03-getitem-test.js

Das Programm 03-getitem-test.js führt GetItem-Operationen für TryDaxTable aus.

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 = 1;
var sk = 10;
var iterations = 5;

for (var i = 0; i < iterations; i++) {
  var startTime = new Date().getTime();

  for (var ipk = 1; ipk <= pk; ipk++) {
    for (var isk = 1; isk <= sk; isk++) {
      var params = {
        TableName: tableName,
        Key: {
          pk: ipk,
          sk: isk,
        },
      };

      client.get(params, function (err, data) {
        if (err) {
          console.error(
            "Unable to read item. Error JSON:",
            JSON.stringify(err, null, 2)
          );
        } else {
          // GetItem succeeded
        }
      });
    }
  }

  var endTime = new Date().getTime();
  console.log(
    "\tTotal time: ",
    endTime - startTime,
    "ms - Avg time: ",
    (endTime - startTime) / iterations,
    "ms"
  );
}