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Recent Announcements

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适用于 Valkey 的 Amazon ElastiCache 现已支持持久性 - AWS
Amazon Web Services · 2026-06-02 · via Recent Announcements

今天,AWS 宣布 Amazon ElastiCache 支持持久性。持久性使您能够将 ElastiCache 用于需要微秒级读取延迟、但不能容忍数据丢失的工作负载。借助持久性支持,ElastiCache 现在使用多可用区事务日志跨多个可用区(AZ)持久存储数据,从而实现快速故障转移、数据库恢复和节点重启,以防止在极少数故障情况下发生数据丢失。

您可以在两种持久性选项之间进行选择:同步写入和异步写入。同步写入在响应客户端之前将数据保存到至少两个可用区,旨在实现零数据丢失,同时保持个位数毫秒级的写入延迟。异步写入在响应客户端之后保存数据,保持微秒级写入延迟且无需额外成本。但是,在极少数故障情况下,最多可能丢失 10 秒的未提交数据。这两个选项均可保持微秒级读取延迟。现在,您可以将 ElastiCache 用于缓存之外更广泛的使用场景(这些场景不可接受数据丢失),例如:人工智能智能体的长期记忆、人工智能智能体的工作流状态、RAG 应用程序的知识库、支付令牌化以及实时库存管理。

ElastiCache 的持久性功能从 Valkey 9.0 开始,在所有 AWS 商业区域、AWS 中国区域和 AWS GovCloud(美国)区域推出。要开始使用,请创建新的 ElastiCache 集群,并使用 AWS 管理控制台、AWS 软件开发工具包(SDK)或 AWS 命令行界面(CLI)选择您的首选持久性选项。有关定价详情,请访问 Amazon ElastiCache 定价页面。要了解更多信息,请访问 ElastiCache 文档博客。