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Editorial Team
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Asked: 2026-06-04T05:00:43+00:00

I use Tornado as the web server. I write some daemons with Python, which

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I use Tornado as the web server. I write some daemons with Python, which run in the server hardware. Sometimes the web server needs to send some data to the daemon and receives some computed results. There are two working:
1. Asynchronous mode: the server sends some data to the daemons, and it doesn’t need the results soon. Can I use message queue to do it perfectly?
2. Synchronous mode: the server sends data to the daemons, and it will wait until it get the results. Should Iuse sockets?

So what’s the best way of communication between tornado and Python based daemon?

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1 Answer

  1. Editorial Team

    ZeroMQ can be used for this purpose. It has various sockets for different purposes and it’s fast enough to never be your bottleneck. For asynchronous you can use DEALER/ROUTER sockets and for strict synchronous mode you can use REQ/REP sockets.

    You can use the python binding for this –> http://www.zeromq.org/bindings:python.

    For the async mode you can try something like this from the zguide chapter 3 Router-to-dealer async routing :

    In your case, the “client” in the diagram will be your web server and your daemon will be the “worker”.

    zguide router-dealer-async-routing

    For synchronous you can try a simple request-reply broker or some variant to suit your need.

    a simple request-reply-broker

    The diagram above shows a strictly synchronous cycle of send/recv at the REQ/REP sockets. Read through the zguide link to understand how it works. They also have a python code snippet on the page.

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