[erlang-questions] High volume CDR analysis

Ukyo Virgden <>
Mon Jan 21 17:56:30 CET 2008


Hi Robert,

Actually, I'd image general queries that will run for sometime maybe  
in batch and generate reports from CDR data. So therefore, no as-it- 
happens

What do you mean by column based table representation?

Thanks in advance,
Ukyo,

On 16.Oca.2008, at 11:57, Robert Raschke wrote:

> I'm not sure if Erlang is a good fit for CDR analysis.  It depends on
> what you're trying to achieve.  For accepting CDR records and storing
> them, I wouldn't think mnesia would be that good a fit, due to the
> sheer volume.  But if you were to design a more suitable data
> structure for CDR record storage, then that might be really quite
> interesting.  You may not need random access and complex queries,
> maybe something that only allows sequential access (maybe with the
> ability to filter) and is designed for quick roll-ups would be more
> suitable. Column based table representations come to mind.
>
> If you want to actually analyse (i.e., summarise in some way) in real
> time, without storing the raw incoming records in between, then Erlang
> could be a good platform.  But even then, you would probably want to
> investigate in your own data structures for the summary tables, since
> the incoming data rate would probably mean way too many  
> transactions on
> your summary data to be really comfortable for mnesia.
>
> As far as I know, stuff like this is the forte of systems like K, J
> and APL.  These usually come with nice examples about how they can
> process enormous amounts of stock market ticker information in real
> time.  That would be closer to the kind of data you get from CDR, I
> would guess
>
> Robby
>
> PS. By "real time" in the above, I just mean that roll up of data is
> done as it appears, not in a btach way later on; it has nothing to do
> with real time programming.
>
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