GAE's Memcache

if value: #Data still cached … else: #Data without cached …

class MainHandler(webapp2.RequestHandler): def get(self): memcache.set(“name”, “LevelUp”)

    value = memcache.get("name")

    self.response.write(value + "<br/>")

    memcache.set_multi({"name": "LevelUp", "url": "httlp://www.dotblogs.com.tw/larrynung"})
    values = memcache.get_multi(["name", "url"])

    self.response.write(values["name"] + "<br/>")
    self.response.write(values["url"] + "<br/>")

application = webapp2.WSGIApplication([ (’/’, MainHandler) ])

class Article(db.Model): id = db.StringProperty(required=True) name = db.StringProperty() content = db.TextProperty()

class Blog(db.Model): id = db.StringProperty(required=True) name = db.StringProperty(required=True) url = db.LinkProperty(required=True) articleIDs = db.StringListProperty()

class MainHandler(webapp2.RequestHandler): def get(self): self.response.write("<html><body>")

    blogs = db.GqlQuery("select * from Blog Limit 1")

    if not blogs or blogs.count() == 0:
        blog = Blog(id=str(uuid.uuid1()), name="LevelUp", url="http://www.dotblogs.com.tw/larrynung")

        articleID = str(uuid.uuid1())
        Article(id=articleID, name="hello", content="hello world").put()

        blog.articleIDs = [articleID]

        blog.put()
        self.response.write("Blog data saved...&lt;br/&gt;&lt;br/&gt;")
        self.redirect("/")
        return
    
    blog = memcache.get("blog")
    if blog:
        self.response.write("Cached blog data...&lt;br/&gt;&lt;br/&gt;")
    else:
        self.response.write("Blog data loading...&lt;br/&gt;&lt;br/&gt;")

        blog = Blog.gql("Limit 1")[0]

        self.response.write("Save blog data to memcache...&lt;br/&gt;&lt;br/&gt;")

        memcache.set("blog", blog, 5)

    self.response.write(blog.name + "&lt;br/&gt;")
    self.response.write(blog.url + "&lt;br/&gt;")

    for articleID in blog.articleIDs:
        article = Article.gql("where id = :1", articleID)[0]
        self.response.write(article.name + "&lt;/br&gt;")
        self.response.write(article.content + "&lt;/br&gt;")
        self.response.write("&lt;br/&gt;")


    self.response.write("&lt;/body&gt;&lt;/html&gt;")

application = webapp2.WSGIApplication([ (’/’, MainHandler) ])