midConcurrency
What is a Barrier (CyclicBarrier)?
Updated Apr 28, 2026
Short answer
A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point before continuing.
Deep explanation
Mid-level concurrency focuses on coordination patterns. The goal is to move beyond simple 'locks' and use high-level abstractions provided by the language or framework (like Thread Pools) to ensure scalability.
Real-world example
A database connection pool limiting the number of simultaneous connections to 20.
Common mistakes
- Using a heavy Mutex for a scenario where 99% of operations are Reads.
Follow-up questions
- What is the 'Condition' variable in a lock?