Django中使用Redis缓存

django-redis documentation是python库,将redis与Django无缝结合了起来。

安装Redis

yum install -y redis

redis的配置文件是/etc/redis.conf,

maxmemory 30mb
maxmemory-policy volatile-lru
databases 1

启动,默认只监听地址是127.0.0.1:6739:

systemctl start redis

验证:

# redis-cli  ping
PONG

安装配置django-redis

安装:

pip install django-redis

在settings.py中配置:

CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
        }
    }
}

使用redis作为session backend

将redis作为session backend不需要额外设置,直接启用session backend即可:

SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "default"

操作redis

(env) lijiaos-mbp:mysite lijiao$ python manage.py shell
Python 3.7.2 (default, Feb 12 2019, 08:15:36)
[Clang 10.0.0 (clang-1000.11.45.5)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from django.core.cache import cache
>>> cache.set("foo", "value", timeout=25)
True
>>> cache.ttl("foo")
20
>>> cache.get("foo")
'value'
>>>

在redis中看到的数据这样的:

127.0.0.1:6379> keys *
1) ":1:foo"
127.0.0.1:6379> get ":1:foo"
"\x80\x04\x95\t\x00\x00\x00\x00\x00\x00\x00\x8c\x05value\x94."

results matching ""

    No results matching ""