MongoDB

Document based NoSQL database

db/mongodb.ts

import { MongoClient } from "mongodb"

const uri = process.env.MONGO_URI || "mongodb://mongo:27017/"

let client: MongoClient | undefined
let clientPromise: Promise<MongoClient> | undefined

if (process.env.NODE_ENV === "development") {
  if (!global._mongoClientPromise) {
    client = new MongoClient(uri)
    global._mongoClientPromise = client.connect()
  }
  clientPromise = global._mongoClientPromise
} else {
  client = new MongoClient(uri)
  clientPromise = client.connect()
}

export default clientPromise

MongoDB

I use MongoDB for my database, setting up a connection with MongoClient. Depending on the environment, it creates either a global connection promise for development or a regular one for production, exporting a promise that resolves to the connected MongoDB client. This connection is then imported into my Next.js API routes to interact with my MongoDB collections.

Reference