如何在基于 Java 的应用程序中为 DynamoDB 设置 TTL [英] How to set TTL in Java based app for DynamoDB

问题描述

您好，我需要通过 AWS Java SDK 以编程方式为 DynamoDB 中的表设置时间.是否可以?我知道最近引入了 TTL 功能 - http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html

Hi I need to set time to live programmatically for a table in DynamoDB via AWS Java SDK. Is it possible? I know that TTL feature is introduced recently - http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/TTL.html

更新:没有特别的注释，但我们可以手动做:

UPDATE: There is no special annotaion, but we can do it manually:

@DynamoDBAttribute
private long ttl;

并在 AWS 中将其配置为 ttl - http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/time-to-live-ttl-how-to.html

and configure it as ttl in AWS - http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/time-to-live-ttl-how-to.html

long now = Instant.now().getEpochSecond(); // unix time
long ttl = 60 * 60 * 24; // 24 hours in sec
setTtl(ttl + now); // when object will be expired

推荐答案

AmazonDynamoDBClient.updateTimeToLive 记录在 这里 或直接链接 这里

AmazonDynamoDBClient.updateTimeToLive documented here or direct link here

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