AI Dev Tool: FastAPI Pydantic v2 (5uml)

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Preview Code

```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Boilerplate with PostgreSQL Vector Search Extension
#============================================================================================
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
from typing import List, Optional
import psycopg2
import psycopg2.extras
from psycopg2 import Error

# Define the FastAPI application
app = FastAPI()

# Define the Pydantic model for the data
class Data(BaseModel):
    id: int
    text: str

# Define the PostgreSQL connection settings
POSTGRES_HOST = "localhost"
POSTGRES_DB = "mydb"
POSTGRES_USER = "myuser"
POSTGRES_PASSWORD = "mypassword"

# Create a PostgreSQL connection pool
# ... full runnable version includes tests & documentation