All PatternsConcurrency
Worker Pool
Manages a pool of goroutines to process tasks concurrently.
Parallel processingRate limitingResource management
Understanding Worker Pool
The Worker Pool pattern uses a fixed number of goroutines (workers) to process jobs from a shared channel. It limits concurrency and provides efficient resource utilization.
How It Works
Jobs Channel
J1
J2
J3
J4
J5
Worker Pool
W1
W2
W3
Results
2
4
6
8
10
Jobs queued in channel
1
Job Queue
Jobs are queued for processing.
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Basic Implementation
Simple worker pool with job processing:
main.go
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Real-World Example: URL Fetcher
Concurrent HTTP fetching with controlled parallelism:
main.go
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