> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Memory Backend • Rust AI Agent SDK

> MemoryBackend: Memory backend types

# MemoryBackend

> Defined in the [**specialized**](../modules/specialized) module.

<Badge color="orange">Rust AI Agent SDK</Badge>

Memory backend types

## Fields

| Name         | Type      | Description        |
| ------------ | --------- | ------------------ |
| `In`         | `variant` | -                  |
| `memory`     | `variant` | -                  |
| `storage`    | `variant` | -                  |
| `default`    | `variant` | In-memory storage  |
| `InMemory`   | `variant` | In-memory storage  |
| `SQLite`     | `variant` | -                  |
| `storage`    | `variant` | -                  |
| `Sqlite`     | `variant` | SQLite storage     |
| `PostgreSQL` | `variant` | -                  |
| `storage`    | `variant` | -                  |
| `Postgres`   | `variant` | PostgreSQL storage |
| `Redis`      | `variant` | -                  |
| `storage`    | `variant` | -                  |
| `Redis`      | `variant` | Redis storage      |
| `ChromaDB`   | `variant` | -                  |
| `storage`    | `variant` | -                  |
| `Chroma`     | `variant` | ChromaDB storage   |
| `Custom`     | `variant` | -                  |
| `backend`    | `variant` | -                  |
| `Custom`     | `variant` | Custom backend     |

## Source

<Card title="View on GitHub" icon="github" href="https://github.com/MervinPraison/PraisonAI/blob/main/src/praisonai-rust/praisonai/src/parity/specialized.rs">
  `praisonai/src/parity/specialized.rs` at line 0
</Card>

***

## Related Documentation

<CardGroup cols={2}>
  <Card title="Rust Memory" icon="database" href="/docs/rust/memory" />

  <Card title="Rust Sessions" icon="clock" href="/docs/rust/sessions" />

  <Card title="Rust Knowledge" icon="book" href="/docs/rust/knowledge" />
</CardGroup>