Question 1

How to handle errors in grpool jobs?

Accepted Answer

grpool lacks built-in error handling. You must wrap job functions to capture errors, such as using closures that send errors to a separate channel, adding extra code for reliability.

Question 2

Can I change the pool size dynamically in grpool?

Accepted Answer

No, grpool uses a fixed pool size set during NewPool initialization. For dynamic scaling, you need a custom solution or a different library with runtime adjustments.

Question 3

grpool vs sync.WaitGroup for concurrency in Go?

Accepted Answer

grpool provides a fixed worker pool for controlled goroutine usage, while sync.WaitGroup only synchronizes goroutine completion. Choose grpool for resource management; use sync.WaitGroup for simple task groups without pooling.

Question 4

How to implement job retries with grpool?

Accepted Answer

grpool doesn't support retries natively. Implement retry logic inside job functions, like loops with backoff, which complicates error handling and increases code complexity.

Question 5

Is grpool suitable for long-running tasks?

Accepted Answer

Yes, workers are reused, but blocking jobs can starve others due to the fixed pool. Ensure tasks are non-blocking or use timeouts to maintain throughput.

Question 6

What happens if the job queue is full in grpool?

Accepted Answer

Submitting to pool.JobQueue blocks until space is available, as it's a buffered channel. This can cause backpressure, potentially slowing down job producers in high-load scenarios.

Question 7

How to cancel jobs in grpool?

Accepted Answer

grpool has no cancellation support. Use context.Context within job functions to implement cancellation, but manage it externally, which adds overhead and complexity.

grpool

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