04-query-test.js - Amazon DynamoDB
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04-query-test.js

The 04-query-test.js program performs Query operations on TryDaxTable.

/** * Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * This file is licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. A copy of * the License is located at * * http://aws.amazon.com/apache2.0/ * * This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR * CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ 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"); }