sticter golangci config, fix discovered issues

backend/_example/memory_store/accessor/admin.go

@@ -75,7 +75,7 @@ func (m *MemAdmin) OnEvent(siteID string, ev admin.EventType) error {
 		return errors.Errorf("site %s not found", siteID)
 	}
 	if ev == admin.EvCreate {
-		resp.CountCreated += 1 // not a good idea, just for demo
+		resp.CountCreated++ // not a good idea, just for demo
 		m.data[siteID] = resp
 	}
 	return nil

backend/_example/memory_store/accessor/image.go

@@ -33,6 +33,7 @@ func NewMemImageStore() *MemImage {
 	}
 }
 
+// Save stores image with passed id to staging
 func (m *MemImage) Save(id string, img []byte) error {
 	m.Lock()
 	m.imagesStaging[id] = img
@@ -42,6 +43,7 @@ func (m *MemImage) Save(id string, img []byte) error {
 	return nil
 }
 
+// Load image by ID
 func (m *MemImage) Load(id string) ([]byte, error) {
 	m.RLock()
 	img, ok := m.images[id]
@@ -55,6 +57,7 @@ func (m *MemImage) Load(id string) ([]byte, error) {
 	return img, nil
 }
 
+// Commit moves image from staging to permanent
 func (m *MemImage) Commit(id string) error {
 	m.RLock()
 	img, ok := m.imagesStaging[id]
@@ -70,6 +73,7 @@ func (m *MemImage) Commit(id string) error {
 	return nil
 }
 
+// Cleanup runs removal loop for old images on staging
 func (m *MemImage) Cleanup(_ context.Context, ttl time.Duration) error {
 	var idsToRemove []string
 

backend/_example/memory_store/go.mod

@@ -6,7 +6,6 @@ require (
 	github.com/go-pkgz/jrpc v0.1.0
 	github.com/go-pkgz/lgr v0.7.0
 	github.com/pkg/errors v0.9.1
-	github.com/rs/xid v1.2.1
 	github.com/stretchr/testify v1.5.1
 	github.com/umputun/go-flags v1.5.1
 	github.com/umputun/remark/backend v1.5.0