Async · hard

40. Job Batching & Chaining

Coordinating complex background workflows.

Job chaining runs jobs sequentially, stopping the chain if one fails, using Bus::chain([...])->dispatch(). Job batching (Bus::batch([...])) runs jobs in parallel while tracking overall progress, exposing then(), catch(), and finally() callbacks for handling completion or failures. Batches are useful for bulk operations like processing thousands of blockchain transactions or sending mass notifications.

Check your understanding

1. What's the key difference between chaining and batching jobs?
No differenceChains run sequentially and stop on failure; batches run in parallel with progress trackingBatches always run firstChains require Redis
2. Which callback runs after all jobs in a batch succeed?
catch()then()finally()onFail()