Thanks Sylvia, I would like to actually do that actually. Any idea how I can get started?
-----Original Message----- From: Sylvain Lebresne [mailto:sylv...@yakaz.com] Sent: Thursday, 17 June 2010 5:46 PM To: user@cassandra.apache.org Subject: Re: Some questions about using Cassandra On Thu, Jun 17, 2010 at 1:20 AM, Anthony Ikeda <anthony.ik...@cardlink.com.au> wrote: > Thanks Gary, I'm looking at that plug-in feature at the moment but there > seems to be very little documentation on how to use it. There is no documentation whatsoever. This is just a feature proposition right now (it's not included in Cassandra, at least not yet), so it's not a all encouraged to use it unless of course it's to test it and give feedback to the patch author (which I can only encourage you to do :)). But right now you'll have to do it on the application side. > From the Application point of view though we are still trying to model the > process flows based on our technological approach. Mainly due to the fact > that we need real time processing at the application layer over 2 or more > sites at least 1000km apart and we are finding RDBMS to be too slow for the > volumes we are trying to achieve. > > > > We want to move any relational database access off the application and have, > for example, Cassandra transferring whatever information to an underlying > database/LDAP/FileSystem once we reach a final commit point - ultimately > Cassandra being a distributed database it's going to be used more for a > cache or our database. As I said this process depends on which sync protocol > we decide on (messaging, clustering, cloud, etc). > > > > Anthony > > > > > > From: Gary Dusbabek [mailto:gdusba...@gmail.com] > Sent: Thursday, 17 June 2010 2:20 AM > > To: user@cassandra.apache.org > Subject: Re: Some questions about using Cassandra > > > > On Tue, Jun 15, 2010 at 19:49, Anthony Ikeda <anthony.ik...@cardlink.com.au> > wrote: > > Is there any concept of Listeners such that when data is added to Cassandra > we can fire off another process to do something with that data? E.g. create > a copy in a secondary database for Business Intelligence reports? Send the > data to an LDAP server? > > Typically, this is the kind of thing that gets handled at the application > level (your application). There is a feature request for it though. > https://issues.apache.org/jira/browse/CASSANDRA-1016 > > > > Gary. > > _____________________________________________________________________ > This e-mail has been scanned for viruses by MCI's Internet Managed > Scanning Services - powered by MessageLabs. For further information > visit http://www.mci.com > > ********************************************************************** > This e-mail message and any attachments are intended only for the use of the > addressee(s) named above and may contain information that is privileged and > confidential. If you are not the intended recipient, any display, > dissemination, distribution, or copying is strictly prohibited. If you > believe you have received this e-mail message in error, please immediately > notify the sender by replying to this e-mail message or by telephone to (02) > 9646 9222. Please delete the email and any attachments and do not retain the > email or any attachments in any form. > ********************************************************************** > _____________________________________________________________________ This e-mail has been scanned for viruses by MCI's Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.mci.com ********************************************************************** This e-mail message and any attachments are intended only for the use of the addressee(s) named above and may contain information that is privileged and confidential. If you are not the intended recipient, any display, dissemination, distribution, or copying is strictly prohibited. If you believe you have received this e-mail message in error, please immediately notify the sender by replying to this e-mail message or by telephone to (02) 9646 9222. Please delete the email and any attachments and do not retain the email or any attachments in any form. **********************************************************************
