Calling service methods from servlets

[luqmanahmad]

Hi there,

Let say we have a node singleton service with a method called doSomething()

Now if we want to call the service from a servlet we can either inject the
service in the servlet directly like:

MyService service = ignite.services().serviceProxy("myService",
"MyService.class", false);
service.doSomething();

or 

create a IgniteCallable and send it to server for execution. For example 

private class MyServiceCallable implements IgniteCallable {
        @ServiceResource(serviceName = "myService")
        private MyService myService;
        
        @Override
        public Object call() throws Exception {
            return myService.doSomething();
        }
}

getGrid().compute().call(new MyServiceCallable());

Now the second call I know will be sent to the server for execution and the
results will be sent back. Question is what is the difference between two
and is there any performance cost using the first technique? Just looking
for the best approach. 

Thanks,
Luqman



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