We looked into clustering for failover a few years back and actually got
it working. However, setting it up was very complicated and all the
knowledge was in the head of one admin - not a comfortable situation.
Is anyoine clusterning ColdFusion, with or without session failover?
ed
Yes, I'm done several clustered configs. It can seem complicated but
it's not that bad once you know where to go. What are your questions?
-Cameron
On Thu, Apr 14, 2011 at 8:09 AM, szwedo...@epamail.epa.gov wrote:
We looked into clustering for failover a few years back and actually got
it
Don't know yet. I'm going to a meeting today to discuss clustering.
In your experience, does it work well? Any caveats? Are you doing
session failover?
We have 46 applications. All except one connect to Oracle. The one
exception uses Microsoft Access.
It can seem complicated but it's not
On Thu, Apr 14, 2011 at 10:01 AM, szwedo...@epamail.epa.gov wrote:
Don't know yet. I'm going to a meeting today to discuss clustering.
In your experience, does it work well? Any caveats? Are you doing
session failover?
Well, a couple of caveats to any of my opinions:
1) I've mainly setup
On Thu, Apr 14, 2011 at 10:01 AM, szwedo...@epamail.epa.gov wrote:
Don't know yet. I'm going to a meeting today to discuss clustering.
In your experience, does it work well? Any caveats? Are you doing
session failover?
Lastly, and I wanted to send this in a different email...
If your
Wow. Great info. I had Mike Brunt's site up when your email arrived. I
have more reading to do but this info is invaluable.
Thanks again.
ed
__
Ed Szwedo
Web Development Team Lead
ECS Team - ITS-EPA II Contractor
109 TW
I would second Cameron's vote for hardware LB with standard CF instances. We
did this at my last company and it did indeed work well.
-Steve
On Thu, Apr 14, 2011 at 10:32 AM, Cameron Childress camer...@gmail.comwrote:
On Thu, Apr 14, 2011 at 10:01 AM, szwedo...@epamail.epa.gov wrote:
Don't
It's all coming back to me now! I remember looking into load balancers
a few years ago.
If your application can support it, ...
There are many application considerations when you do this so
typically it requires the CF app to be built specifically in a way
that supports it.
I know nothing about
What did you use for the LB? How expensive is it? How much did you
have to modify your apps to take advantage of it?
ed
__
Ed Szwedo
Web Development Team Lead
ECS Team - ITS-EPA II Contractor
109 TW Alexander Drive, Building
Great information Cameron.
I dont mean to digress but is it possible that lets say 2 CF servers are
load balanced and server 1 is processing 25 requests, can the load balancer
be smart to send next incoming requests to server 2 instead of busy server
1? Do Load balancers have some kind of setting
On Thu, Apr 14, 2011 at 11:04 AM, szwedo...@epamail.epa.gov wrote:
I know nothing about LBs nor about any special development techniques to
leverage them. Also, it would not be practical or economical to
re-visit all our apps to make sure they conform to the restrictions of a
LB.
Really,
On Thu, Apr 14, 2011 at 11:15 AM, Ajas Mohammed ajash...@gmail.com wrote:
Great information Cameron.
I dont mean to digress but is it possible that lets say 2 CF servers are
load balanced and server 1 is processing 25 requests, can the load balancer
be smart to send next incoming requests to
Really, the biggest thing to worry about is to make sure that stuff
in
the Application scope is synched.
Our apps are all Mach-II. What impact does this fact have on a decision
to cluster or use a LB?
ed
__
Ed Szwedo
Web
Well in our case, we had very expensive F5 LBs -- but there are alternatives
like barracuda's:
http://www.barracudanetworks.com/ns/products/balancer_overview.php
http://www.barracudanetworks.com/ns/products/balancer_overview.phpNow I
haven't experienced barracuda's but I hear they've come a long
Ed no impact on the Mach-II side.. we were Mach-II as well at my last job.
-Steve
On Thu, Apr 14, 2011 at 11:26 AM, szwedo...@epamail.epa.gov wrote:
Really, the biggest thing to worry about is to make sure that stuff
in
the Application scope is synched.
Our apps are all Mach-II. What
On Thu, Apr 14, 2011 at 11:34 AM, Steven steve...@gmail.com wrote:
Ed no impact on the Mach-II side.. we were Mach-II as well at my last job.
Agreed.
I thought of a few more things...
Scheduled tasks - if you have any, which node should they run on or
should you split some on one and some on
Yes we have scheduled tasks. I like the idea of a dedicated instance
for these.
Caches - Not a problem
IP/URLs - Nothing accesses URLs by IP
Direct URLs - How is this done?
ed
__
Ed Szwedo
Web Development Team Lead
ECS Team
Thanks for the shout out, Cameron. But no, I don't have any resources on
CF411 related to clustering. Technically, it's a list of tools and
resources, and even among the resources I don't really break them down into
subjects within CF itself like that (but perhaps I could). This would be an
area I
Is it a query that's gone? Or a column within it perhaps? Worth double
checking. There is an isquery function, for instance.
As for the datatype issue, I seem to recall there being a feature to
indicate the datatype, which was bolstered in CF 8 or 9. Anyone recall the
details, and whether it may
Thank you for the direction Charlie!
I actually dug deep into the developer's guide last night and this morning.
With that in hand, I felt more confident that my research pointed directly to
data issue being the culprit and that I wasn't running into some esoteric
limitation I wasn't aware of.
All, I am not sure about changes in CF 8 or 9 on this issue, but I remember CF7
had issues retaining datatypes. Essentially using CAST() helps this problem.
More info here:
http://www.bennadel.com/blog/379-ColdFusion-Query-of-Queries-Unexpected-Data-Type-Conversion.htm
On 04/14/2011 02:10 PM,
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