RedisOptions redisOptions = new RedisOptions() .setHost("localhost") .setTcpNoDelay(true) .setMaxPoolSize(10); RedisClient redisClient = RedisClient.create(vertx, redisOptions); PoolOptions poolOptions = new PoolOptions() .setMaxSize(10) .setMinIdle(5) .setIdleTimeout(5000); RedisClient redisClient = RedisClient.create(vertx, new RedisOptions().setPoolOptions(poolOptions)); JsonObject jsonConfig = new JsonObject().put("hosts", "localhost"); RedisClient redisClient = RedisClient.create(vertx, new RedisOptions().setCodec(new JsonCodec(jsonConfig))); redisClient.get("key", res -> { if (res.succeeded()) { String value = res.result(); } else { } });