Safe Cloud Code Execution with Snapshots (Python Pre-Installed, Zero Wait)
Deno Sandbox lets you spin up isolated cloud VMs programmatically. With the snapshots feature, you can pre-install an entire environment once and boot it without waiting for installs every time after.
In this video I show you the snapshot workflow end to end:
→ Create a cloud volume and boot a sandbox
→ Install Python, and required packages and build tools
→ Snapshot the volume — your environment is now frozen and reusable
→ Boot fresh sandboxes from that snapshot instantly, with everything pre-installed
As a demo we run a live interactive Mandelbrot fractal explorer. An HTTP server deployed entirely inside the sandbox, the code never touching the host machine.
This is the foundation for safe execution of AI-generated code, user-submitted scripts, or any workload you want fully isolated and reproducible.
Chapters:
0:00 – Introduction
0:50 – Initialize a basic Deno project
1:40 – Setting up a Snapshot
3:25 – Booting from a Snapshot
Resources:
📂 Code: https://docs.deno.com/examples/snapsh...
🚀 Deno Deploy: https://console.deno.com
📦 Deno Sandbox SDK: https://jsr.io/@deno/sandbox
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