Re: [rules-users] New project is Drools Engine suitable for it ?
You have to consider the number of users and the frequency of rule changes.
The persistent rules are combined at runtime into a ruleset used by the
engine. Multiple sessions can be executed from a ruleset.
If the User-specific rules are added to a the global rules in such a way
that the criteria identifying the User is part of the matching criteria
for the rule you could have a single ruleset for all users.
There is an overhead to the initialization of rules which means that if
performance is important you would do better to maintain a single
ruleset at runtime.
If the ruleset is invalidated frequently by changes to rules then it
would be better to maintain a ruleset per User and build the ruleset on
demand and cache the ruleset.
On 2010-10-26 11:36, Gregory Czerwinski wrote:
Question about Drools usage ?
Hello All.
I have question about using Drools in my new project. I have this kind of
scenario to fufill with rules engine.
Scenarios.
Each user has it own set of rules that determine if he should be notified
about event,
and those are fully editable by system administrators.
There are also global rules indicating that User should be notified – common
for all users.
My question is how to use Drools engine in this concert situation, as it is
not global set of rules that can be putted once in to engine, but set of
changing per User rules ?
Thanks for help : )