# Storage

### Persistence in memory

All persistent objects remain in the world for the entire lifetime of the replication server. But what happens when the replication server is restarted or goes offline?

### Persistence Client

Persistence Client is a special utility that runs alongside the replication server and records the state of the world and saves it to physical storage. If the replication server goes offline, the Persistence Client will backup the entire state of the world.

{% hint style="info" %}
The Persistence Client will be available as part of the **coherence** online services in a future release. Please contact our [developer relations team](mailto:devrel@coherence.io) for more information.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.coherence.io/0.5.2/persistence/storage.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.