عرض عملي: مجمّع خيوط يُسقط العمل بصمت

خطوة بخطوة

1. Start a pool with 2 threads, a queue of 2, and DiscardPolicy.
2. Submit 10 slow tasks; count completions: only 4 finish, with no error.
3. Switch to AbortPolicy; catch RejectedExecutionException and see the rejected count.
4. Planned mistake: use submit with a task that throws and never call get(); the failure vanishes. Fix: wrap the task body in try/catch with logging, or inspect the futures.
5. Decide a policy: caller-runs for backpressure or abort plus metric; never silent discard for business work.