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21 lines
602 B
Python
21 lines
602 B
Python
import abc
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from typing import Optional, Tuple
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class Backend:
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@abc.abstractmethod
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async def get_with_ttl(self, key: str) -> Tuple[int, Optional[str]]:
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raise NotImplementedError
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@abc.abstractmethod
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async def get(self, key: str) -> Optional[str]:
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raise NotImplementedError
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@abc.abstractmethod
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async def set(self, key: str, value: str, expire: Optional[int] = None) -> None:
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raise NotImplementedError
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@abc.abstractmethod
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async def clear(self, namespace: Optional[str] = None, key: Optional[str] = None) -> int:
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raise NotImplementedError
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