How to use

writeBackups

method

in

org.infinispan.distribution.DistributionInfo

private Optional<Cache<Object, Person>> findCache(Ownership ownership, Object key) {
 List<Cache<Object, Person>> caches = caches();
 ClusteringDependentLogic cdl = cache1.getAdvancedCache().getComponentRegistry().getComponent(ClusteringDependentLogic.class);
 DistributionInfo distribution = cdl.getCacheTopology().getDistribution(key);
 Predicate<Cache<?, ?>> predicate = null;
 switch (ownership) {
   case PRIMARY:
    predicate = c -> c.getAdvancedCache().getRpcManager().getAddress().equals(distribution.primary());
    break;
   case BACKUP:
    predicate = c -> distribution.writeBackups().contains(c.getAdvancedCache().getRpcManager().getAddress());
    break;
   case NON_OWNER:
    predicate = c -> !distribution.writeOwners().contains(c.getAdvancedCache().getRpcManager().getAddress());
 }
 return caches.stream().filter(predicate).findFirst();
}