https://github.com/jpb06/nest-prisma-monorepo

Multiple databases POC built with nestjs & prisma
https://github.com/jpb06/nest-prisma-monorepo

monorepo multiple-databases nestjs prisma proof-of-concept rxjs

Last synced: 7 months ago
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Multiple databases POC built with nestjs & prisma

• Host: GitHub
• URL: https://github.com/jpb06/nest-prisma-monorepo
• Owner: jpb06
• Created: 2021-11-17T21:29:47.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2024-12-01T15:18:55.000Z (over 1 year ago)
• Last Synced: 2025-04-08T01:01:43.874Z (about 1 year ago)
• Topics: monorepo, multiple-databases, nestjs, prisma, proof-of-concept, rxjs
• Language: TypeScript
• Homepage:
• Size: 512 KB
• Stars: 38
• Watchers: 2
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# nest-prisma-monorepo

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Here is the POC of a monorepo built with nestjs and prisma used to expose several apps, relying on several databases.

                


## ⚡ Requirements

You will need the following to use this POC :

| Item                                                                                                           | Description                                             | Documentation                        |

| -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------- | ------------------------------------ |

|  nodejs | Duh!                                                    |              |

|  Docker | we will use docker to launch a postgres instance        |  |

|  bun          | We will use bun as the package manager for this project |                 |

## ⚡ How to start

### 🔶 Firstof, let's start our database using docker

You may need to give execution permission to the entry point script file, that is responsible for creating our three databases:

```bash

chmod +x docker/pg-init-scripts/create-multiple-db.sh

```

Let's then use docker compose :

```bash

bun docker

```

### 🔶 Then we can migrate our schemas and seed the databases

```bash

bun dev:db

```

### 🔶 Launching our backends in dev mode

```bash

# Hiking app (port 5001)

bun dev hiking-app

# Projects app (port 5002)

bun dev projects-app

```

### 🔶 Accessing apps swaggers

Now we can access the swaggers of our apps using the following urls:

- [Hiking app](http://localhost:5001/api)

- [Projects app](http://localhost:5002/api)

### 🔶 Building our apps for production

```bash

bun run build

```

## ⚡ Project structure

### 🎉 Apps

| Database        | Description                                                                                                                                                  |

| --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------ |

| 🚀 Hiking app   | This kiking app allows users to check and join hiking groups planning to do a walk on some trail. This app owns a database but also uses the Users database. |

| 🚀 Projects app | This projects app allows users to check contributions made to repositories. This app owns a database and also uses the Users database.                       |

### 🧩 Libs

| Database      | Description                                                                   |

| ------------- | ----------------------------------------------------------------------------- |

| 🧩 Boostraper | The code necessary to create an app is defined there and shared between apps. |

| 🧩 Databases  | The base prisma services are defined on this shared module.                   |

| 🧩 Decorators | Decorators used in all our apps.                                              |

| 🧩 Filters    | Filters used in all our apps.                                                 |

| 🧩 Pipes      | Pipes used in all our apps.                                                   |

| 🧩 Rxjs       | Rxjs helpers.                                                                 |

| 🧩 Tests      | Test related code.                                                            |

## ⚡ Data model

We have three databases:

| Database    | Description                                                                                                             |

| ----------- | ----------------------------------------------------------------------------------------------------------------------- |

| 👨 Users    | Contains our users (duh). This database will serve as the single base of truth for everything user related in our apps. |

| 🏔️ Hiking   | Database dedicated to the hiking backend service.                                                                       |

| 🧳 Projects | Database dedicated to the projects backend service.                                                                     |

Let's take a look at the schema:

![Diagram](./documentation/db-diagram.png)