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

# AsyncPostgresStorage

> Async PostgreSQL storage for production systems

## Overview

`AsyncPostgresStorage` provides an asynchronous PostgreSQL-based storage backend using SQLAlchemy with asyncpg. Ideal for production deployments, multi-node systems, and applications requiring ACID compliance with async support.

## Install

<Note>
  Install the PostgreSQL storage optional dependency group:

  ```bash theme={null}
  uv pip install "upsonic[postgres-storage]"
  ```
</Note>

## Basic Usage

```python theme={null}
import asyncio
from upsonic import Agent, Task
from upsonic.storage.memory import Memory
from upsonic.storage.postgres import AsyncPostgresStorage

async def main():
    storage = AsyncPostgresStorage(
        db_url="postgresql+asyncpg://user:password@localhost:5432/mydb"
    )

    memory = Memory(
        storage=storage,
        session_id="session_001",
        user_id="user_123",
        full_session_memory=True,
        summary_memory=True,
        user_analysis_memory=True,
        model="anthropic/claude-sonnet-4-5"
    )

    agent = Agent("anthropic/claude-sonnet-4-5", memory=memory)

    result1 = await agent.do_async(Task("My name is Alice"))
    result2 = await agent.do_async(Task("What's my name?"))
    print(result2)  # "Your name is Alice"

asyncio.run(main())
```

## Parameters

| Parameter | Type | Default | Description |
| - | - | - | - |
| `db_url` | `str` | `None` | PostgreSQL connection URL (e.g., `postgresql+asyncpg://user:pass@host/db`) |
| `db_engine` | `AsyncEngine` | `None` | Pre-configured SQLAlchemy AsyncEngine |
| `db_schema` | `str` | `"public"` | PostgreSQL schema to use |
| `session_table` | `str` | `None` | Custom name for the session table |
| `user_memory_table` | `str` | `None` | Custom name for the user memory table |
| `knowledge_table` | `str` | `None` | Custom name for the knowledge registry table (used by KnowledgeBase) |
| `create_schema` | `bool` | `True` | Whether to create the schema if it doesn't exist |
| `id` | `str` | `None` | Unique identifier for this storage instance |

<Note>
  Connection pool is automatically configured with `pool_pre_ping=True` and `pool_recycle=3600` for robust connection handling.
</Note>


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