snapshot of https://github.com/centrifugal/centrifugo.git (master, 2026-09-16; blobs > 131072B omitted)

internal/jwks/cache.go

@@ -0,0 +1,20 @@
+package jwks
+
+import (
+	"errors"
+)
+
+var (
+	// ErrCacheNotFound returned when cache value not found.
+	ErrCacheNotFound = errors.New("cache: value not found")
+)
+
+// Cache works with cache layer. The cacheKey is opaque to the cache and chosen by
+// the caller — Manager uses a composite of the resolved JWKS endpoint URL and the
+// JWT header kid so that keys cached from one trust domain (templated URL) cannot
+// satisfy lookups for another. See Manager.FetchKey.
+type Cache interface {
+	Add(cacheKey string, key *JWK) error
+	Get(cacheKey string) (*JWK, error)
+	Len() (int, error)
+}