{"version":"2.1.191","anchor":"cloud-session-history-prefetch","canonical_anchor":"cloud-session-history-prefetch","heading":"Cloud Session History Prefetch","tier":null,"area":null,"scope":null,"heads_up":null,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.191\/e\/cloud-session-history-prefetch","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.191","markdown":"### Cloud Session History Prefetch\n\nWhat changed: Background conversation-history prefetching is now active for CCR (cloud session relay) sessions. Claude Code proactively loads recent events for background sessions so that attaching to them feels instant.\n\n**Details**\n\n- Prefetch is keyed by CCR session ID, validated against the session ID format before proceeding.\n- Results are cached on disk under a `cc-history-prefetch-` key.\n- Gracefully degrades: gate failures, HTTP errors, and parse failures are all logged but do not block session attach.\n\n**Evidence**\n\nHistory prefetch system (search for `\"[historyPrefetch]\"`)"}