internal/

Package bounded provides a size-bounded, TTL-aware key→value map for the gateway's per-instance affinity records and its in-process shared-state store.

Package breaker implements a per-upstream circuit breaker: N consecutive failures open the circuit; a single probe is admitted after the half-open interval, and its outcome closes or re-opens the circuit.

Package cache is a small TTL cache with single-flight refresh, used for upstream list results.

Package doclint extracts the link graph from the repository's Markdown so a test can assert it resolves.

Package kubediscovery produces fold's discovery document from Kubernetes Services: list Services matching a label selector on an interval, map them to upstream entries via annotations, validate with fold's own config package, and serve {"upstreams": [...]} for the gateway's discovery.url to poll.

Package ratelimit implements a sliding-window request limiter.

Package state abstracts the gateway's shared runtime state — rate-limit windows, circuit-breaker state, and list caches — behind interfaces with two providers: in-process (default) and Redis (set REDIS_URL or server.redisUrl), which makes a fleet of gateway instances behave as one.

Package stdiobridge exposes a stdio MCP server over streamable HTTP.