feat(cache): ajouter cache sémantique SimHash avec distance de Hamming#147
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Destynova2 merged 2 commits intodevelopfrom Apr 11, 2026
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feat(cache): ajouter cache sémantique SimHash avec distance de Hamming#147Destynova2 merged 2 commits intodevelopfrom
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Adds an in-memory SimHash-based semantic cache layer that detects near-duplicate prompts via 64-bit fingerprints and Hamming distance (default threshold ≤ 3 bits). The fuzzy layer is consulted before the exact SHA-256 cache to improve hit rates for rephrased requests. - src/cache/simhash.rs: normalize, compute, hamming_distance, SimHashCache - Integrated into ResponseCache via get_with_simhash / put_with_simhash - 16 new unit tests covering normalization, hashing, distance, and cache ops Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…tion - Supprimer le tri lexicographique des tokens qui detruisait le sens semantique (ex: "translate English to French" = "translate French to English"). L'ordre est desormais preserve. - Hasher chaque token avec sa position (hash_token_at) pour rendre le SimHash sensible a l'ordre des mots. - Remplacer RwLock<HashMap> par moka::sync::Cache avec max_capacity et TTL built-in, alignant le cycle de vie sur le cache exact. - Adapter response_cache.rs pour passer capacity/TTL au constructeur. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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