[elephant-devel] Choice of back-end store

[Ian Eslick]

Hi Yarek,

Others may add to this, but the big issues I'm aware of are:

BDB
+ fast
+ can be shared among multiple processes on a single machine
- commercial use requires license

Postmodern
- 5x slower than BDB (last I checked)
++ can be shared among multiple machines
+ open source

Neither system allows you to easily bypass the elephant  
representational framework.  I'll let others comment on this vis-a-vis  
postmodern.

You can use both system's tools for archive, recover, duplication, etc.

Ian

On Jan 2, 2009, at 2:17 PM, Yarek Kowalik wrote:

> Could someone point me to any discussions WRT to choice of back- 
> end?  I'm looking at BDB and Postmodern.   What are advantages/ 
> disadvantages of either one?
>
> I'm guessing that Postmodern offers an opportunity of using and SQL  
> querying against PostgreSQL backend for out-of-process querying and  
> such (does Elephant model make this really possible/practical?),  
> whereas BDB is perhaps faster and you can build/use BDB replication  
> tools.
>
> Thanks,
>
> Yarek
>
>
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