lucastanziano

// Broken - Inappropriate use of inheritance!
public class InstrumentedHashSet<E> extends HashSet<E> {
     // The number of attempted element insertions
     private int addCount = 0;
     public InstrumentedHashSet() {
     }
     public InstrumentedHashSet(int initCap, float loadFactor) {
          super(initCap, loadFactor);
     }
     @Override public boolean add(E e) {

lucastanziano

public class InstrumentedSet<E> extends ForwardingSet<E> {
     private int addCount = 0;

     public InstrumentedSet(Set<E> s) {
          super(s);
     }

     @Override
     public boolean add(E e) {
          addCount++;

lucastanziano

public class ForwardingSet<E> implements Set<E> {
        private final Set<E> s;

	public ForwardingSet(Set<E> s) {
		this.s = s;
	}

	public void clear() {
		s.clear();
	}

lucastanziano

# Load balancer configuration
upstream exampleApp {
    # Directs to the process with least number of connections.
    least_conn;

    # One failed response will take a server out of circulation for 20 seconds.
    server 127.0.0.1:10080 fail_timeout=20s;
    #server 127.0.0.1:10081 fail_timeout=20s;
    #server 127.0.0.1:10082 fail_timeout=20s;
    #server 127.0.0.1:10083 fail_timeout=20s;