chore: custom error

internal/filesystem/cache.go

@@ -14,7 +14,7 @@ const keyStat = "webdav:stat:"
 // CachedClient wraps a FileSystem implementation with Valkey caching.
 type CachedClient struct {
 	impl        FS
-	client      valkey.Client
+	cache       valkey.Client
 	ttl         time.Duration
 	hits        atomic.Int64
 	misses      atomic.Int64
@@ -25,9 +25,9 @@ type CachedClient struct {
 // NewCachedClient creates a new CachedClient.
 func NewCachedClient(impl FS, client valkey.Client, refreshtime time.Duration) *CachedClient {
 	c := &CachedClient{
-		impl:   impl,
-		client: client,
-		ttl:    refreshtime * 5,
+		impl:  impl,
+		cache: client,
+		ttl:   refreshtime * 5,
 	}
 
 	go func() {
@@ -50,7 +50,7 @@ func (c *CachedClient) revalidate(ctx context.Context) {
 func (c *CachedClient) scanAndProcess(ctx context.Context, match string, process func(key string) error) {
 	cursor := uint64(0)
 	for {
-		res, err := c.client.Do(ctx, c.client.B().Scan().Cursor(cursor).Match(match).Build()).AsScanEntry()
+		res, err := c.cache.Do(ctx, c.cache.B().Scan().Cursor(cursor).Match(match).Build()).AsScanEntry()
 		if err != nil {
 			slog.Error("scan failed", "match", match, "err", err)
 			return