Method exists

src/landppt/services/cache_service.py:103–111

Check if key exists in cache

(self, key: str)

            return False
    
    async def exists(self, key: str) -> bool:
        """Check if key exists in cache"""
        if not self._connected:
            return False
        try:
            return await self._client.exists(key) > 0
        except Exception as e:
            logger.error(f"Cache exists error: {e}")
            return False

    async def incr_with_ttl(self, key: str, ttl: int) -> Optional[int]:
        """