Modal: Scale to a Million Sandboxes in Seconds
charles_irl · x · 2026-07-17
Modal introduces their core system architecture and how they scale sandboxes to 1 million concurrent in seconds.
The article highlights:
- They focus not just on the sandbox itself, but on the entire infrastructure running agents inside sandboxes.
- The key challenge: stable isolation, scheduling, fast startup, and massive concurrency to support agent workflows.
- This is a detailed engineering architecture post for those interested in agent infrastructure, runtime, and scaling design.
Related event: Modal Enables Instant Scaling to One Million Concurrent AI Sandboxes(3 posts)→
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