{"version":"2.1.304","anchor":"prompt-cache-hash-now-streams-blocks-into-the-hash-increment","canonical_anchor":"prompt-cache-hash-now-streams-blocks-into-the-hash-increment","heading":"Prompt cache check builds its fingerprint piece by piece","tier":"internal","area":"Elsewhere","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.304\/e\/prompt-cache-hash-now-streams-blocks-into-the-hash-increment","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.304","markdown":"### Prompt cache check builds its fingerprint piece by piece\n\nClaude Code's check for prompt cache changes now builds its fingerprint one piece at a time instead of all at once\n\n**What**\n\nClaude Code reuses parts of earlier requests through the prompt cache, and it keeps a short fingerprint of each request to spot when the cache will no longer match. It now builds that fingerprint one piece at a time instead of joining everything into one long text first.\n\n**Why**\n\nThis is an internal change and may have no visible effect.\n\n- Area: Elsewhere\n- Tier: Under the hood\n- Useful: 1\/5\n- Signal: 0\/5\n- Scope: individual\n- Heads-up: no"}