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// 填入用户名/密钥,用户名和密钥直接硬编码到代码中或者明文存储都存在很大的风险,建议在配置文件或者环境变量中密文存放,使用时解密。创建实例时,如果开启了ACL才需要添加以下代码。 String accessKey = System.getenv("ROCKETMQ_AK");
x底层的架构不体现,只提供TPS。 4.8.0版本中一个Broker由一个主节点和两个备节点组成,当您购买的Broker数为1时,实际创建3个Broker节点,购买2个Broker时(如图1所示)创建6个Broker节点,以此类推。NameServer为2个节点。 图1 选择代理数量 单可用区 实例选择单可
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
存储容量:定义单个代理可以保存的存储容量。 单个代理TPS:定义单个代理的TPS性能。 单个代理Topic数上限:定义单个代理可以创建的Topic数量。 单个代理消费组数上限:定义单个代理可以创建的消费组数量。 分布式消息服务RocketMQ版4.8.0支持的产品规格如表1所示。 TPS(Transaction
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
的消息类型为“定时”。 适用场景 定时消息适用于以下场景: 消息对应的业务逻辑有时间窗口要求,如电商交易中超时未支付关闭订单的场景。在订单创建时发送一条定时消息,5分钟以后投递给消费者,消费者收到此消息后需要判断对应订单是否完成支付,如果未完成支付,则关闭订单。如果已完成,则忽略。
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"
and CLOUD_SDK_SK in the local environment ak = os.environ["CLOUD_SDK_AK"] sk = os.environ["CLOUD_SDK_SK"] projectId = "{project_id}"