Re: DBI multicasting?

If it's just for redundancy (and load balancing), you could make a wrapper for the DBI module that upon a database failure will try to replay to transaction on the other server. If it's only for reading it shouldn't be too hard.

- ask

-- 
ask bjoern hansen, http://ask.netcetera.dk/   !try; do();

Comment on Re: DBI multicasting?

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Re: Re: DBI multicasting? by rob_au (Abbot) on Nov 19, 2001 at 07:57 UTC
Agreed, this should be fine for the extraction of data - But if the client is looking submitting or changing data to the databases, then the best method would be for the wrapper to have two (or more) concurrent DBI handles with `DBI->autocommit` disabled. The `DBI->commit` method could be called after `execute` statements to all database handles had been issued. While this method isn't as good as internal synchronisation at the database level, it should suffice for most circumstances. Ooohhh, Rob no beer function well without!	[reply] [d/l] [select]
Re: Re: Re: DBI multicasting? by ask (Pilgrim) on Nov 19, 2001 at 16:15 UTC
So what do you do if the commit fails on the second database handle? In any case it's hard to give advice on something like this without knowing more details about what kind of application the system needs to support. - ask -- ask bjoern hansen, http://ask.netcetera.dk/ !try; do();	[reply]