python redis使用心得

发布与订阅

连接池代码 redis_conn.py

import redis

REDIS_CONN = {
	'HOST': '192.168.1.11',
	'PORT': '6378',
	'DB': '1',
	'CHANNEL': 'alarm',
	'PASSWORD': '123456',
}

def redis_conn():
	try:
		pool = redis.ConnectionPool(host=REDIS_CONN['HOST'],
									db=REDIS_CONN['DB'],
									port=REDIS_CONN['PORT'])
		r = redis.Redis(connection_pool=pool, password=REDIS_CONN['PASSWORD'])
		return r
	except Exception as err:
		print err

发布端代码

import json
redis_publish_data = {
        "id": "",
        "content": "",
    }

redis_publish_data['host_id'] = 123
redis_publish_data['content'] = "内容"
redis_publish_data = json.dumps(redis_publish_data)

REDIS_OBJ = redis_conn()
REDIS_OBJ.publish(REDIS_CONN['CHANNEL'], redis_publish_data)

订阅端代码

import json
REDIS_OBJ = redis_conn()

def redis_subscribe():
    p = REDIS_OBJ.pubsub()
    p.subscribe(REDIS_CONN['CHANNEL'])
    while True:
        for item in p.listen():
            if item['type'] == 'message':
                # print item['channel'], item['data'], type(item['data'])
                data = json.loads(item['data'])
                print data['content'].encode('utf-8')
        time.sleep(0.5)

管道

from redis_conn import *

def redis_pipeline():
    pipe = REDIS_OBJ.pipeline()
    REDIS_OBJ.set('name', 'wangjian')
    REDIS_OBJ.set('role', 'SRE')
    pipe.execute()

Redis命令参考 http://doc.redisfans.com/