django-redis官网文档：
http://django-redis-chs.readthedocs.io/zh_CN/latest/
redis.py文档
https://redis-py.readthedocs.io/en/latest/

#Django的缓存配置
#caches缓存，
CACHES={
    "default":{
        "BACKEND":"django_redis.cache.RedisCache",
        "LOCATION":"redis://127.0.0.1:6379/9",
        "OPTIONS":{
            "CLIENT_CLASS":"django_redis.client.DefaultClient",
        }
    }
}
#下面是把用户登录的session存储在redis中
#配置session存储
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
SESSION_CACHE_ALIAS = "default"

缓存设置

from django.core.cache import cache #缓存
设置缓存：cache.set("yzm",rand_str,20)#键，值，时间
读缓存：cache.get("yzm")#键

redis操作

浏览记录.jpg

#浏览记录
from django_redis import get_redis_connection   #redis数据库
conn = get_redis_connection("default")
history_key = "history_%d"%user.id
#移除列表中的goods_id
conn.lrem(history_key,0,goods_id)
#把goods_id插入列表的左侧
conn.lpush(history_key,goods_id)
#只保存用户最新浏览的5条信息
conn.ltrim(history_key,0,4)

购物车jpg

购物车
        conn = get_redis_connection('default')
        cart_key = "cart_%d" %user.id
        #先尝试获取sku_id的值，使用hget cart_key属性
        #如果sku_id在hash中不存在，hget返回None，hget 键 属性
        cart_count = conn.hget(cart_key,sku_id)
=================================================
        conn = get_redis_connection("default")
        cart_key = "cart_%d"%user.id
        #hgetall：{"商品id":"商品数量"}
        cart_dict = conn.hgetall(cart_key)
        #redis更新
        conn.hset(cart_key,sku_id,count)
        vals = conn.hvals(cart_key) #hvals返回所有的值
        #删除
        conn.hdel(cart_key,sku_id)
        #获取长度
        cart_count = conn.hlen(cart_key)
=================================================
···