backend/app/config.py

from pydantic_settings import BaseSettings
from functools import lru_cache

class Settings(BaseSettings):
    API_KEY: str
    Groq_api_key: str
    
    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"
        case_sensitive = True

@lru_cache()
def get_settings():
    return Settings()