Architecture JMS

Hello, I'm currently working to shape an architecture for our project. We need to implement a full failover and HA infrastructure. Our project, based on xCP is workflow intensive that means we will have a lot of automatic activities and only few users. My question is quite simple, is it possible to dedicate JMS to only work on automatic task ? In my mind, when the Content Server wants to throw a new automatic activities, it creates a new workitem and JMS pops a queue of workitem, is it true ? Many Thanks.

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kcrkarthik

How about creating a separate/additional Content Server instance? Have that content server serve the same repository. by this way you would get two JMS.

On one CS instance, disable workflow threads and make all the jobs to point to this JMS. This way, JOBS would run on 1 JMS and worflow related items would run on the other JMS.

Check "Dedicating a Content Server to TaskSpace" section of xCP Performance Tuning Guide.

-Karthik

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DCTM_Guru

Do you have 6.7 SP1? If so, you can take advantage of Stateless Process engine. It processes a series of automatic activities in single session/thread.

Julien.Fontaine

Yes Johnny,

We will use 6.7 SP1. I will have a look to process stateless.

Do you know also if it's possible to dedicate a JMS to work only on workflow tasks ?

DCTM_Guru

Unfortunately, I havent really looked at this before. I know you can "scale out" and add more JMS, but I'm not certain if you can assign a particular one. I know you can define jobs to run on a particular server/JMS.

harjits

There is no way to do assingn one

kcrkarthik

How about creating a separate/additional Content Server instance? Have that content server serve the same repository. by this way you would get two JMS.

On one CS instance, disable workflow threads and make all the jobs to point to this JMS. This way, JOBS would run on 1 JMS and worflow related items would run on the other JMS.

Check "Dedicating a Content Server to TaskSpace" section of xCP Performance Tuning Guide.

-Karthik

Julien.Fontaine

Good idea Karthik.

I will have a look to the xCP Performance Tuning guide.

And do you think it's possible to do load balancing between two JMS dedicated to workflow ?

Many thanks.

kcrkarthik

load "balancing" "specific to workflow threads" would NOT happen with this, as only one JMS will always be used for workflows.

Julien.Fontaine

Yes but if I have two JMS dedicated to workflow threads ?

kcrkarthik

Oh yeah. that is possible. I got a little confused.

In fact the xcp document that i mentioned has recommendations on how many max workflow threads has to be configured per CS and polling interval for them and when to add a new CS instance to serve the needs of high automatic task throughput.

-karthik

Julien.Fontaine

Ok, I already know for the multi-JMS instance but I think that load balancing is not possible !

So I can manage HA problem and "virtualize" Failover with such architecture.

Thank you Karthik. I mark the question as Answered.