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Python 真牛逼,什么库都有。需要写个 round robin 算法,随手一搜,居然也有这么个库,还挺好用,在此分享。如果有需要用 Python 实现 round robin 的,都不用自己写了,直接用这个库即可。Round robin 是一个非常简单又实用的调度机制,也就是所谓的轮询制。
一、安装
安装:
pip install roundrobin
二、使用
>>> import roundrobin >>> get_roundrobin = roundrobin.basic(["A", "B", "C"]) >>> ''.join([get_roundrobin() for _ in range(7)]) 'ABCABCA' >>> # weighted round-robin balancing algorithm as seen in LVS >>> get_weighted = roundrobin.weighted([("A", 5), ("B", 1), ("C", 1)]) >>> ''.join([get_weighted() for _ in range(7)]) 'AAAAABC' >>> # smooth weighted round-robin balancing algorithm as seen in Nginx >>> get_weighted_smooth = roundrobin.smooth([("A", 5), ("B", 1), ("C", 1)]) >>> ''.join([get_weighted_smooth() for _ in range(7)]) 'AABACAA'
详见:https://pypi.org/project/roundrobin/