Semaphore: Limited Access
While a Lock allows only ONE holder, a Semaphore allows up to N:
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LearnStep 1 of 4
What is a Semaphore?
Learning Objectives
- •Use Semaphore to limit concurrency
- •Implement rate limiting
- •Know Semaphore vs Lock
Lesson Outline
LearnStep 1/4
What is a Semaphore?
python
Semaphore vs Lock
| Lock | Semaphore |
|---|---|
| Max 1 holder | Max N holders |
| Binary (yes/no) | Counting (available slots) |
| Mutual exclusion | Resource limiting |