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Kyushu – A self-hostable WASM sandbox for JavaScript workers
by le_chuck·Jun 7, 2026·87 points·39 comments
AI Analysis
●●SolidBig BrainShip It
Cloudflare Workers API without Cloudflare, compiled to a single WASM binary.
Strengths
- •Single binary deployment eliminates runtime dependencies entirely
- •WASM sandbox provides isolation without container overhead
- •Familiar fetch handler API reduces learning curve for Workers devs
Weaknesses
- •Early experiment warning signals API instability and breaking changes ahead
- •Self-hosted Workers runtimes already exist in various forms
Category
Target Audience
Backend developers, platform engineers wanting Cloudflare Workers compatibility
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Deno Deploy · Fastly Compute@Edge · Cloudflare Workers
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