[rules-users] Integrate Drools with Java application, need recommendations

[Stephen Masters]

My preference is option 1 … using a Spring application with a class which wraps a knowledge base / session. This has the advantage that sometimes I really do want to be able to mix up rules results with logic that I want to implement in Java code.

There's obviously a performance impact if you additionally marshall to a separate Drools server, but not a huge amount. The decision should be more about whether you expect all business logic to be implemented in the Drools rules or a combination of rules and business logic code. 

Steve


On 6 Sep 2013, at 00:15, srikanthmalli <srikanthmalli at gmail.com> wrote:

> Hi,
> 
> I am trying Drools/Guvnor for very first time, we are planned to do Rule
> Authoring in Guvnor, compile, build and download the package to “Rule
> Package Directory”.
> 
> Now the question I am having is, what is the best way to integrate Drools
> with our Java application?
> Option 1) Build the knowledge agent and start inserting the facts into
> memory for rule evaluation in our application. In this case Drools engine
> use JVM same as application JVM.
> Option 2) Have a Drools Server which builds the knowledge agent, and
> application can send the requests to Drools Server for rule evaluation using
> REST API. Rules will be executed in separate JVM than application JVM.
> 
> I also wondering is there any performance (in terms of execution time)
> difference between the options mentioned above?
> 
> Could you please also let me know if I am thinking in the right direction?
> 
> -Sri
> 
> 
> 
> --
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