04-query-test.js - Amazon DynamoDB

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04-query-test.js

Program 04-query-test.js melakukan operasi Query di TryDaxTable.

const AmazonDaxClient = require("amazon-dax-client"); var AWS = require("aws-sdk"); var region = "us-west-2"; AWS.config.update({ region: region, }); var ddbClient = new AWS.DynamoDB.DocumentClient(); var daxClient = null; if (process.argv.length > 2) { var dax = new AmazonDaxClient({ endpoints: [process.argv[2]], region: region, }); daxClient = new AWS.DynamoDB.DocumentClient({ service: dax }); } var client = daxClient != null ? daxClient : ddbClient; var tableName = "TryDaxTable"; var pk = 5; var sk1 = 2; var sk2 = 9; var iterations = 5; var params = { TableName: tableName, KeyConditionExpression: "pk = :pkval and sk between :skval1 and :skval2", ExpressionAttributeValues: { ":pkval": pk, ":skval1": sk1, ":skval2": sk2, }, }; for (var i = 0; i < iterations; i++) { var startTime = new Date().getTime(); client.query(params, function (err, data) { if (err) { console.error( "Unable to read item. Error JSON:", JSON.stringify(err, null, 2) ); } else { // Query succeeded } }); var endTime = new Date().getTime(); console.log( "\tTotal time: ", endTime - startTime, "ms - Avg time: ", (endTime - startTime) / iterations, "ms" ); }