AWS發佈Aurora Serverless v2預覽版

{"type":"doc","content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在re:Invent 2020的第一個主題演講中，AWS發佈了"},{"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":"的預覽版。Amazon Aurora Serverless MySQL 5.7兼容版的伸縮可以在幾分之一秒內完成，並引入了多可用性區域支持、全局數據庫和讀取副本。"}]},{"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":"產品介紹頁"}]},{"type":"text","text":"列出了新版的主要改進，包括在毫秒級伸縮到數十萬事務處理能力，以及在進行小容量調整時的自動伸縮。兩個版本之間的一個關鍵區別是容量的增加方式：Aurora Serverless V2不是每次都增加一倍實例，而是增加0.5個Aurora容量單位(ACU)。此外，新服務支持多個可用性區域，並將增加目前只在"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/rds\/aurora\/","title":"","type":null},"content":[{"type":"text","text":"Amazon Aurora"}]},{"type":"text","text":"標準版中可用的企業特性。新版本不只是向現有產品中增量地添加新特性，最主要的是它帶來的非常不一樣的自動伸縮能力和設計。雖然它還處於預覽階段，但開發人員和數據庫專家已經對這種新的託管無服務器關係數據庫表現出了濃厚的興趣。Oracle高級數據庫專家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":"看着非雲系統在資源浪費和賬單之間徘徊，Aurora Serverless V2的伸縮能力讓人大開眼界。"}]}]},{"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首席技術官Jeremy Daly（同時也是AWS Serverless Hero）進行了一些詳細的測試，並寫了一篇題爲“Aurora Serverless V2：好，更好，甚至令人驚歎”的長文。他例舉了舊版Aurora Serverless的一些限制和新版本的一些優勢:"}]},{"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":"在過去的18個月裏，我們看到了該產品的一些改進，但是在伸縮速度、故障轉移時間和集羣特性方面仍然存在很多問題……隨着Amazon Aurora Serverless V2的引入，這一切都改變了。我終於看到了預覽版，並花了幾個小時試圖對它進行了測試。我的第一印象？這東西可能是一顆銀彈……除了驚人的伸縮能力之外，它還支持全部的Aurora特性，包括全局數據庫、多可用性區域部署和讀取副本。"}]}]},{"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":"預覽版的主要目的是展示新的縮放特性，很多新的高級特性還沒有在預覽版中提供，例如，Data API、Aurora全局數據庫、性能洞察、Aurora多主、RDS代理和暫停容量等特性。"}]},{"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":"新版本可能面臨"},{"type":"link","attrs":{"href":"https:\/\/aws.amazon.com\/rds\/aurora\/pricing\/","title":"","type":null},"content":[{"type":"text","text":"定價"}]},{"type":"text","text":"方面的挑戰。即使Amazon聲稱客戶可以節約高達90%的數據庫成本(相對於高峯負載)，並建議大多數客戶通過從Aurora Serverless v1遷移到V2來節約成本，但不同的部署和數據庫使用模式導致這種直接的比較變得複雜。Jeremy Daly補充道："}]},{"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":"這一點沒辦法掩飾，Aurora Serverless V2的成本似乎很高。實際上，V2 ACU的價格是v1 ACU的兩倍……但是，這些成本的計算方式存在一些區別。其中一個區別與V2的增量ACU和v1的雙倍實例大小有關……另一個區別與伸縮宕機時間有關。"}]}]},{"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":"預覽版目前只在美國東部(弗吉尼亞州)可用，支持MySQL 5.7。訪問預覽版需要"},{"type":"link","attrs":{"href":"https:\/\/pages.awscloud.com\/AmazonAuroraServerlessv2Preview.html","title":"","type":null},"content":[{"type":"text","text":"註冊"}]},{"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":"原文鏈接"},{"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}}]}