$ pip install connection_pool

import memcache
from connection_pool import ConnectionPool
# via create function
def create_memcache_client():
    return memcache.Client(['127.0.0.1:11211'])
pool = ConnectionPool(create=create_memcache_client,
                      max_size=10, max_usage=10000, idle=60, ttl=120)
# via lambda
pool = ConnectionPool(create=lambda: memcache.Client(['127.0.0.1:11211']),
                      max_size=10)
# via functools.partial
from functools import partial
pool = ConnectionPool(create=partial(memcache.Client, ['127.0.0.1:11211']),
                      max_size=10)
# using a connection
with pool.item() as memcache:
    memcache.set('foo', 'bar')