Hi,this is my firs post on this group. I'am looking for some clarification about using google app engine with java. I have this kind of problem to resolve: (It's quite simple for me to do this in java and oracle database with oracle tables and triggers but in this case I must use only google APIs to do so)...
"*You are responsible to implement a backend feature for new **app. This feature is a internet site. It looks like this:* *main **point of feature is to notify users when one of their friends **overtakes them in a game (lets say it has more experience) **thus* *each user might have friends (or it might not have) * *API **call is made to backend each time user gains experience (assume you **get this info)* *if **user has just overtaken some of his friends, a API call is made* *to send him a notification (assume function to send notification exists)* *if user **is registered first time it gains experience **API **call is made to backend for each new friend user has added (or* *removed)* *Backend is implemented on Google App Engine (GAE) in Java language.* *Describe how would you do the following:* *1) use GAE services to store user data (user himself and friend list)* *Where would you store user data? By what it would be indexed, based on* *requirements/flow above?* *Consider cost and performance (scaling).* *2) GAE provides memcache service, how would you use it to minimize* *reads from datastore (mamcache is free, datastore is not)* *3) Product management has come up wiht new feature: friend size badge!* *This is a feature that works like this:* *10%* *users with most friends get gold badge* *top* *30% get silver badge* *top* *50% get bronze badge* *How would you change your design from question (1) to be able to* *determine users badges in realtime (in API call handler)?*" Can someone drive me trough this case or give me some advice on this? -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/7dc46c25-336c-4c27-95cf-46e857382058%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
