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.. _aio-pika: https://github.com/mosquito/aio-pika
Patterns and helpers
++++++++++++++++++++
.. note:: Available since `aio-pika>=1.7.0`
`aio-pika`_ includes some useful patterns for creating distributed systems.
.. _patterns-worker:
Master/Worker
~~~~~~~~~~~~~
Helper which implements Master/Worker pattern.
This applicable for balancing tasks between multiple workers.
The master creates tasks:
.. literalinclude:: examples/master.py
:language: python
Worker code:
.. literalinclude:: examples/worker.py
:language: python
The one or multiple workers executes tasks.
.. _patterns-rpc:
RPC
~~~
Helper which implements Remote Procedure Call pattern.
This applicable for balancing tasks between multiple workers.
The caller creates tasks and awaiting results:
.. literalinclude:: examples/rpc-caller.py
:language: python
One or multiple callees executing tasks:
.. literalinclude:: examples/rpc-callee.py
:language: python
Extending
~~~~~~~~~
Both patterns serialization behaviour might be changed by inheritance and
redefinition of methods :func:`aio_pika.patterns.base.serialize`
and :func:`aio_pika.patterns.base.deserialize`.
Following examples demonstrates it:
.. literalinclude:: examples/extend-patterns.py
:language: python
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