07 Redis存储Session

django-redis-sessions 官方文档：https://pypi.org/project/django-redis-sessions/

dango-redis 官方文档：http://niwinz.github.io/django-redis/latest/#_configure_as_cache_backend

安装模块：

安装模块
 pip3 install django-redis-sessions
或者
pip3 install django-redis

本文这里用的是django 2.0语法，创建django项目

django-admin startproject mydjango

修改settings.py文件加入字段：

CACHES = {
    "default": {
        "BACKEND": "django_redis.cache.RedisCache",
        "LOCATION": "redis://127.0.0.1:6379/0",
        "OPTIONS": {
            "CLIENT_CLASS": "django_redis.client.DefaultClient",
            "PASSWORD": "",
#             "PARSER_CLASS": "redis.connection.HiredisParser",
#             "SOCKET_TIMEOUT": 10,
#             "CONNECTION_POOL_CLASS_KWARGS": {
#                 "max_connections": 2,
#             }
        }
    }
}
  
#SESSION_COOKIE_AGE = 30 * 60 #设置session过期时间为30分钟
SESSION_ENGINE = 'django.contrib.sessions.backends.cache'

创建webapp

django-admin startapp app01

编写session视图函数 webapp.views

from django.shortcuts import render,HttpResponse

def set_session(request):
    request.session['username']='zhanan'
    request.session['age']=18
    return HttpResponse("设置sesson成功")

def get_session(request):
    username=request.session['username']
    age = request.session['age']
    return HttpResponse(username+":"+str(age))

添加url路由

vim mydjango/urls.py

from django.contrib import admin
from django.urls import path
from webapp import views
urlpatterns = [
    path('set_session/',views.set_session),
    path('get_session/',views.get_session),
    path('admin/', admin.site.urls),

确保启动redis服务端，默认方式启动

redis-server &

redis-cli 连接无误
发送ping命令得到pong即可

启动django

python3 manage.py runserver 0.0.0.0:8000

访问视图，设置一条session信息，存入redis数据库

检查redis数据库，是否存在一条key

127.0.0.1:6379> keys *
1) ":1:django.contrib.sessions.cachep220moqvxclz2hyjqmbybqs3v8ck2i39"

获取这个key的值
127.0.0.1:6379> get :1:django.contrib.sessions.cachep220moqvxclz2hyjqmbybqs3v8ck2i39
"x80x04x95!x00x00x00x00x00x00x00}x94(x8cusernamex94x8cx06chaogex94x8cx03agex94Kx12u."