[rules-users] Design of Rule Engine

[Manav]

Hi, 

I am using the 5.x version of Drools and currently new. I am currently 
evaluating Drools for an internal 

project . 

The product's impressive and the support is absolutely superb. 

To design a new Rule Engine using Drools as the base are there any 
suggested design patters that i can take a look at ? If there are any best 
practices that should be followed and gotchas to be avoided  it would be 
great if i could read about them. 


For example if i am writing rules where two files contain a common set of rules, 
is it possible to abstract out the common set of rules to a seperate DRL and 
have that DRL referenced in other DRL's ? 


These and other similar questions are what i am seeking answers to . 

Regards,
Manav