When you are using Laravel queues, you might bump into the situation where you want to prevent overlapping of jobs that handles sensitive information. This could be to provide data integrity of important information such as the user’s wallet balance. Let’s say the user’s wallet balance is being updated by a job called App\Jobs\UpdateUserWallet and this job will get invoked each time the user does a transaction from his/her account. How can you make sure that the wallet balance of the user won’t ...