4 ms·
Okay, so your position is that Facebook is unable to query for a list of activity by user, and does not have it divided by user in any other way? That seems non
by code_duck 8y ago
Okay, so your position is that Facebook is unable to query for a list of activity by user, and does not have it divided by user in any other way? That seems nonsensical to me, but if you say so.
- chillacy 8y agoLet's take Facebook out of the picture, it's too hot a topic. Let's talk about the datawarehouse of some other big tech company like amazon or adcrunch. The DW can be queried by user but each query might take 10 mins to evaluate, so it can't be used for realtime UIs. Instead you would have to denormalize the data to display to a user. That's a project, it might take a few months.