Drools HA
by gboro54
Hi everyone. We are currently evaluating drools as a potential solution of a
high throughput billing system. As is such we are planning to have messages
read from a queue from 2 or more nodes. One thing we are trying to figure
out is best way to share state in drools. The situation we are facing is as
follow:
-Node 1 reads message 1
-Node 2 reads message 2
-Node1 begins execution of rules on message 1 with context information
-Node2 begins execution of rules on message 2 with context information
-Node 1 updates the context information such that rules being executed by
node2 should be reevaluated(i.e node 1 in the rules session executed an
update on the context object)
What is the best way to handle this situation?
Thanks
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14 years, 5 months
KnowledgeAgent and applyChangeSet
by bob.breitling
If I have a KnowledgeAgent and I create a URL Resource and set its
basicAuthenication, username and password attributes then I call the agents
applyChangeSet method I get a HTTPD 401 response from the Guvnor. It does
not happen to my resourse which has a valid username and password, but it
happens to the resource in the changeSet xml tag.
It would seem to me that the resources that are built from the resource I
passed would inherit the basicAuthenication, username and password
attributes that I set and know work, but they don't and I get this error.
If I debug the code and filling in those values on the resource passed to
the createPackageFromResource method before the resource stream is read the
code works.
I am using the NilAuthenicator in the Guvnor components.xml and that seems
to be working. I get access to the Guvnor without being asked for
credentials.
I tried to configure my jboss (4.2.0) in login-config.xml to allow access to
everything as guest. But no luck.
Any suggestions?
Bob
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14 years, 5 months
Doubts about JBPM and Drools versioning rules...
by Cristiano Gavião
Hi,
I've decided to build my own Knowledge OSGi bundle to be able to test
the latest things of Drools and JBPM. Now I have some puzzle is in my
head that I would like someone clarifying me.
Looking at the master branch of the droolsjbpm-parent project, which is
in version 5.4.0-SNAPSHOT, I could see this in its POM:
> <!-- Internal dependencies -->
> <drools.version>5.4.0-SNAPSHOT</drools.version>
> <drools.osgi.version>5.4.0.SNAPSHOT</drools.osgi.version>
> <drools-planner.version>${drools.version}</drools-planner.version>
> <jbpm.version>5.2.0.Final</jbpm.version>
> <jbpm.osgi.version>5.2.0.Final</jbpm.osgi.version>
and at the master branch of the jbpm project, I could see this in its POM:
> <parent>
> <groupId>org.drools</groupId>
> <artifactId>droolsjbpm-parent</artifactId>
> <version>5.3.2-SNAPSHOT</version>
> <!-- relativePath causes out-of-date problems on hudson slaves -->
> <!--<relativePath>../droolsjbpm-build-bootstrap/pom.xml</relativePath>-->
> </parent>
and at the master branch of the drools project, in its POM I could see this:
> <parent>
> <groupId>org.drools</groupId>
> <artifactId>droolsjbpm-parent</artifactId>
> <version>5.4.0-SNAPSHOT</version>
> <!-- relativePath causes out-of-date problems on hudson slaves -->
> <!--<relativePath>../droolsjbpm-build-bootstrap/pom.xml</relativePath>-->
> </parent>
Could someone explain me the choose release cycle and the relationship
of the these projects: droolsjbpm-parent, drools, jbpm ?
I think that I read once that JBPM 5 runs on top of Drools and that both
has different release cycles, but shouldn't Jbpm SNAPSHOT, once it is a
snapshot, *always* use the latest version of droolsjbpm-parent and
consequently the latest of Drools too ?
regards
Cristiano
14 years, 5 months
Scalability Tips
by Gp P
Hi All,
Can drools scale without heavy duty server or commodity servers which
startups uses
Are the tips for increasing performance and failover ? like cache
, clustering
Are there any real life success stories of startups using Drools ?
Thanks ,
Gp
14 years, 5 months
