课程: AWS for Developers: DynamoDB

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Streams in DynamoDB

Streams in DynamoDB - Amazon Web Services (AWS)教程

课程: AWS for Developers: DynamoDB

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Streams in DynamoDB

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- [Instructor] What do you do when you need to know about changes in your data in real time? Let's say you want to send a notification every time an account has been updated. Well that's where streams come in. Streams are a log of changes to a table that can be programmatically accessed. These changes, including inserts, updates and deletes, are stored in the table for 24 hours. To work with streams, you have to enable them on your table and specify how much data you'd like your stream to contain. Previous record, new record or just changes. Keep in mind, like most features in DynamoDB, there's a cost associated with storing this data. Records are grouped into shards and you'll need to access that data in chunks. Streams have their own end point that is different than your DynamoDB table end point. You'll need to access the table stream by grabbing the Amazon Resource Name, or ARN, from the console. Now I'll show you how to do that right now. As you can see, I'm no longer in my local…

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