Django配置redis缓存

Django配置redis缓存

(1)首先安装django-redis

pip install django-redis

(2)在settings中配置如下所示：

#  改配置仅为示例，具体要根据自己需求来配置，比如LOCATION配置项，比如缓存个数，可以配置多个

CACHES = {
    "default": {  # 省市区数据
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
    "session": {  # session
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/1",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
    "verify_code": {  # 验证码
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/2",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
    "history": {  # 商品浏览记录
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/3",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
    "cart": {  # 购物车
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/4",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    },
}

# 修改Django的Session机制使用redis保存，且使用名为'session'的redis配置。（非必须配置)
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "session"

(3)使用redis

# 举一个短信验证码的例子

class SMSCodeView(APIView):
    """短信验证码"""

    def get(self,request, mobile):
        # 创建redis连接对象
        redis_conn = get_redis_connection('verify_code')
        send_flag = redis_conn.get('send_flag_%s' % mobile)
        if send_flag:
            return Response({'message': '获取短信验证码过于频繁，60秒后再试'}, status=status.HTTP_400_BAD_REQUEST)
        # 生成验证码
        sms_code = '%06d' % random.randint(0, 999999)
        logger.info(sms_code)
        # 创建redis管道，把操作命令塞进管道，减少redis数据库的连接次数，提高性能
        pl = redis_conn.pipeline()
        # 把验证码存到redis数据库
        pl.setex('sms_%s' % mobile, constants.SMS_CODE_REDIS_EXPIRES, sms_code)
        # 利用互亿无线发短信
        send_sms_code.delay(sms_code, mobile)
        # 在redis里存储一个标记，代表这个手机号已发过短信
        pl.setex('send_flag_%s' % mobile, constants.SEND_SMS_CODE_INTERVAL, 1)
        # 执行管道命令
        pl.execute()
        return Response({"message": "ok"})