starter code

internal/ratelimit/redis_adapter.go

@@ -0,0 +1,20 @@
+package ratelimit
+
+import (
+	"context"
+
+	"github.com/redis/go-redis/v9"
+)
+
+// GoRedis bridges *redis.Client to the ScriptRunner interface.
+//
+// Kept in its own file, and as thin as possible, because it is the one piece
+// here that cannot be exercised without a live Redis: everything in redis.go is
+// tested against a fake.
+type GoRedis struct {
+	Client *redis.Client
+}
+
+func (g GoRedis) Eval(ctx context.Context, script string, keys []string, args ...any) (any, error) {
+	return g.Client.Eval(ctx, script, keys, args...).Result()
+}