<p>I always wanted to ask this question. Now that I am going to work on a project involving activity feeds I would like to ask this one. </p>
<ul>
<li>What architecture, tools and strategy will you use to design an activity feed like Facebook? </li>
<li>There will be multiple users who will follow several topics and posts from these areas should show up in the feeds.</li>
<li>It should be fast and should probably be cached. Then again what should be an efficient caching strategy here?</li>
</ul>
<p>Thanks a lot! Any help is highly appreciated.</p>


I always wanted to ask this question. Now that I am going to work on a project involving activity feeds I would like to ask this one. 

- What architecture, tools and strategy will you use to design an activity feed like Facebook? 
- There will be multiple users who will follow several topics and posts from these areas should show up in the feeds.
- It should be fast and should probably be cached. Then again what should be an efficient caching strategy here?

Thanks a lot! Any help is highly appreciated.

Architecture : How would you go about building an activity feed like Facebook?