Re: Prevalent Repository

On Tue, May 19, 2009 at 12:19 PM, Diego Miranda <[email protected]>wrote:

> Yes, our idea is to publish the code. We are doing some refactoring now and
> adding some functionality like encrypting the snapshots and journals,
> deterministics triggers, and listeners over the objects.


I've added some simple Serializer decorators for compression and encryption
on the master branch[1], to be included in the upcoming Prevayler 2.4
release. I remember the main challenge I ran into when I first tried to
compress and encrypt journals was that compression and encryption mechanisms
don't necessarily make it easy to read or write exactly to variable-length
record boundaries (which is how transactions are written to the journal). So
the approach I ended up with simply wraps the journal serializer in order to
compress or encrypt each individual transaction, allowing Prevayler to
continue to do its normal parsing of the journal file structure.

[1]
http://github.com/jsampson/prevayler/tree/master/core/src/main/java/org/prevayler/foundation/serialization

What approach are you taking for encrypting journals?

Cheers,
Justin

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