Multiple API requests slowing down application

[Archit Verma via StackOverflow]

I am trying to make a news feed kind of application. The problem is I have to make multiple http requests to generate the news feed which slows it down. The three API requests that I am making are following:

1. Get all the people that a user is following
2. Get id's of the recent 300 activities for a user
3. Get details of an activity using activity id

The problem is I have to make request #2 and #3 for each user and each activity respectively.This is taking 10-15 minutes to generate a news feed for a user with only 25 followers. How can I optimize it?

PS: I am using Google App Engine with Python along with datastore for my backend.

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