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AWS Lambda Kafka 事件源映射(ESM)的预置模式现已在 AWS 亚...
Amazon Web Services · 2026-04-25 · via Recent Announcements

AWS Lambda 现在支持针对在亚太地区(台北)、AWS GovCloud(美国东部)和 AWS GovCloud(美国西部)区域订阅 Apache Kafka 事件源的事件源映射(ESM)提供预置模式。借助预置模式,您可以通过预置事件轮询资源(这些资源随时准备应对突然的流量激增)来优化 Kafka ESM 的吞吐量,帮助您构建具有严格性能要求的高度响应且可扩展的事件驱动型 Kafka 应用程序。

构建流数据应用程序的客户通常使用 Kafka 作为 Lambda 函数的事件源,依赖 Lambda 的完全托管式 ESM 来自动扩展轮询资源以响应事件。但是,如果事件驱动型 Kafka 应用程序需要应对不可预测的流量爆增情况,缺乏对 ESM 吞吐量的控制可能会导致用户体验延迟。通过 Kafka ESM 的预置模式,客户可以在轮询资源(称为事件轮询器)的最小数量和最大数量之间进行预置和自动扩缩,从而微调其 Amazon Managed Streaming for Apache Kafka(MSK)ESM 或自主管理型 Kafka ESM 的吞吐量。此次发布之后,此功能现已在另外三个区域推出。 

您可以通过在 ESM API、AWS 管理控制台、AWS CLI、AWS SDK 和 AWS CloudFormation 中配置事件轮询器的最小数量和最大数量,为 MSK ESM 或自主管理型 Kafka ESM 激活预置模式。您只需为使用的事件轮询器付费(使用事件轮询单元 (EPU) 作为计费单位)。要了解更多信息,请参阅 Lambda ESM 文档AWS Lambda 定价。