Or upgrade to 1.0 and use leveled compaction
(http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra)
On Thu, Oct 13, 2011 at 4:28 PM, aaron morton wrote:
> They only have a minimum time, gc_grace_seconds for deletes.
>
> If you want to be really watch disk space reduce the compa
They only have a minimum time, gc_grace_seconds for deletes.
If you want to be really watch disk space reduce the compaction thresholds on
the CF.
Or run a major compaction as part of maintenance.
cheers
-
Aaron Morton
Freelance Cassandra Developer
@aaronmorton
http://www.the
durable_writes sounds great - thank you! I really do not need commit log
here.
Another question: it is possible to configure live time of Tombstones?
Regards,
Maciej
> - Serializing data is not an option, because I would like to have possibility
> to access data using console
fair enough, but I would do some tests to see the difference in performance and
disk space
> - Using Cassandra to build something like "HTTP session store" with short TTL
> is not an a
- RF is 1. We have few KeySpaces, only this one is not replicated - this
data is not that very important. In case of error customer will have to
execute process again. But again, I would like to persist it.
- Serializing data is not an option, because I would like to have
possibility to access data
Some thoughts…
> non replicated Key Space
Not sure what you mean here. Do you mean RF 1 ? I would consider using 3.
Consider what happens you want to install a rolling upgrade to the cluster.
> single Column Family, where key is session ID and each column within row
> stores single key/value -
Hi *,
I would like to use Cassandra to store session related informations. I do
not have real HTTP session - it's different protocol, but the same concept.
Memcached would be fine, but I would like to additionally persist data.
Cassandra setup:
- non replicated Key Space
- single Column F
hi,
a few weeks back this topic had some discussion (cassandra as a session
store). subsequently, i threw together a quick hack to have PHP use
Cassandra as a session store. A benefit I quickly found is that I could
rely on Cassandra to expire the sessions and not PHP session garbage
collection.
Sounds like you're seeing the bug in 0.7.0 preventing deletion of
non-Data.db files (i.e. your Index.db) post-compaction. This is fixed
for 0.7.1. (https://issues.apache.org/jira/browse/CASSANDRA-2059)
On Wed, Feb 2, 2011 at 8:15 AM, Omer van der Horst Jansen
wrote:
> We're using Cassandra as t
We're using Cassandra as the back end for a home grown session
management system. That system was originally built back in 2005 using
BerkelyDB/Java and a data distribution system that used UDP multicast.
Maintenance was becoming increasingly painful.
I wrote a prototype replacement service using
Hi Joe,
On 02/02/2011 02:58 AM, Joe Stump wrote:
FWIW we used Memcached for session data at Digg without any major issues. The
one thing we did end up doing to reduce the LRU on sessions was to modify the
slab size and put sessions in their own Memcached cluster. Probably not an
issue for you
I'm still very new to Cassandra, but when I started reading about it the first
thing I thought about was a session store. It's based (in part from what I
understand) on Dynamo which is (again, I could be wrong) used at Amazon as the
session store for your shopping cart.
So I would certainly re
If your sessions are fairly long-lived (more like hours instead of minutes) and
you crank up a suitable row cache and make sure your db is consistent (via
quorum read/writes or write:all, read:1) - sure, why not? Especially if you're
already familiar with Cassandra; possibly even have a deploy
What I'm still unclear about, and where I think this is suitable, is
Cassandra being used as a data warehouse for current and past sessions tied
to a user. Yes, other things are great for session management, but I want
to provide near real time session information to my users ... quick and
simple
was in Yahoo.
>>>>
>>>> Tong
>>>>
>>>> -Original Message-
>>>> From: buddhasystem [mailto:potek...@bnl.gov]
>>>> Sent: Tuesday, February 01, 2011 9:57 AM
>>>> To: cassandra-u...@incubator.apache.org
>>>>
o.
