[rules-users] How to reduce transaction time

[Stephen Masters]

Rather than creating the knowledge base every time a request is made, you should be creating a knowledge base once. Probably during application start-up. Each request should just trigger creating a new session, which may well take just a few milliseconds.

Steve


On 5 Nov 2013, at 10:17, arpitmittal <arpitmittal2000 at gmail.com> wrote:

> Hi All,
> 
> My front end application has transaction timeout of 200 milli Sec and my
> code is taking upto 1200 ms to  load & compile the DRL & store in cache.
> So I tried to create a package of compiled DRL so that it saves compilation
> time at run time, but to my surprise the reponse time increated to 3000
> milli sec. 
> Please let me know how to reduce the transaction time?
> 
> *I was using below method to use DRL:-*
> ruleBase = RuleBaseFactory.newRuleBase(
> String droolsPath = folder + "/" + <DRL file name>;
> File f = new File(droolsPath);
> FileInputStream fInputStream = new FileInputStream(f);
> Reader source = new InputStreamReader(fInputStream);
> PackageBuilder builder = new PackageBuilder();
> builder.addPackageFromDrl(source);
> File processFile = new File(folder + "/" + < rules Flow File Name>);			
> FileInputStream processFileInputStream = new FileInputStream(processFile);
> Reader processFileSource = new InputStreamReader(processFileInputStream);
> builder.addProcessFromXml(processFileSource);
> builder.compileAll();
> Package[] pkg = builder.getPackages();
> ruleBase.addPackages(pkg);
> WorkingMemory workingMemory = ruleBase.newStatefulSession();
> workingMemory.insert(customer);
> workingMemory.startProcess(this.processName);
> workingMemory.fireAllRules();
> 
> *I am using below code while using package:-*
> Resource resourceRuleFlow = (Resource)
> ResourceFactory.newFileResource(<rules Flow File path>);
> Resource resourcePackage = (Resource)
> ResourceFactory.newFileResource(<package File path>);
> KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
> kbuilder.add(resourceRuleFlow, ResourceType.DRF);
> kbuilder.add(resourcePackage, ResourceType.PKG);
> kbase = KnowledgeBaseFactory.newKnowledgeBase();
> kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
> StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
> ksession.insert(customer);
> ksession.startProcess(this.processName);
> ksession.fireAllRules();
> 
> 
> My understanding is if we are using package which contains compiled rules
> then it should take less time as compared to DRL file.
> Please help me how to sort out this issue..
> 
> 
> 
> --
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