#performance Development Tutorials & Tips | Roast Dev

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🚀 15 SQL Query Optimization Techniques for Blazing Fast Performance

Efficient SQL queries are the backbone of high-performing applications. Poorly optimized queries can lead to slow response times, high server loads, and poor user experiences. Here are some essential ...

04.04.2025 0 Read More

Por que seu `parallelStream()` pode estar mentindo (e como corrigir)

Quando usamos .parallelStream() no Java, esperamos que tudo rode em paralelo — rápido, eficiente, multicore. Mas às vezes, mesmo usando .parallelStream(), tudo roda em uma única thread. Cadê o p...

04.04.2025 0 Read More

How to Scale a Node.js Application for High Performance

Scaling a Node.js application for high performance involves implementing techniques that ensure your app remains fast, reliable, and responsive under heavy traffic. This includes using clustering to l...

05.04.2025 0 Read More

Optimizing UPDATE of millions of rows easily

The other day, we received a file containing buildings with their number of dwelling and a matching identifier important to us, weighted by a score indicating the quality of the matching. The idea is ...

05.04.2025 0 Read More

I built a small Windows app to extract links from PDFs and websites – looking for feedback!

Hey everyone 👋I'm a student passionate about cybersecurity and web development, and I just released a lightweight Windows tool called LinkInspector.It's a simple app that helps you:✅ Extract all ...

06.04.2025 0 Read More

Why Your `.parallelStream()` Might Not Be Parallel at All

When we use .parallelStream() in Java, we expect parallelism to magically kick in — blazing fast execution across multiple threads. But sometimes, even with .parallelStream(), everything still runs ...

06.04.2025 0 Read More

Grafana K6: Load testing for awareness of your infrastructure

The versatile open-source tool for robust load testing. Learn how to stress-test your systems and build scalable applications that can handle real-world traffic demands. What is Grafana K6? Gr...

07.04.2025 0 Read More

React Performance: Small Fixes That Made a Big Impact

When you're building the first version of a React app, performance usually isn’t your top concern. Things feel snappy. It’s just React, right?Then, the app grows. New features get added, state bec...

07.04.2025 0 Read More

Debounced Search with Client-side Filtering: A Lightweight Optimization for Large Lists

The ProblemRendering large datasets — like 1500+ city names in an autocomplete — can seriously affect performance. Without any optimization, each keystroke causes filtering + re-rendering, leading...

07.04.2025 0 Read More

Mastering useCallback in React: When and Why to Use It

🔴▶️ Prefer watching instead? I break all of this down with real examples and a live demo in my YouTube video. 👉 Watch the full video on useCallback here (Don’t forget to like &amp...

07.04.2025 0 Read More

🚀 15 SQL Query Optimization Techniques for Blazing Fast Performance

Por que seu `parallelStream()` pode estar mentindo (e como corrigir)

How to Scale a Node.js Application for High Performance

Optimizing UPDATE of millions of rows easily

I built a small Windows app to extract links from PDFs and websites – looking for feedback!

Why Your `.parallelStream()` Might Not Be Parallel at All

Grafana K6: Load testing for awareness of your infrastructure

React Performance: Small Fixes That Made a Big Impact

Debounced Search with Client-side Filtering: A Lightweight Optimization for Large Lists

Mastering useCallback in React: When and Why to Use It

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