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The 0.8 release changes the protocol fairly substantially. This version hasn't been released yet. The new protocol is documented here. A number of clients are in progress, and we will update when they are complete.
Python
Pure Python implementation with full protocol support. Consumer and Producer implementations included, GZIP and Snappy compression supported.
Maintainer: David Arthur
License: Apache v.2.0
https://github.com/mumrah/kafka-python
0.1-0.7.x
Java
Maintained with the main code base.
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https://github.com/dastra/log4php-kafka
Python
We have a wealth of python clients!
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Maintainer: David Arthur
License: Apache v.2.0
https://github.com/mumrah/kafka-python/tree/0.7
Also:
https://github.com/dsully/pykafka
Maintainer:: Dan Sulley, LinkedIn
License: Apache 2.0
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