[KongchangAI]
Conceptcontent fingerprinting / 消息哈希检测

Content Fingerprinting

A technique that uses a hash function to generate a fixed-length digest of message content in order to detect repetitive behaviour. In multi-agent systems it replaces step counting by maintaining a sliding window of message hash frequencies to identify loop patterns, with O(1) time complexity per step.

Timeline (last 90 days)

Oct 17

A content fingerprint (hash) can only prove that a file 'changed', not that it 'changed for the worse', so it is suitable as a red flag to trigger manual review, not as an automatic judge of right and wrong.

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Oct 15

The fix the author adopted is: keep the ring buffer and add a fingerprint mechanism—compute a fingerprint for each payload (a composite hash of the body hash plus selected headers), maintain a "seen fingerprints" set, and when full, prioritize evicting entries with duplicate fingerprints, only touching unique events when there are no duplicates to evict.

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