42 lines
1.1 KiB
Python
42 lines
1.1 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 SynologyChatDedupe:
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def __init__(self, ttl_seconds: int = 300, max_entries: int = 10000):
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self._ttl_seconds = ttl_seconds
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self._max_entries = max_entries
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self._store: OrderedDict[str, float] = OrderedDict()
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def is_duplicate(self, key: str) -> bool:
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now = time.monotonic()
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if key in self._store:
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ts = self._store[key]
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if now - ts < self._ttl_seconds:
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return True
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del self._store[key]
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return False
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def mark_seen(self, key: str) -> None:
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now = time.monotonic()
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if key in self._store:
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self._store.move_to_end(key)
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self._store[key] = now
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self._evict()
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def _evict(self) -> None:
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while len(self._store) > self._max_entries:
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self._store.popitem(last=False)
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def reset(self) -> None:
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self._store.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_entries
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