PersonService.java

@Service
public class PersonService {

    private final List<Person> PEOPLE = new ArrayList<>();

    {
        PEOPLE.add(new Person("Shazin"));
        PEOPLE.add(new Person("Shahim"));
        PEOPLE.add(new Person("Shuhail"));
        PEOPLE.add(new Person("Shuhaib"));
        PEOPLE.add(new Person("Athiyab"));
        PEOPLE.add(new Person("Athif"));
    }

    public List<Person> getPeople() {
        try {
            Thread.sleep(new Random(System.currentTimeMillis()).nextInt(1000));
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return Collections.unmodifiableList(PEOPLE);
    }
}