如何使用python-memcache从memcached导出所有键和值? [英] How to export all keys and values from memcached with python-memcache?

问题描述

我想使用python-memcache从memcached服务器导出所有键和值. 该模块中没有此类功能.那怎么办?

I would like to export all keys and values from a memcached server, using python-memcache. There is no such function in that module. How to do it then?

也许需要涉及套接字"模块的更复杂的事情.

Perhaps something more complicated involving the "socket" module would be needed.

推荐答案

这将为您提供内存缓存服务器上的所有密钥，您可以使用任何内存缓存客户端库获取每个密钥的值.

This will get you all the keys on a memcached server, you can use any memcached client library to get the value for each key.

import telnetlib

def get_all_memcached_keys(host='127.0.0.1', port=11211):
    t = telnetlib.Telnet(host, port)
    t.write('stats items STAT items:0:number 0 END\n')
    items = t.read_until('END').split('\r\n')
    keys = set()
    for item in items:
        parts = item.split(':')
        if not len(parts) >= 3:
            continue
        slab = parts[1]
        t.write('stats cachedump {} 200000 ITEM views.decorators.cache.cache_header..cc7d9 [6 b; 1256056128 s] END\n'.format(slab))
        cachelines = t.read_until('END').split('\r\n')
        for line in cachelines:
            parts = line.split(' ')
            if not len(parts) >= 3:
                continue
            keys.add(parts[1])
    t.close()
    return keys

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