@suuumans

Scaling and Performance Engineering: Finding the Real Bottleneck

Jan 23 · 5 min read · Performance is the efficiency of a single request; Scalability is the system’s ability to maintain that efficiency as volume increases. It is a common mistake to conflate performance and scalability. A server that responds in 10ms is performant. A sy...

Backend Security: Knowing Where Trust Ends

Jan 22 · 4 min read · In backend engineering, one idea sits underneath almost every security decision:the trust boundary. The frontend, whether it’s a web app, a mobile app, or a third-party script, runs in an environment you do not control. Anyone can modify it. Anyone c...

Graceful Shutdown: Letting Systems Stop Without Breaking Things

Jan 21 · 4 min read · We spend most of our time thinking about systems while they’re alive. How they handle requests. How they scale. How they recover from failure. Very little time is spent thinking about what happens when they stop. That’s a mistake. Because backend sys...

Observability: Turning On the Lights

Jan 20 · 4 min read · When you are coding on your laptop, debugging is easy. You have your terminal right there, and if something breaks, the error message pops up immediately. In a production backend, your code is running on a server thousands of miles away. It’s talking...

Task Queues and Background Jobs: The Art of Doing Nothing (Right Now)

Jan 19 · 4 min read · Imagine you’re at a busy coffee shop. You walk up to the counter, order a complicated latte, and the cashier says: “Stay right here. I’m going to go to the back, roast the beans, milk the cow, and brew this. No one else can order until I’m done.” You...