52 lines
1.3 KiB
Python
52 lines
1.3 KiB
Python
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from __future__ import annotations
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import time
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from collections import OrderedDict
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class TelegramDeduplicator:
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def __init__(self, max_size: int = 10000, ttl_seconds: int = 25560):
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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_seconds = ttl_seconds
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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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now = time.monotonic()
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self._evict_expired(now)
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if key in self._cache:
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return True
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self._cache[key] = now
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while len(self._cache) > self._max_size:
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self._cache.popitem(last=False)
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return False
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def mark_seen(self, key: str) -> None:
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if not key:
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return
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now = time.monotonic()
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self._evict_expired(now)
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self._cache[key] = now
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while len(self._cache) > self._max_size:
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self._cache.popitem(last=False)
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def reset(self) -> None:
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self._cache.clear()
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@property
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def ttl_seconds(self) -> int:
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return self._ttl_seconds
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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 _evict_expired(self, now: float) -> None:
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expired = [k for k, v in self._cache.items() if now - v > self._ttl_seconds]
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for k in expired:
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del self._cache[k]
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