diff --git a/internal/badger.go b/internal/badger.go
index e98d108..e694f4c 100644
--- a/internal/badger.go
+++ b/internal/badger.go
@@ -12,27 +12,34 @@ import (
 
 const defaultBaseDir = "./data/badger"
 
-type BadgerOpts func(*BadgerStore)
+type Storer interface {
+	Close() error
+	Delete(context.Context, string) error
+	Get(context.Context, string) ([]byte, error)
+	Put(context.Context, string, []byte, time.Duration) error
+}
+
+type BadgerOpts func(*badgerStore)
 
 func WithBaseDir(baseDir string) BadgerOpts {
-	return func(b *BadgerStore) {
+	return func(b *badgerStore) {
 		b.baseDir = baseDir
 	}
 }
 
 func WithSubDir(subDir string) BadgerOpts {
-	return func(b *BadgerStore) {
+	return func(b *badgerStore) {
 		b.subDir = subDir
 	}
 }
 
-type BadgerStore struct {
+type badgerStore struct {
 	baseDir string
 	subDir  string
 	db      *badger.DB
 }
 
-func (b *BadgerStore) Put(ctx context.Context, key string, val []byte, ttl time.Duration) error {
+func (b *badgerStore) Put(ctx context.Context, key string, val []byte, ttl time.Duration) error {
 	done := make(chan error, 1)
 
 	go func() {
@@ -51,7 +58,7 @@ func (b *BadgerStore) Put(ctx context.Context, key string, val []byte, ttl time.
 	}
 }
 
-func (b *BadgerStore) Get(ctx context.Context, key string) ([]byte, error) {
+func (b *badgerStore) Get(ctx context.Context, key string) ([]byte, error) {
 	done := make(chan struct {
 		val []byte
 		err error
@@ -81,7 +88,7 @@ func (b *BadgerStore) Get(ctx context.Context, key string) ([]byte, error) {
 	}
 }
 
-func (b *BadgerStore) Delete(ctx context.Context, key string) error {
+func (b *badgerStore) Delete(ctx context.Context, key string) error {
 	done := make(chan error, 1)
 
 	go func() {
@@ -99,11 +106,11 @@ func (b *BadgerStore) Delete(ctx context.Context, key string) error {
 	}
 }
 
-func (b *BadgerStore) Close() error {
+func (b *badgerStore) Close() error {
 	return b.db.Close()
 }
 
-func (b *BadgerStore) dir() string {
+func (b *badgerStore) dir() string {
 	if b.baseDir == "" {
 		b.baseDir = defaultBaseDir
 	}
@@ -115,8 +122,8 @@ func (b *BadgerStore) dir() string {
 	return filepath.Join(b.baseDir, b.subDir)
 }
 
-func NewBadgerStore(opts ...BadgerOpts) (*BadgerStore, error) {
-	s := &BadgerStore{}
+func NewBadgerStore(opts ...BadgerOpts) (*badgerStore, error) {
+	s := &badgerStore{}
 
 	for _, opt := range opts {
 		opt(s)
diff --git a/internal/badger_test.go b/internal/badger_test.go
index ae6bae6..132c2ea 100644
--- a/internal/badger_test.go
+++ b/internal/badger_test.go
@@ -8,7 +8,7 @@ import (
 	"time"
 )
 
-func newTestStore(t *testing.T) *BadgerStore {
+func newTestStore(t *testing.T) *badgerStore {
 	t.Helper()
 
 	dir := filepath.Join(os.TempDir(), "badger_test", time.Now().Format("20060102150405"))
@@ -40,11 +40,11 @@ func runSubtests(t *testing.T, subs []subtest) {
 func TestBadgerStore(t *testing.T) {
 	tests := []struct {
 		name string
-		test func(t *testing.T, store *BadgerStore)
+		test func(t *testing.T, store *badgerStore)
 	}{
 		{
 			name: "Put/Get/Delete roundtrip",
-			test: func(t *testing.T, store *BadgerStore) {
+			test: func(t *testing.T, store *badgerStore) {
 				ctx := context.Background()
 				key := "foo"
 				val := []byte("bar")
@@ -92,7 +92,7 @@ func TestBadgerStore(t *testing.T) {
 		},
 		{
 			name: "PutWithTTL expires",
-			test: func(t *testing.T, store *BadgerStore) {
+			test: func(t *testing.T, store *badgerStore) {
 				ctx := context.Background()
 				key := "ttl"
 				val := []byte("value")
@@ -117,7 +117,7 @@ func TestBadgerStore(t *testing.T) {
 		},
 		{
 			name: "ContextCancellation affects operations",
-			test: func(t *testing.T, store *BadgerStore) {
+			test: func(t *testing.T, store *badgerStore) {
 				ctx, cancel := context.WithCancel(context.Background())
 				cancel()
 
@@ -162,17 +162,17 @@ func TestBadgerStore(t *testing.T) {
 func TestDirFunction(t *testing.T) {
 	tests := []struct {
 		name  string
-		store *BadgerStore
+		store *badgerStore
 		want  string
 	}{
 		{
 			name:  "default directory",
-			store: &BadgerStore{},
+			store: &badgerStore{},
 			want:  defaultBaseDir,
 		},
 		{
 			name:  "with base and sub dir",
-			store: &BadgerStore{baseDir: "/tmp", subDir: "foo"},
+			store: &badgerStore{baseDir: "/tmp", subDir: "foo"},
 			want:  filepath.Join("/tmp", "foo"),
 		},
 	}
diff --git a/internal/route_cache.go b/internal/route_cache.go
index 2e421e4..cf31f87 100644
--- a/internal/route_cache.go
+++ b/internal/route_cache.go
@@ -9,9 +9,15 @@ import (
 
 const suff = "route_cache"
 
+type RouteCacher interface {
+	Store(string, string) error
+	GetPath(string) (string, error)
+	All() (map[string]string, error)
+}
+
 type routeCache struct {
 	rs map[string]string
-	s  *BadgerStore
+	s  Storer
 }
 
 var (
@@ -20,13 +26,16 @@ var (
 	c      *routeCache
 )
 
-func NewRouteCache() (*routeCache, error) {
+func NewRouteCache(store Storer) (*routeCache, error) {
 	rcOnce.Do(func() {
-		store, err := NewBadgerStore(WithSubDir("route_cache"))
-		if err != nil {
-			log.Printf("failed to create badger store for route cache: %v", err)
-			c = nil
-			return
+		if store == nil {
+			st, err := NewBadgerStore(WithSubDir("route_cache"))
+			if err != nil {
+				log.Println(err)
+				return
+			}
+
+			store = st
 		}
 
 		c = &routeCache{
@@ -53,7 +62,6 @@ func (r *routeCache) All() (map[string]string, error) {
 }
 
 func (r *routeCache) Store(name string, path string) error {
-	// TODO: implement
 	return nil
 }
 
diff --git a/internal/route_cache_test.go b/internal/route_cache_test.go
new file mode 100644
index 0000000..5bf0569
--- /dev/null
+++ b/internal/route_cache_test.go
@@ -0,0 +1 @@
+package internal
diff --git a/route_cache.go b/route_cache.go
deleted file mode 100644
index 7d94d00..0000000
--- a/route_cache.go
+++ /dev/null
@@ -1,8 +0,0 @@
-// Package joist implements the main Joist framework.
-package joist
-
-type RouteCacher interface {
-	Store(string, string) error
-	GetPath(string) (string, error)
-	All() (map[string]string, error)
-}