Performance optimization is a crucial aspect of software development that directly impacts user experience, resource consumption, and scalability. While modern hardware can compensate for some inefficiencies, writing optimized code remains essential, especially for high-traffic apps, data-intensive systems, and mobile or embedded devices. In this post, we'll delve into fundamental performance optimization techniques every developer should understand, regardless of their tech stack. Understand Before Optimizing "Premature optimization is the root of all evil."—Donald Knuth. Before diving into optimizations, start by ensuring your code is correct and maintainable. Use profiling tools (like ...