Doh! Replace "of" with "if" in the top line. On Tue, Jun 15, 2010 at 7:57 PM, Jonathan Shook <jsh...@gmail.com> wrote:
> There is JSON import and export, of you want a form of external backup. > > No, you can't hook event subscribers into the storage engine. You can > modify it to do this, however. It may not be trivial. > > An easier way to do this would be to have a boundary system (or dedicated > thread, for example) consume data in small amounts, using some temporal > criterion, with a checkpoint. If the results of consuming the data are > idempotent, you don't have to use a checkpoint, necessarily, but some cyclic > rework may occur. > > If your storage layout includes temporal names, it should be > straightforward. The details how exactly how would depend on your storage > layout, but it is not unusual as far as requirements go. > > > > On Tue, Jun 15, 2010 at 7:49 PM, Anthony Ikeda < > anthony.ik...@cardlink.com.au> wrote: > >> We are currently looking at a distributed database option and so far >> Cassandra ticks all the boxes. However, I still have some questions. >> >> >> >> Is there any need for archiving of Cassandra and what backup options are >> available? As it is a no-data-loss system I’m guessing archiving is not >> exactly relevant. >> >> >> >> 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? >> >> >> >> >> >> Anthony Ikeda >> >> Java Analyst/Programmer >> >> Cardlink Services Limited >> >> Level 4, 3 Rider Boulevard >> >> Rhodes NSW 2138 >> >> >> >> Web: www.cardlink.com.au | Tel: + 61 2 9646 9221 | Fax: + 61 2 9646 9283 >> >> [image: logo_cardlink1] >> >> >> >> ********************************************************************** >> 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. >> ********************************************************************** >> > >
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