How to make RabbitMQ worker listening continuously ?

Question

I am implementing rabbitMQ with more than 3 workers processing. To test it, I need to execute worker file each time, but I don't want that.

I want my worker script to listen all request continuously without manually executing worker file. Many people suggested CRON but I don't want because if previous run hasn't finished then overlap can cause serious issues.

Is there any way to run my worker script continuously in background?

Answer 1

What you actually want is to run your worker as a daemon. The basic idea is to run your task in a loop without any user interaction and write the output into a log file.

This is a complex task and depending on the programming language of your choice there might be a library that will handle that for you.

• PHP: PHP-Daemon
• Ruby: Ruby-Daemons
• Python: Stackoverflow answer
• Java: Apache Commons daemon

Another useful approach specific to RabbitMQ is to run your worker code as command line program with the RabbitMQ-cli-consumer. This approach will work for any programming language with cli support. Especially for script languages with stability issues like PHP this will be the favorable way to go.