>>>
>>> Tong
>>>
>>> -Original Message-
>>> From: buddhasystem [mailto:potek...@bnl.gov]
>>> Sent: Tuesday, February 01, 2011 9:57 AM
>>> To: cassandra-u...@incubator.apache.org
>>> Subject: Re: cassandra as session store
...@bnl.gov]
>> Sent: Tuesday, February 01, 2011 9:57 AM
>> To: cassandra-u...@incubator.apache.org
>> Subject: Re: cassandra as session store
>>
>>
>> For completeness:
>>
>> http://stackoverflow.com/questions/3746685/running-django-site-in-multiserver
I was in Yahoo.
>
> Tong
>
> -Original Message-
> From: buddhasystem [mailto:potek...@bnl.gov]
> Sent: Tuesday, February 01, 2011 9:57 AM
> To: cassandra-u...@incubator.apache.org
> Subject: Re: cassandra as session store
>
>
> For completeness:
>
&g
AM
To: cassandra-u...@incubator.apache.org
Subject: Re: cassandra as session store
For completeness:
http://stackoverflow.com/questions/3746685/running-django-site-in-multiserver-environment-how-to-handle-sessions
http://docs.djangoproject.com/en/dev/topics/http/sessions/#using-cached-sessions
n?
>>
>> Tong
>>
>>
>>
>> -Original Message-
>> From: buddhasystem [mailto:potek...@bnl.gov]
>> Sent: Tuesday, February 01, 2011 9:42 AM
>> To: cassandra-u...@incubator.apache.org
>> Subject: Re: cassandra as session store
>>
n context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-as-session-store-tp5981871p5981961.html
> Sent from the cassandra-u...@incubator.apache.org mailing list archive at
Nabble.com.
s probably faster and easier to set up.
>
>
> --
> View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-as-session-store-tp5981871p5982024.html
> Sent from the cassandra-u...@incubator.apache.org mailing list archive at
> Nabble.com.
uesday, February 01, 2011 9:42 AM
> To: cassandra-u...@incubator.apache.org
> Subject: Re: cassandra as session store
>
>
> Most if not all modern web application frameworks support sessions. This
> applies to Django (with which I have most experience and also run it with
> X.509 securi
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-as-session-store-tp5981871p5982024.html
Sent from the cassandra-u...@incubator.apache.org mailing list archive at
Nabble.com.
Too messy. It's all out there for you
> to use.
>
> Regards,
> Maxim
>
> --
> View this message in context:
> http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-as-session-store-tp5981871p5981961.html
> Sent from the cassandra-u...@incubator.apache.org mailing list archive at
> Nabble.com.
>
...@incubator.apache.org
Subject: Re: cassandra as session store
Most if not all modern web application frameworks support sessions. This
applies to Django (with which I have most experience and also run it with
X.509 security layer) but also to Ruby on Rails and Pylons.
So, why would you re-invent the wheel? Too
o use.
Regards,
Maxim
--
View this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/cassandra-as-session-store-tp5981871p5981961.html
Sent from the cassandra-u...@incubator.apache.org mailing list archive at
Nabble.com.
Are you going to use TTLs to expire the session columns automagically? (we're
working on something similar as well)
On 2/1/11 12:30 PM, "Roshan Dawrani" wrote:
Please do keep this discussion on the mailing list and not take it offline. :-)
I will be in the same boat very soon, I think.
It wi
Please do keep this discussion on the mailing list and not take it offline.
:-)
I will be in the same boat very soon, I think.
It will be great to hear from people who have already gone down this road
and used Cassandra as a session store in a clustered environment.
On Tue, Feb 1, 2011 at 10:56
Cool, maybe we can help each other out. I'm using multiple web-apps,
all running in Resin containers. Have you thought about schema or how
to generate sessionIds for cookies?
-Kal
On Tue, Feb 1, 2011 at 12:22 PM, Sasha Dolgy wrote:
> I am working on this tonight with jetty as front end and cassa
I am working on this tonight with jetty as front end and cassandra as
backend session store. Hopefully.
On 1 Feb 2011 18:19, "Kallin Nagelberg" wrote:
> Hey,
> I am currently investigating Cassandra for storing what are
> effectively web sessions. Our production environment has about 10 high
> en
Hey,
I am currently investigating Cassandra for storing what are
effectively web sessions. Our production environment has about 10 high
end servers behind a load balancer, and we'd like to add distributed
session support. My main concerns are performance, consistency, and
the ability to create uniq
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