internal/

Package extract provides a shared token/value extractor for middleware that reads values from request headers, query parameters, cookies, form fields, or path parameters using a "source:name[:prefix]" lookup string format.

Package fakememcached is a tiny text-protocol fake memcached server for middleware store-adapter tests.

Package fakeredis is a tiny RESP2 fake server used by celeris middleware tests that adapt onto the native driver/redis client.

Package fnv1a provides a fast, allocation-free FNV-1a string hash and power-of-two rounding for sharded data structures.

Package randutil provides a shared, buffered cryptographic random token generator that amortizes crypto/rand syscalls across middleware packages.

Package sf provides a tiny generic singleflight-style coalescer used internally by middlewares that need to dedupe concurrent in-flight producers for the same key (middleware/cache — and, potentially, future adapters).

Package testutil provides test helpers and assertions for middleware tests.