Mongoose

• Auto index creation in DocumentDB.
• An array of discriminators.
• A nested document with different schemas (nested discriminator).
• One to many.
• Transactions.

Bulk Create

export type PostDocument = HydratedDocument<Post>;

@Schema({ timestamps: true, autoCreate: true })
export class Post {
  @Prop({
    type: String,
    required: true,
  })
  title: string;
}

@Injectable()
export class AppService {
  constructor(
    @InjectModel(Post.name)
    private readonly postModel: Model<PostDocument>
  ) {}

  async someMethod() {
    const res = await this.postModel.insertMany([
      { title: randomUUID() },
      { title: randomUUID() },
    ]);
    console.log("=================", Array.isArray(res)); // true
    console.log("=================", res.length); // 2
    console.log("=================", res[0].title); // 3604b886-c1ea-47cd-93d2-111fa3d1dcb9
  }
}