48 lines
1.1 KiB
Python
48 lines
1.1 KiB
Python
from __future__ import annotations
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import time
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from collections import OrderedDict
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class AliyunSmsDeduplicator:
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def __init__(self, max_size: int = 10000, ttl: int = 86400):
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self._cache: OrderedDict[str, float] = OrderedDict()
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self._max_size = max_size
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self._ttl = ttl
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@property
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def ttl_seconds(self) -> int:
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return self._ttl
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@property
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def max_entries(self) -> int:
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return self._max_size
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def is_duplicate(self, key: str) -> bool:
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if not key:
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return False
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self._gc()
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return key in self._cache
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def mark_seen(self, key: str):
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if not key:
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return
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self._gc()
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self._cache[key] = time.time()
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self._evict_oldest()
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def reset(self):
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self._cache.clear()
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def _gc(self):
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now = time.time()
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expired = [k for k, ts in self._cache.items() if now - ts > self._ttl]
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for k in expired:
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del self._cache[k]
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def _evict_oldest(self):
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while len(self._cache) > self._max_size:
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self._cache.popitem(last=False)
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