# Sandbox persistence

<Note>
Sandbox persistence is currently in public beta:
1. You'll need to install the [beta version of the SDKs](#1-installing-the-beta-version-of-the-sdks).
1. Consider [some limitations](#limitations-while-in-beta).
1. The persistence is free for all users during the beta.
</Note>

The sandbox persistence allows you to pause your sandbox and resume it later from the same state it was in when you paused it.

This includes not only state of the sandbox's filesystem but also the sandbox's memory. This means all running processes, loaded variables, data, etc.

## 1. Installing the beta version of the SDKs
To use the sandbox persistence, you need to install the beta version of the SDKs.

<CodeGroup>
```bash {{ language: 'js' }}
npm i @e2b/code-interpreter@beta
#
# or use Core: https://github.com/e2b-dev/e2b
# npm i e2b@beta
#
# or use Desktop: https://github.com/e2b-dev/desktop
# npm i @e2b/desktop@beta
```

```bash {{ language: 'python' }}
pip install e2b-code-interpreter==1.0.4b
#
# or use Core: https://github.com/e2b-dev/e2b
# pip install e2b==1.1.0.b
#
# or use Desktop: https://github.com/e2b-dev/desktop
# pip install e2b-desktop==1.1.0.b
```
</CodeGroup>


## 2. Pausing sandbox
When you pause a sandbox, both the sandbox's filesystem and memory state will be saved. This includes all the files in the sandbox's filesystem and all the running processes, loaded variables, data, etc.

<CodeGroup>
```js
import { Sandbox } from '@e2b/code-interpreter'
// or use Core: https://github.com/e2b-dev/e2b
// import { Sandbox } from 'e2b'
//
// or use Desktop: https://github.com/e2b-dev/desktop
// import { Sandbox } from '@e2b/desktop'

const sbx = await Sandbox.create()
console.log('Sandbox created', sbx.sandboxId)

// Pause the sandbox
// You can save the sandbox ID in your database
// to resume the sandbox later
const sandboxId = await sbx.pause() // $HighlightLine
console.log('Sandbox paused', sandboxId) // $HighlightLine
```
```python
from e2b_code_interpreter import Sandbox
# or use Core: https://github.com/e2b-dev/e2b
# from e2b import Sandbox
#
# or use Desktop: https://github.com/e2b-dev/desktop
# from e2b_desktop import Sandbox

sbx = Sandbox()
print('Sandbox created', sbx.sandbox_id)

# Pause the sandbox
# You can save the sandbox ID in your database
# to resume the sandbox later
sandbox_id = sbx.pause() # $HighlightLine
print('Sandbox paused', sandbox_id) # $HighlightLine
```
</CodeGroup>


## 3. Resuming sandbox
When you resume a sandbox, it will be in the same state it was in when you paused it.
This means that all the files in the sandbox's filesystem will be restored and all the running processes, loaded variables, data, etc. will be restored.

<CodeGroup>
```js
import { Sandbox } from '@e2b/code-interpreter'
// or use Core: https://github.com/e2b-dev/e2b
// import { Sandbox } from 'e2b'
//
// or use Desktop: https://github.com/e2b-dev/desktop
// import { Sandbox } from '@e2b/desktop'

const sbx = await Sandbox.create()
console.log('Sandbox created', sbx.sandboxId)

// Pause the sandbox
// You can save the sandbox ID in your database
// to resume the sandbox later
const sandboxId = await sbx.pause()
console.log('Sandbox paused', sandboxId)

// Resume the sandbox from the same state
const sameSbx = await Sandbox.resume(sandboxId) // $HighlightLine
console.log('Sandbox resumed', sameSbx.sandboxId) // $HighlightLine
```
```python
from e2b import Sandbox
# or use Core: https://github.com/e2b-dev/e2b
# from e2b import Sandbox
#
# or use Desktop: https://github.com/e2b-dev/desktop
# from e2b_desktop import Sandbox

sbx = Sandbox()
print('Sandbox created', sbx.sandbox_id)

# Pause the sandbox
# You can save the sandbox ID in your database
# to resume the sandbox later
sandbox_id = sbx.pause()
print('Sandbox paused', sandbox_id)

# Resume the sandbox from the same state
same_sbx = Sandbox.resume(sandbox_id) # $HighlightLine
print('Sandbox resumed', same_sbx.sandbox_id) # $HighlightLine
```
</CodeGroup>

## Sandbox's timeout
When you resume a sandbox, the sandbox's timeout is reset to the default timeout of an E2B sandbox - 5 minutes.


You can pass a custom timeout to the `Sandbox.resume()` method like this:

<CodeGroup>
```js
import { Sandbox } from '@e2b/code-interpreter'
// or use Core: https://github.com/e2b-dev/e2b
// import { Sandbox } from 'e2b'
//
// or use Desktop: https://github.com/e2b-dev/desktop
// import { Sandbox } from '@e2b/desktop'

const sbx = await Sandbox.resume(sandboxId, { timeoutMs: 60 * 1000 }) // 60 seconds
```
```python
from e2b_code_interpreter import Sandbox
# or use Core: https://github.com/e2b-dev/e2b
# from e2b import Sandbox
#
# or use Desktop: https://github.com/e2b-dev/desktop
# from e2b_desktop import Sandbox

sbx = Sandbox.resume(sandbox_id, timeout=60) # 60 seconds
```
</CodeGroup>

## Network
If you have a service (for example a server) running inside your sandbox and you pause the sandbox, the service won't be accessible from the outside and all the clients will be disconnected.
If you resume the sandbox, the service will be accessible again but you need to connect clients again.


## Limitations while in beta
- It takes about 4 seconds per 1 GB RAM to pause the sandbox
- It takes about 1 second to resume the sandbox
- Sandbox can be paused up to 30 days
  - After 30 days, the data will be deleted and you will not be able to resume the sandbox. Trying to resume sandbox that was deleted or does not exist will result in the `NotFoundError` error in JavaScript SDK and `NotFoundException` exception in Python SDK
