I have ROR application and 1 delay_job process ran using rake job:work. ROR application add Job in multiple queue.
Lets say we have queue 1 and queue 2.
My Question is task in queue 1 and task in queue 2 will be executed concurrently?
Currently in my application after running rake job:work process only 1 thread is spawn which executes queue1 task and then queue2 task.
If i have to execute in parallel, i have to run two rake task of job:work.
Is it correct behavior or it can be run concurrently in 1 rake task of job:work. And what is worker in Delay Job. Is delay Job interchangeably used with worker
Thanks
Priyanka
No, one worker cannot run two jobs concurrently, you need more than one process running for that.
In the example you are describing, you are starting a worker that is running in the foreground (rake job:work), but what you could do instead, is to start them as background workers, by running bin/delayed_job instead (script/delayed_job for earlier versions). That command has multiple options that you can use to specify how you want delayed_job to function.
One of the options is -n or --number_of_workers=workers. That means you can start two workers by running the following command:
bundle exec bin/delayed_job --number_of_workers=2 start
It is also possible to dedicate certain workers to only run jobs from a specific queue, or only high priority jobs.