<ul><li>In 2025, many developers are still running powerful multi-core servers with Node.js applications on just a single CPU core due to overlooking Node's clustering capabilities.</li><li>Node.js uses a single-threaded event loop model, limiting applications to utilize only one CPU core, leading to inefficient resource utilization on multi-core servers.</li><li>The Node.js cluster module allows for creating worker processes to distribute the workload across all available CPU cores, offering a simple and efficient way to optimize performance.</li><li>Implementing clustering in Node.js with the cluster module in under 20 lines of code can detect CPU cores, spawn worker processes, and automatically restart dead workers, enhancing performance and resource utilization.</li></ul>

Node.js Performance Optimization : Cluster Module

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