Wisp: A tiny, dependency-free Go static file server with Docker image of about 3 MB

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Wisp, originally codenamed LWS (Lightweight Web Server), is a small static file server written in Go using only the standard library. Its author built it because existing web servers are either too large and complex or too limited for modern deployments. The project's Scratch container image is roughly 3 MB, starts almost instantly, and has no runtime dependencies. Wisp includes features such as confined file serving, hidden-file protection, precompressed content support, SPA fallback routing, built-in Prometheus metrics on a separate port, and Kubernetes health probes. Its source code is available on GitHub, with setup driven by a simple JSON configuration file.

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