weWare

Craft Marketplace App

• Overview
• Technologies
• Getting Started
• Performance Testing
• License

Overview

E-commerce app for homemade goods and wares.

Team Members

• Julia Gens - j-gens - Photo Carousel Service
• Djason Sylvaince - ingdjason - Reviews Service
• Emily Meeks - minglewook - Product Details Service
• Logan Dudley - logandudley - Checkout Service

Photo Carousel Service Contributors

• Silin Dang - silkyh13
  • Designed and built the front-end and UI
• Julia Gens - j-gens
  • Replaced and built out photo carousel service back end
  • Optimized PostgreSQL data schema to reduce query time latency from 3s to 4ms
  • Executed horizontal scaling with multiple EC2 instances and implemented load balancer for 200% increase in throughput while maintaining response time latency

Technologies

• JavaScript
• Node/Express
• PostgreSQL
• AWS (EC2/S3)
• New Relic
• Loader.io
• k6.io

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes.

Installing

1. Clone the repository onto your local machine

$ git clone https://github.com/j-gens/craft-marketplace-app.git

2. Change directories into the craft-marketplace-app root directory

$ cd craft-marketplace-app

3. Install the dependencies in a local node_modules folder

$ npm install

4. Generate the data and seed the PostgreSQL database

This command will generate product data (10M entries) and image data (35M entries)

$ npm run-script seed

5. Assemble the bundle within the public folder

$ npm run-script build

6. Start the server on your local machine

$ npm start

7. View in browser by going to http://localhost:3000

Testing

The legacy tests were written using Jest. Run them with the following command:

$ npm run-script test

Performance Testing

Local performance testing was done with k6 as the load testing tool.

Below is one of the k6 results printout from testing. Things to note:

• vus = active virtual users (with vus_max being the maximum possible number of virtual users)
  • For the test below, the vus_max was set to 1000
• http_reqs = the total number of HTTP requests that k6 generated
  • For the test below, the http_reqs was 1173/s
• http_req_duration = the total time for the request (how long the server took to process the request and respond)
  • For the test below, the http_req_duration was an average of 129ms and max of 1.22s

Performance testing of the deployed app was done with loader.io as the cloud-based load testing tool.

Below is a loader.io results printout from testing 100 requests per second.

Below is a second loader.io results printout from testing 1000 requests per second.

License

This project is licensed under the MIT License - see the LICENSE file for details