Redis Python Queue-yiyi
RedisQueue.py文件内容：import redis
class RedisQueue(object):
"""Simple Queue with Redis Backend"""
def __init__(self, name, namespace='queue', **redis_kwargs):
"""The default connection parameters are: host='localhost', port=6379, db=0"""
self.__db= redis.Redis(**redis_kwargs)
self.key = '%s:%s' %(namespace, name)
def qsize(self):
"""Return the approximate> return self.__db.llen(self.key)
def empty(self):
"""Return True if the queue is empty, False otherwise."""
return self.qsize() == 0
def put(self, item):
"""Put item into the queue."""
self.__db.rpush(self.key, item)
def get(self, block=True, timeout=None):
"""Remove and return an item from the queue.
If optional args block is true and timeout is None (the default), block
if necessary until an item is available."""
if block:
item = self.__db.blpop(self.key, timeout=timeout)
else:
item = self.__db.lpop(self.key)
if item:
item = item
return item
def get_nowait(self):
"""Equivalent to get(False)."""
return self.get(False)
使用
>>> from RedisQueue import RedisQueue
>>> q = RedisQueue('test')
>>> q.put('hello world')
打开另外一个窗口
redis-cli 客户端显示结果:
redis 127.0.0.1:6379> keys *1) "queue:test"redis 127.0.0.1:6379> type queue:testlistredis 127.0.0.1:6379> llen queue:test(integer) 1redis 127.0.0.1:6379> lrange queue:test 0 11) "helloworld"
另外脚本可以得到:
>>> from RedisQueue import RedisQueue>>> q = RedisQueue('test')>>> q.get()'hello world'
页:
[1]