Example of running hystrix command in current thread instead of dedicated thread pool

HystrixRunInCallerThread.java

import com.netflix.hystrix.HystrixCommand;
import com.netflix.hystrix.HystrixCommandGroupKey;
import com.netflix.hystrix.HystrixCommandProperties;


public class HystrixRunInCallerThread {

    static HystrixCommandProperties.Setter setter = HystrixCommandProperties.Setter()
            .withExecutionIsolationStrategy(HystrixCommandProperties.ExecutionIsolationStrategy.SEMAPHORE)
            .withExecutionIsolationSemaphoreMaxConcurrentRequests(10)
            ;

    public static void main(String[] args) {
        System.out.println(Thread.currentThread().getName());

        HystrixCommand.Setter cmdSetter = HystrixCommand.Setter
                .withGroupKey(HystrixCommandGroupKey.Factory.asKey("test"))
                .andCommandPropertiesDefaults(setter)
                ;

        HystrixCommand<String> command = new HystrixCommand<String>(cmdSetter) {
            @Override
            protected String run() throws Exception {
                System.out.println(Thread.currentThread().getName());
                return "42";
            }
        };

        command.execute();
    }

}