dtzp555-max/ocp v3.13.0

on GitHub

v3.13.0 — 2026-05-07

Features (cache layer hardening)

• Per-key cache isolation (D1) — the cache key now includes the API key id, so distinct keys never share cache entries. Anonymous/unauthenticated callers share one anon pool. Hash format upgraded to v2; legacy v1-format rows orphan and are reaped by the existing TTL cleanup interval (no migration script).
• cache_control bypass (D2) — when a request carries an Anthropic cache_control annotation (top-level or nested in a content array), OCP skips its own cache entirely. The caller is using Anthropic-side prompt caching deliberately, and OCP must not interfere. A cache_skipped{reason: cache_control_present} log line is emitted on bypass.
• Chunked stream replay (D3) — when a streaming request hits the cache, the cached content is now emitted as multiple SSE chunks (80 codepoints/chunk, codepoint-safe via Array.from()) instead of a single large delta. Multibyte characters (CJK / emoji) stay intact.
• Singleflight stampede protection (D4) — concurrent identical cache-miss requests now share one upstream cli.js spawn instead of spawning N processes. Followers receive byte-identical responses to what the leader returns. All-or-nothing failure semantics: if the leader errors, all followers receive the same error. Streaming-path singleflight is explicitly out of scope (TODO left for follow-up).

Behavior changes

• /cache/stats response now includes additive fields inflight and requesters (current in-flight singleflight entries and total waiting callers). Existing fields entries, totalHits, sizeBytes are preserved unchanged.

Governance

• New ADR docs/adr/0005-no-multi-provider.md: OCP stays single-provider (Anthropic via cli.js spawn). Multi-provider gateway refactor explicitly out of scope; cache improvements are explicitly in scope.
• Design spec for this release: docs/superpowers/specs/2026-05-07-cache-upgrade-design.md.

No new env vars / no public API surface change

This release adds no new env vars or endpoints. All four improvements are internal correctness/concurrency upgrades to the existing CLAUDE_CACHE_TTL-gated cache layer. No client-observable wire shape change.