Grade: 7

Bugs

  • No specific bugs present in the code snippet, but it heavily depends on a valid MONGODB_URI in the environment variables; if not set, it will cause a runtime error.

Optimizations

  • Consider making client connection closed gracefully or reusing it rather than establishing a new connection each time createConnection is called.
  • Add error handling for connection failures to manage potential exceptions and avoid application crashes.
  • Consider using a connection pool with a defined size or configuration options for improved performance in high-load scenarios, like using { useNewUrlParser: true, useUnifiedTopology: true }.

Good Points

  • Uses async/await for handling asynchronous connections, which is a clean and modern approach.
  • Follows a modular approach by encapsulating the creation of the MongoClient connection.

Summary

The code provides a clean and straightforward implementation for creating a connection with MongoDB using the MongoClient. It effectively leverages ES6 features like async/await for asynchronous operations. However, it lacks proper error handling and optimizations related to connection reuse and configuration tuning, which could be critical in a production environment.

Open source alternatives

  • Mongoose - An ODM (Object Data Modeling) library for MongoDB and Node.js that provides a higher-level API and additional features like schema validation.
  • Mongoist - A simpler, flexible Node.js library for working with MongoDB that simplifies callback and promise handling.