如何使用JavaScript SDK设置DynamoDB表的按需容量

Question

Amazon DynamoDB具有两种读/写容量模式，用于处理对表的读写：按需置备（默认，符合自由层标准）

这就是我创建预配置表的方式

var AWS = require("aws-sdk");

AWS.config.update({
  region: "us-west-2",
  endpoint: "http://localhost:8000"
});

var dynamodb = new AWS.DynamoDB();

var params = {
    TableName : "Movies",
    KeySchema: [       
        { AttributeName: "year", KeyType: "HASH"},  //Partition key
        { AttributeName: "title", KeyType: "RANGE" }  //Sort key
    ],
    AttributeDefinitions: [       
        { AttributeName: "year", AttributeType: "N" },
        { AttributeName: "title", AttributeType: "S" }
    ],
    ProvisionedThroughput: {       
        ReadCapacityUnits: 10, 
        WriteCapacityUnits: 10
    }
};

dynamodb.createTable(params, function(err, data) {
    if (err) {
        console.error("Unable to create table. Error JSON:", JSON.stringify(err, null, 2));
    } else {
        console.log("Created table. Table description JSON:", JSON.stringify(data, null, 2));
    }
});

如何设置表的按需容量？

Answer 1

您将要按照AWS JavaScript SDK createTable docs中的说明设置BillingMode 。 将以下内容添加到您的参数中：

BillingMode: 'PAY_PER_REQUEST',