Section "2.2. Why use a Rule Engine" in the documentation gives a wealth of extra information that I forgot about first time round! -----Original Message----- From: Anstis, Michael (M.) Sent: 08 August 2008 09:07 To: 'Rules Users List' Subject: RE: [rules-users] Drools vs Business Logic Well, IMO, common sense suggests highly specialised hand crafted code optimised to a particular problem domain *should* be faster than a generic algorithm (taking this further why not dump the high level languages all together and opt for C++ or assembler, if you really really want you squeeze performance?!?). However should your problem domain change you have the burden of changing and re-optimising your code. Lots of hassle. IMO, rule engines are great where your problem domain is likely to change or you want to externalise your rule definitions for whatever reason (maintainability, exposure to user definitions etc). You'd be better off comparing the performance of a prototype hand-crafted solution to generic rule engine solution - I think you'd be surprised as to just how fast the generic solution is - there have been quite a few postings to this group where people have done performance tests of Drools. Only you can make these decisions as you know your requirements best. -----Original Message----- From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Harsh Jetly Sent: 08 August 2008 08:18 To: rules-users(a)lists.jboss.org Subject: [rules-users] Drools vs Business Logic Hi , Firstly I would like to apologize for sending the same question to both the mailing lists and sending it multiple number of times. I assure you , it shall not happen again . I am using version 4.0.4 of drools . I have a basic question : If we compare a rule engine to code written within the application , which would prove to be faster . I know about the rete algorithm and concepts of node sharing and caching . Another question that I have is , in which situation will Drools be best suited ? Thanks a ton Harsh Jetly Larsen & Toubro Infotech Ltd. www.Lntinfotech.com This Document is classified as: |------| | [X] | |------|L&T Infotech Proprietary |------| | [ ] | |------|L&T Infotech Confidential |------| | [ ] | |------| L&T Infotech Internal Use Only |------| | [ ] | |------|L&T Infotech General Business This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system. ______________________________________________________________________ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users