supervisord實現守護進程,保證後臺常駐進程服務的高可用

參考:segmentfault https://segmentfault.com/a/1190000011643781spa http://www.jianshu.com/p/3658c963d28b .net http://www.jianshu.com/p/9abffc905645 3d 注： blog 報ImportError: No module named setuptools,要先安裝

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