核心就是利用pickle將數(shù)據(jù)序列化胡桨，以文字流的方式緩存至redis，要用的時候再取出來進行反序列化。

import redis
from datetime import datetime
from flask import session,request
from ..models import db

import pickle



class Redis:
    @staticmethod
    def connect():
        r = redis.StrictRedis(host='localhost', port=6379, db=0)
        return r

    #將內存數(shù)據(jù)二進制通過序列號轉為文本流炭剪，再存入redis
    @staticmethod
    def set_data(r,key,data,ex=None):
        r.set(key,pickle.dumps(data),ex)

    # 將文本流從redis中讀取并反序列化辉阶，返回返回
    @staticmethod
    def get_data(r,key):
        data = r.get(key)
        if data is None:
            return None

        return pickle.loads(data)

@home.route('/detail/<int:id>')
def detail(id):
    today = datetime.now().date()
    list_goods = None

    # 緩存標記先壕，在頁面顯示出來
    cached_redis_remark = ""


    r = Redis.connect()

    #商品詳情
    key = "data-cached:detail-id-%d" % (id)
    #從redis讀取緩存（不存在的商品不會緩存，因為還是獲取得到None)
    goods = Redis.get_data(r, key)
    if current_app.config['ENABLE_CACHED_PAGE_TO_REDIS'] and goods:
        # flash("讀取緩存數(shù)據(jù)")
        cached_redis_remark += "goods|"
    else:
        # flash("查詢數(shù)據(jù)庫")
        goods=Goods.query.get(id)
        #將時間轉為字符串才能序列化
        simple_goods = goods
        if goods:
            simple_goods.timestamp = str(goods.timestamp)
        #緩存入redis
        if current_app.config['ENABLE_CACHED_PAGE_TO_REDIS']:
            # 加入redis緩存,5分鐘過期
            Redis.set_data(r, key, simple_goods, current_app.config['EXPIRE_CACHED_PAGE_TO_REDIS'])



    #推薦商品列表
    #推薦數(shù)量
    recommend_count = 4 if goods else 12

    key = "data-cached:detail-recommend-%d" % recommend_count
    list_recommend_goods = Redis.get_data(r, key)
    if current_app.config['ENABLE_CACHED_PAGE_TO_REDIS'] and list_recommend_goods:
        # flash("讀取緩存數(shù)據(jù)")
        cached_redis_remark += "recommend|"
    else:
        list_recommend_goods = Goods.query.filter(Goods.coupon_expire >= today).filter_by(effective=True).limit(recommend_count).all()
        # 緩存入redis
        if current_app.config['ENABLE_CACHED_PAGE_TO_REDIS']:
            # 加入redis緩存,5分鐘過期
            Redis.set_data(r, key, list_recommend_goods, current_app.config['EXPIRE_CACHED_PAGE_TO_REDIS'])



    return render_template("home/detail.html", goods=goods,list_goods=list_recommend_goods,cached_redis_remark=cached_redis_remark)