musl libc
musl libc is a lightweight, fast, and standards-compliant C standard library implementation designed for Linux systems. It focuses on simplicity, correctness, and minimal resource usage, making it popular in embedded systems, containers, and static linking scenarios. Unlike glibc, it has a small footprint and is often used in Alpine Linux and other minimal distributions.
Developers should learn musl libc when building applications for resource-constrained environments like embedded devices, IoT, or lightweight containers where minimal size and fast startup are critical. It is also valuable for static linking to create portable binaries and for security-focused projects due to its simplicity and reduced attack surface compared to larger libc implementations.