SysInt_Activity_Microservices

Activity for System Integrations Subject

This project demonstrates the integration of GraphQL with microservices, utilizing Apollo Server and Prisma as an ORM.

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📌 Running the Server

Navigate to the server directory and run the following command to start the service:

node index.js

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🔍 Reflection

Database migrations help manage changes to a database's structure over time. They ensure data integrity and allow rollbacks if issues arise.

GraphQL vs. REST

• GraphQL enables clients to request specific data with a single query, reducing over-fetching and under-fetching.
• REST typically requires multiple endpoints for different resources, making data retrieval less flexible.

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⚡ Initialization & Setup

Follow these steps to set up the project:

1️⃣ Create and Navigate to the Service Directory

mkdir service-name
cd service-name

2️⃣ Initialize the Project

npm init -y

3️⃣ Install Dependencies

npm install apollo-server graphql graphql-subscriptions

4️⃣ Initialize Prisma (Using SQLite)

npx prisma init --datasource-provider sqlite
npm install @prisma/client

5️⃣ Define the Database Schema

Locate the schema.prisma file and define your model:

model Book {
    id          Int     @id @default(autoincrement())
    title       String
    description String
}

6️⃣ Run Database Migration

npx prisma generate
npx prisma migrate dev --name init

7️⃣ Create index.js

This file contains the GraphQL server logic.
Refer to the index.js implementation from the other services as a reference.

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Frontend

• npm create vite@latest frontend --template react
• cd frontend
• npm install @apollo/client graphql
• npm run dev

🎯 Notes

• Ensure Prisma is correctly set up before running migrations.
• The Apollo Server is used to handle GraphQL queries and mutations.
• You can explore existing services to understand the GraphQL schema and structure.

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💡 Now, you're all set to develop and expand your GraphQL microservices! 🚀