dynamodb 数据迁移

Werner Vogels, Chief Technology Officer of Amazon, has posted an article on his blog detailing the release of DynamoDB, a NoSQL database solution built from the ground up to scale in the cloud.

亚马逊首席技术官沃纳·沃格斯(Werner Vogels)在他的博客上发表了一篇文章，详细介绍了DynamoDB的发布，DynamoDB是一种NoSQL数据库解决方案，它是从头开始构建并可以在云中扩展的。

This is exciting for a number of reasons, not least of all because it provides a solid NoSQL platform that developers can use for elastic computing.  The availability of DynamoDB means that many more developers can start building scaleable apps in the cloud without having to worry about separate database scaling and performance.  Amazon have been working with NoSQL and non-relational databases for a long time, and this release represents a major step forward for developers hosting with Amazon.

令人兴奋的原因有很多，尤其是因为它提供了坚实的NoSQL平台，开发人员可以将其用于弹性计算。 DynamoDB的可用性意味着更多的开发人员可以开始在云中构建可扩展的应用程序，而不必担心单独的数据库扩展和性能。 亚马逊与NoSQL和非关系数据库已经使用了很长时间，该版本代表了托管在亚马逊上的开发人员的一大进步。

According to Vogels, DynamoDB is “[A] fully managed NoSQL database service that provides fast performance at any scale.”.  So now not only do we have a viable, fully supported NoSQL platform, the database layer will also be automatically scaled and managed, so latency and availability on the data end (traditionally one of the major choke points of any application’s performance) are addressed from the beginning.

Vogels表示，DynamoDB是“ [A]完全托管的NoSQL数据库服务，可在任何规模上提供快速性能。” 因此，现在我们不仅拥有一个可行的，完全受支持的NoSQL平台，而且还将自动缩放和管理数据库层，因此可以从以下内容解决数据端的延迟和可用性(传统上是任何应用程序性能的主要瓶颈之一)。开始。

Check out the original article here.

在此处查看原始文章。

If you are planning on working with DynamoDB or have done some work with other database solutions on Amazon, share your experiences with us in the comments.

如果您打算使用DynamoDB，或者已经在Amazon上使用其他数据库解决方案做了一些工作，请在评论中与我们分享您的经验。

DynamoDB与SimpleDB (DynamoDB vs SimpleDB)

DynamoDB saves you time by automatically distributing data so you can scale, rather than forcing you to provision SimpleDB domains of 10GB a piece and then manually partitioning the data.

DynamoDB通过自动分发数据来进行扩展，从而节省了时间，而不是强迫您设置10GB的SimpleDB域，然后手动对数据进行分区。 DynamoDB indexes only the primary key compared to SimpleDB which indexes all colums. You gain speed but loose some capabilities.

与对所有列进行索引的SimpleDB相比，DynamoDB仅对主键进行索引。 您获得了速度，但失去了一些功能。 DynamoDB makes SSD an option

DynamoDB使SSD成为一种选择 The pricing is different. DynamoDB pricing is based on allowed reads/writes per second. SimpleDB is priced according to computational expense of performing queries on your servers – measured in Machine hours. Put simply, DynamoDB is likely to be cheaper for most use cases

价格是不同的。 DynamoDB定价基于每秒允许的读取/写入。 SimpleDB的价格是根据在服务器上执行查询的计算费用(以机器小时为单位)来定价的。 简而言之，对于大多数用例，DynamoDB可能更便宜 DynamoDB has an SLA guarantee, SimpleDB does not because of disk I/O and complex request types

DynamoDB具有SLA保证，SimpleDB不会因为磁盘I / O和复杂的请求类型

翻译自: https://www.sitepoint.com/amazon-releases-dynamodb-fast-scaleable-nosql-database-for-elastic-computing/

dynamodb 数据迁移

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