libmc: A fast and light-weight memcached client for C++/Python

[PAN Myautsai]

Dear all,

A few days ago, we just released a new memcached client for C++/Python: libmc.

libmc is a memcached client library for Python without any other dependencies in runtime. It's mainly written in C++ and Cython. libmc can be considered as a drop in replacement for libmemcached and python-libmemcached.

libmc is developing and maintaining by Douban Inc. Currently, It is working in production environment, powering all web traffics in douban.com. Realtime benchmark is available on travis: https://travis-ci.org/douban/libmc/builds/57124335#L1611 .

The source code has been open sourced on GitHub: https://github.com/douban/libmc .

Best Regards.

Douban Inc. | PAN, Myautsai

[Abioy Sun]

good job

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[Zhang Alex]

Hi, It's awsome

I want get mc from connection pool. I got error "ThreadUnsafe: mc client created in (28740, 'Thread-4')".  

在 2015年4月4日星期六 UTC+8下午2:09:41，PAN Myautsai写道：

[PAN, Myautsai]

Dear Alex,

Thanks for trying libmc. Basically one libmc client can only exists in just one thread (instead of using it across multi threads). If you want to use libmc in a multi-thread environment, the simplest way is to create libmc client in each thread, otherwise you may need to on write connection pool wrapper by yourself.

Please refer https://github.com/douban/libmc#is-libmc-thread-safe- first and open a new issue on GitHub https://github.com/douban/libmc/issues/new with the code snippet to reproduce for further discussion.

Best Regards.

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Douban Inc. | PAN, Myautsai

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[Zhang Alex]

yes,i did it yesterday. the ThreadUnsafe still there.

I review libmc code, update _client.pyx 

def _check_thread_ident(self): pass

It worked, but sometimes, I got segmentfault randomly.

PAN, Myautsai <kelvi...@gmail.com>于2015年11月18日周三 14:48写道：

[PAN, Myautsai]

Dear Alex,

Please don't remove the `_check_thread_ident`, otherwise libmc will be running in a thread-unsafe environment, and that's is the reason why you got segmentation fault. Again, please open a issue with your reproducing code on GitHub and then we can discuss about it.

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PAN, Myautsai

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