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Date: Thu, 17 Jun 2010 20:16:32 -0700
Message-ID: <AANLkTinhVY_U93b4xnM1pisrQFj5DfP2y2YwLBIOlRli@mail.gmail.com>
Subject: Re: Some questions about using Cassandra
From: Benjamin Black <b@b3k.us>
To: user@cassandra.apache.org
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You download the patch and apply it.

On Thu, Jun 17, 2010 at 4:10 PM, Anthony Ikeda
<Anthony.Ikeda@cardlink.com.au> wrote:
> Thanks Sylvia, I would like to actually do that actually. Any idea how I =
can get started?
>
> -----Original Message-----
> From: Sylvain Lebresne [mailto:sylvain@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.Ikeda@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 t=
he
>> process flows based on our technological approach. Mainly due to the fac=
t
>> that we need real time processing at the application layer over 2 or mor=
e
>> 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 h=
ave,
>> for example, Cassandra transferring whatever information to an underlyin=
g
>> 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 prot=
ocol
>> we decide on (messaging, clustering, cloud, etc).
>>
>>
>>
>> Anthony
>>
>>
>>
>>
>>
>> From: Gary Dusbabek [mailto:gdusbabek@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.Ikeda@cardlink.com=
.au>
>> wrote:
>>
>> Is there any concept of Listeners such that when data is added to Cassan=
dra
>> we can fire off another process to do something with that data? E.g. cre=
ate
>> a copy in a secondary database for Business Intelligence reports? Send t=
he
>> data to an LDAP server?
>>
>> =A0Typically, this is the kind of thing that gets handled at the applica=
tion
>> level (your application). =A0There is a feature request for it though.
>> =A0https://issues.apache.org/jira/browse/CASSANDRA-1016
>>
>>
>>
>> Gary.
>>
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