NODE FASTIFY MQTT INFLUX DEMO

Architectural Decisions

Tool & Packages	Why?
TypeScript	Easier to debug type errors for me
Node	Easy to to set up and run
TypeORM	Need to compare it with Sequelize (Great migrations)
mqtt client	Easy to set up node client
node-influx client	Hard but supported officially, Support for Influx v2.*
React Tailwind	Brilliant for poor stylists like myself
MySQL, AWS RDS	One time easy set up
Fastify	Faster && lighter http operations

Project Structure

Single Repo with 2 main folders for the frontend and backend code

Mostly for ease of me collaborating with myself and work concurrently.

How to set up

Prerequisites

• NodeJS V12 and above

Environment

The backend side of the project relies heavily on environment variables. I have accompanied a relevant .env file in the root of the backend project. It can be used as it is, or reference can be made to it.

Steps

1. Clone the project
2. In the root of the backend folder, install all the packages

   npm install

3. Start the project

   npm run start

4. In the root of the frontend folder, install all the packages

   npm install

5. Start the project

   npm run start

Visualization

The backend Swagger UI can be found here: http://localhost:9191/documentation

The UI dashboard can be found here:http://localhost:3000

Challenges Experienced

• Flux query Language in custom aggregation is not easy to understand
• Broken Broker. The MQTT Broker broke and was sometimes being misused.

Responses to Questions

Please see responses here