How to use

migrate

method

in

org.springframework.data.redis.connection.RedisClusterConnection

@Override
public void reshard(final RedisClusterNode source, final int slot, final RedisClusterNode target) {
  Assert.notNull(source, "Source node must not be null.");
  Assert.notNull(target, "Target node must not be null.");
  execute((RedisClusterCallback<Void>) connection -> {
    connection.clusterSetSlot(target, slot, AddSlots.IMPORTING);
    connection.clusterSetSlot(source, slot, AddSlots.MIGRATING);
    List<byte[]> keys = connection.clusterGetKeysInSlot(slot, Integer.MAX_VALUE);
    for (byte[] key : keys) {
      connection.migrate(key, source, 0, MigrateOption.COPY);
    }
    connection.clusterSetSlot(target, slot, AddSlots.NODE);
    return null;
  });
}

@Override
public void reshard(final RedisClusterNode source, final int slot, final RedisClusterNode target) {
  Assert.notNull(source, "Source node must not be null.");
  Assert.notNull(target, "Target node must not be null.");
  execute((RedisClusterCallback<Void>) connection -> {
    connection.clusterSetSlot(target, slot, AddSlots.IMPORTING);
    connection.clusterSetSlot(source, slot, AddSlots.MIGRATING);
    List<byte[]> keys = connection.clusterGetKeysInSlot(slot, Integer.MAX_VALUE);
    for (byte[] key : keys) {
      connection.migrate(key, source, 0, MigrateOption.COPY);
    }
    connection.clusterSetSlot(target, slot, AddSlots.NODE);
    return null;
  });
}

@Override
public void reshard(final RedisClusterNode source, final int slot, final RedisClusterNode target) {
  Assert.notNull(source, "Source node must not be null.");
  Assert.notNull(target, "Target node must not be null.");
  execute((RedisClusterCallback<Void>) connection -> {
    connection.clusterSetSlot(target, slot, AddSlots.IMPORTING);
    connection.clusterSetSlot(source, slot, AddSlots.MIGRATING);
    List<byte[]> keys = connection.clusterGetKeysInSlot(slot, Integer.MAX_VALUE);
    for (byte[] key : keys) {
      connection.migrate(key, source, 0, MigrateOption.COPY);
    }
    connection.clusterSetSlot(target, slot, AddSlots.NODE);
    return null;
  });
}