Udemy Fundamentals Of Backend Engineering Exclusive Work -

Opening a database connection requires a network handshake, authentication, and memory allocation on the database server. If an application opens a new connection for every single HTTP request, the database will quickly exhaust its file descriptors and crash. A connection pool maintains a warm cache of active connections that application threads can check out, use, and immediately return, drastically reducing latency. Conclusion: Engineering Over Coding

The magic behind Node.js and Redis.

Utilizing tools like JWT (JSON Web Tokens) and OAuth 2.0 to securely verify user identities and control permissions. udemy fundamentals of backend engineering exclusive