Homework 5 - Measuring Performance

Measuring app speed

Due: Friday, December 1, 2023 at 3:00:00 PM

Quickstart: To create a new repository under your own GitHub account, you can create a new private repository from this template. Sharing your code, intentionally or unintentionally, is a violation of the academic integrity policy in this course.

Description

You are given a basic script, that is inherently slow (In terms of concurrent requests being satisfied) Your task for this assignment is fairly straightforward.
1. Given the basic server.js update the code to make it more performant.
2. Look out for the section in the code which you think, if optimized, will result in a performance boost.
3. The motivation for the assignment is to elucidate the tools/tricks that can be brought into play to measure your application performance and thus making it better.

Tools / Techniques Used in the Assignment

Flame graphs: Flame graphs are a CPU profiling visualization technique that helps to spot at glance the most frequently used function, and most importantly the time they need to run.
0x: A tool to generate flame-graphs for node.js
```
Install by: npm install -g 0x
```
Artillery: Artillery.io, an open-source, modern, powerful, and flexible load testing toolkit. Artillery is designed to help developers and testers assess the performance and scalability of their systems.
```
Install by: npm install -g artillery
```
MongoDB: Open source NoSQL database management program. Assignment expects you to have a running MongoDB server.
- Installation on Linux/Ubuntu: Check here
- Rest Check here

Install the dependencies using npm install

This will also populate the MongoDB document for you as a postInstall script load.js.
Your server.js will then be communicating with the datastore.

Deliverables

Optimize server.js.
Generate flame-graph using npm run flame-graph
Do the perf testing using npm run load-test. You need to have a running server for this. Run by node server.js
Submit the following merged as a SINGLE PDF
- Flame-graph
- Screenshot for Artillery summary As shown below
- Generated test-run-report (HTML)