My (limited and possibly inaccurate) understanding of memcached,
specifically the client implementation for CAS, is that a particular key
is hashed, and based on the outcome of that, the client looks for it on
a specific node. So I'm not sure what good a copy of the data on another
node will do if
On 8/7/2013 12:18 PM, Aaron Bennett wrote:
What we're planning for scheduled maintenance, is using memcached-tool
to push a given server's cache to another server before shutting it down
for maintenance... something as simple as this..
./memcached-tool localhost dump | nc 11211
My (limited
On 8/7/2013 11:59 AM, Scott Battaglia wrote:
You do realize you will have to configure and tune any solution :-)
Well, yah :).
Before comparing solutions, I would recommend defining your requirements
and your tolerance for failure (if you have not). For example, Is it
acceptable that if a no
From: Scott Battaglia [mailto:scott.battag...@gmail.com]
Sent: Wednesday, August 7, 2013 2:59 PM
To: cas-user@lists.jasig.org
Subject: Re: [cas-user] fault-tolerant/redundant/HA CAS deployment
You do realize you will have to configure and tune any solution :-)
Before comparing solutions, I
You do realize you will have to configure and tune any solution :-)
Before comparing solutions, I would recommend defining your requirements
and your tolerance for failure (if you have not). For example, Is it
acceptable that if a node (that has > 99.9% uptime) goes down, a user must
re-authentic
On 8/7/2013 7:08 AM, Jérôme LELEU wrote:
Memcached processes can crash but it never happens for us
It's not just a matter of unplanned downtime; we deploy updates and
patches and do other routine maintenance on a regular basis. With the
memcached ticket registry, if we intentionally pull out
On 8/6/2013 2:13 PM, Andrew Morgan wrote:
As others have said on the mailing list before, is it really that big of a
deal if people have to reauthenticate?
If there is no concern about users reauthenticating, why not just skip
CAS completely and have them authenticate directly to each app ;)?
Hi,
Yes, Memcached processes can crash but it never happens for us (10
Memcached servers, thousands of requests every second). It's very stable
and performant.
That said, you can add replication using repcache. You can even use
Couchbase as a replacement of Memcached (replication / persistence) fo
On Tue, 6 Aug 2013, Paul B. Henson wrote:
Memcached is more performant than EhCache globally, but what really
makes the difference is the serialization through the Kryo library
(instead of the Java serialization).
My concern on memcached is that it shards the tickets, and if you lose any
give
On 8/6/2013 2:13 AM, Jérôme LELEU wrote:
For those who complain about the "poor" documentation, I advice you
to search accross the mailing lists.
I did spend a fair amount of time on Google, and poking through the
mailing list archives. I did find some helpful information, but nothing
really
On 8/5/2013 7:37 PM, Pierce, Eric wrote:
The tomcat session is only used during the initial authentication -
it's just there to keep track of where the user is in the webflow
during login. Once a user has authenticated and the TGT has been
sent, the tomcat session isn't needed.
If you lose a s
-user@lists.jasig.org
Subject: Re: [cas-user] fault-tolerant/redundant/HA CAS deployment
Hi,
For those who complain about the "poor" documentation, I advice you to search
accross the mailing lists. We already had several discussions about
Ehcache/Memcached security/performance conc
gt; From: Paul B. Henson
> Sent: Monday, August 05, 2013 8:14 PM
> To: cas-user@lists.jasig.org
> Subject: Re: [cas-user] fault-tolerant/redundant/HA CAS deployment
>
>
>
> Once I get that working, I'm probably also going to try and cluster the
> underlying tom
From: Paul B. Henson
Sent: Monday, August 05, 2013 8:14 PM
To: cas-user@lists.jasig.org
Subject: Re: [cas-user] fault-tolerant/redundant/HA CAS deployment
Once I get that working, I'm probably also going to try and cluster the
underlying tomcat ses
On 8/5/2013 1:43 PM, Aaron Bennett wrote:
Did you get any decent response from this?
Not yet; but I did send the initial query late on a Friday, so I'm
hoping maybe a few will trickle in over the course of the week :).
compose a similar email when I saw yours. I'm hoping I can just use
an
On 08/05/2013 01:43 PM, Aaron Bennett wrote:
> Hi Paul --
>
> Did you get any decent response from this? I was just about to compose a
> similar email when I saw yours. I'm hoping I can just use an mmcache ticket
> registry and let a hardware Load Balancer take care of the session stuff, but
ct: [cas-user] fault-tolerant/redundant/HA CAS deployment
>
> I finished setting up an initial standalone CAS server, and am now
> moving on to getting redundant servers set up behind a load balancer.
>
> The first page of the documentation
> (https://wiki.jasig.org/display/CASUM/Home) s
I finished setting up an initial standalone CAS server, and am now
moving on to getting redundant servers set up behind a load balancer.
The first page of the documentation
(https://wiki.jasig.org/display/CASUM/Home) says:
Additionally, session state replication is unnecessary since tick
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