More DataEngines questions

[Luca Beltrame]

On domenica 4 gennaio 2009 12:03:21 Aaron J. Seigo wrote:

> well, sources are created on demand, though. there are a few million
> twitter users; we don't load everyone's account in the TwitterEngine ;)

Well, I think I'm finally getting the grasp of it. I was misled by the term 
"source"... technically a Twitter account is a source as well, right? 

I think the thing could be set up much easier than I originally thought. 
Here's the workflow as it could work:

- User puts in the term "foo" as in search term;
- The term "foo" is used as source in the DataEngine, which then fetches the 
information;
- Said information is then presented to the user.

Am I correct? And if so, does a DataEngine keep in memory the result of old 
sources? (asking to evaluate the performnce and resource consumption).

> so in such a situation, your DataEngine would only need to create the
> sources requested.

Again, I was misled by the term "source". I didn't think my queries could be 
sources (as in fact, they could).
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