlockingQueue for buffering incoming data chunks between producers and consumers. Describe the roles of each component.

   Hint

   Identify the benefits of blocking in your implementation.