cloudwatch-perf-log

A simple package that logs executions time of code chunks in a format that makes it easy to create AWS metrics

Usage

This simple package is supposed to provide timing for methods in your code, and allow an easy creation of custom metrics in AWS CloudWatch

Installing the npm

npm install cloudwatch-perf-log

Requiring the module

const performanceTimer = require("cloudwatch-perf-log");

Using timing methods

  performanceTimer.start_timing("some-code-block");
    
  ...
  
  performanceTimer.stop_timing("some-code-block");

Will provide logs in the output of e.g. lambda logs, that looks something like thos:

performance-test ms 10

That log as viewed in CloudWatch logs will look something like

2017-03-22T11:27:32.888Z	8aa3e28a-0ef2-11e7-bdf8-69bab79b207d	performance-test ms 2

Given that formt it is trivial to create desired custom CloudWatch metrics using the console: using the following template [timestamp, request, metric=performance*, unit=ms, value=*] and specifying $value as the value of the metric