AWS发布Aurora Serverless v2预览版

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在re:Invent 2020的第一个主题演讲中，AWS发布了"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/about-aws\/whats-new\/2020\/12\/introducing-the-next-version-of-amazon-aurora-serverless-in-preview\/","title":"","type":null},"content":[{"type":"text","text":"Amazon Aurora Serverless V2"}]},{"type":"text","text":"的预览版。Amazon Aurora Serverless MySQL 5.7兼容版的伸缩可以在几分之一秒内完成，并引入了多可用性区域支持、全局数据库和读取副本。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/rds\/aurora\/serverless\/","title":"","type":null},"content":[{"type":"text","text":"产品介绍页"}]},{"type":"text","text":"列出了新版的主要改进，包括在毫秒级伸缩到数十万事务处理能力，以及在进行小容量调整时的自动伸缩。两个版本之间的一个关键区别是容量的增加方式：Aurora Serverless V2不是每次都增加一倍实例，而是增加0.5个Aurora容量单位(ACU)。此外，新服务支持多个可用性区域，并将增加目前只在"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/rds\/aurora\/","title":"","type":null},"content":[{"type":"text","text":"Amazon Aurora"}]},{"type":"text","text":"标准版中可用的企业特性。新版本不只是向现有产品中增量地添加新特性，最主要的是它带来的非常不一样的自动伸缩能力和设计。虽然它还处于预览阶段，但开发人员和数据库专家已经对这种新的托管无服务器关系数据库表现出了浓厚的兴趣。Oracle高级数据库专家Christian Abdel-Nour表示："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"看着非云系统在资源浪费和账单之间徘徊，Aurora Serverless V2的伸缩能力让人大开眼界。"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"AlertMe首席技术官Jeremy Daly（同时也是AWS Serverless Hero）进行了一些详细的测试，并写了一篇题为“Aurora Serverless V2：好，更好，甚至令人惊叹”的长文。他例举了旧版Aurora Serverless的一些限制和新版本的一些优势:"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在过去的18个月里，我们看到了该产品的一些改进，但是在伸缩速度、故障转移时间和集群特性方面仍然存在很多问题……随着Amazon Aurora Serverless V2的引入，这一切都改变了。我终于看到了预览版，并花了几个小时试图对它进行了测试。我的第一印象？这东西可能是一颗银弹……除了惊人的伸缩能力之外，它还支持全部的Aurora特性，包括全局数据库、多可用性区域部署和读取副本。"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"预览版的主要目的是展示新的缩放特性，很多新的高级特性还没有在预览版中提供，例如，Data API、Aurora全局数据库、性能洞察、Aurora多主、RDS代理和暂停容量等特性。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"新版本可能面临"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/rds\/aurora\/pricing\/","title":"","type":null},"content":[{"type":"text","text":"定价"}]},{"type":"text","text":"方面的挑战。即使Amazon声称客户可以节约高达90%的数据库成本(相对于高峰负载)，并建议大多数客户通过从Aurora Serverless v1迁移到V2来节约成本，但不同的部署和数据库使用模式导致这种直接的比较变得复杂。Jeremy Daly补充道："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"blockquote","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"这一点没办法掩饰，Aurora Serverless V2的成本似乎很高。实际上，V2 ACU的价格是v1 ACU的两倍……但是，这些成本的计算方式存在一些区别。其中一个区别与V2的增量ACU和v1的双倍实例大小有关……另一个区别与伸缩宕机时间有关。"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"预览版目前只在美国东部(弗吉尼亚州)可用，支持MySQL 5.7。访问预览版需要"},{"type":"link","attrs":{"href":"https:\/\/pages.awscloud.com\/AmazonAuroraServerlessv2Preview.html","title":"","type":null},"content":[{"type":"text","text":"注册"}]},{"type":"text","text":"。"}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong"}],"text":"原文链接"},{"type":"text","text":"："}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"link","attrs":{"href":"https:\/\/www.infoq.com\/news\/2020\/12\/aurora-serverless-v2-aws\/","title":"","type":null},"content":[{"type":"text","text":"AWS Introduces Preview of Aurora Serverless V2"}]}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}