Job chaining and batching in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is job chaining in Laravel?

Job chaining allows you to run multiple jobs in a specific order, where each job starts only after the previous one finishes successfully.

beginner

How do you create a job chain in Laravel?

You use the chain() method on the Bus facade, passing an array of jobs to run in sequence.

intermediate

What is job batching in Laravel?

Job batching lets you dispatch a group of jobs together and then track their progress or completion as a single batch.

intermediate

How can you detect when all jobs in a batch have finished?

Laravel provides batch callbacks like then() to run code after all jobs in the batch complete successfully.

beginner

What happens if a job in a chain fails?

If a job in a chain fails, the following jobs in the chain will not run, stopping the sequence.

Which method is used to start a job chain in Laravel?

A batch()

B chain()

C dispatchChain()

D queueChain()

The chain() method is used to create a sequence of jobs that run one after another.

What does Laravel's job batching allow you to do?

A Group jobs and track their overall progress

B Run jobs one by one without tracking

C Run jobs only on the main thread

D Automatically retry failed jobs forever

Job batching groups jobs and lets you monitor their progress or completion as a batch.

If a job in a chain fails, what happens next?

A The entire chain stops running

B The chain continues with the next job

C The failed job is skipped and retried later

D The batch is canceled

A failure in a job chain stops the chain from continuing to the next jobs.

Which callback runs after all jobs in a batch finish successfully?

A catch()

B finally()

C then()

D done()

The then() callback runs after all batch jobs complete successfully.

How do you dispatch a batch of jobs in Laravel?

A Batch::dispatch([...])

B Job::batch([...])->run()

C Queue::chain([...])->dispatch()

D Bus::batch([...])->dispatch()

You use Bus::batch([...])->dispatch() to dispatch a batch of jobs.

Explain how job chaining works in Laravel and why it might be useful.

Think about tasks that need to happen one after another.

Describe job batching in Laravel and how you can track when all jobs finish.

Imagine sending many jobs at once and waiting for all to complete.