for (int i = 0; i < 20; i++) {
BookStore bookStore = getBookStore(initialAddress, feature);
verifyStrategy(bookStore, SequentialStrategy.class);
String bookId = "123";
Book book = bookStore.getBook(bookId);
assertNotNull("expected non-null response", book);
assertEquals("unexpected id", 123L, book.getId());
String address = getCurrentEndpointAddress(bookStore);
System.out.println(address);
if (Server.ADDRESS2.equals(address)) {
address2Count++;