> Fetch the index of every Tonbo docs page as Markdown at https://tonbo.dev/llms.txt

# Guarantees

Last updated 2 November 2026

> Machines are not open yet. These pages describe Machines as they will open; until then, a create answers [`region_not_offered`](https://tonbo.dev/docs/machines/troubleshooting/manage.md#region_not_offered) (422), “Machines are not offered in any region yet.”

Read these before you put data or users on a Machine: what Tonbo promises, one line per topic, each with a short page of its own.

- [Data guarantees](https://tonbo.dev/docs/machines/guarantees/data.md): A commit to the Machine’s database is durable once `synced()` resolves, whatever then happens to the Machine. Volumes are not offered yet, so nothing about them is a promise until they are.
- [Sleep guarantees](https://tonbo.dev/docs/machines/guarantees/sleep.md): Synced database commits are there after every wake; memory, processes and the Machine’s disks never are.
- [Request guarantees](https://tonbo.dev/docs/machines/guarantees/requests.md): A request reaches your program at most once, and a Machine is never put to sleep for being idle while one is in flight.
- [Isolation guarantees](https://tonbo.dev/docs/machines/guarantees/isolation.md): Each Machine has a virtual machine of its own: no other Machine can read its memory or disks.
- [Network guarantees](https://tonbo.dev/docs/machines/guarantees/network.md): Only HTTPS to its declared ports reaches a Machine, and it reaches the internet over IPv4.