Blocking Call

Definitions

1. A function call that stops the current thread or execution path from doing anything else until the operation completes. Blocking calls are simple to reason about, but in high-concurrency or event-loop systems they can destroy throughput if used in the wrong place.

   In plain English: A call that makes execution wait until the operation finishes.

   Example: "The service looked asynchronous on paper, but one blocking call to the legacy SDK froze the worker thread pool under load."

Related Terms

• Async
• Parallelism
• io_uring
• Multi-Threading
• Parallel Processing
• Pool
• Sync
• Worker
• Buffer Management
• Buffer Size
• Concurrency Limit
• Concurrent Write