public static void put() {
    try {
      Region r1 = cache.getRegion(SEPARATOR + REGION_NAME);
      r1.put("key-1", "server-value-1");
      r1.put("key-2", "server-value-2");
      r1.put("key-3", "server-value-3");
    } catch (Exception ex) {
      Assert.fail("failed while r.put()", ex);
    }
  }
Tests failover initialization by cache operation Threads on secondary
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/HAStartupAndFailoverDUnitTest.java