@Override
    public long setSize(String setName) {
        Long size = redisClient.scard(setName);
        return size != null ? size.longValue() : -1;
    }
@ Override public long setSize ( String setName ) { Long size = redisClient . scard ( setName ) ; return size != null ? size . longValue ( ) : - 1 ; }
{@inheritDoc}