Only update unread count when it has changed

HPUT is not a Redis command

cmd/eksterd/hubbackend.go

@@ -191,7 +191,7 @@ func (h *hubIncomingBackend) Feeds() ([]Feed, error) {
 			parts := strings.Split(feedKey, ":")
 			if len(parts) == 2 {
 				feed.ID, _ = strconv.ParseInt(parts[1], 10, 64)
-				_, err = conn.Do("HPUT", feedKey, "id", feed.ID)
+				_, err = conn.Do("HSET", feedKey, "id", feed.ID)
 				if err != nil {
 					log.Printf("could not save id for %s: %v", feedKey, err)
 				}
@@ -208,7 +208,7 @@ func (h *hubIncomingBackend) Feeds() ([]Feed, error) {
 			}
 
 			feed.Callback = fmt.Sprintf("%s/incoming/%d", h.baseURL, feed.ID)
-			_, err = conn.Do("HPUT", feedKey, "callback", feed.Callback)
+			_, err = conn.Do("HSET", feedKey, "callback", feed.Callback)
 			if err != nil {
 				log.Printf("could not save id for %s: %v", feedKey, err)
 			}

cmd/eksterd/memory.go

@@ -661,10 +661,14 @@ func (b *memoryBackend) updateChannelUnreadCount(channel string) error {
 			return err
 		}
 		defer b.save()
+
+		currentCount := c.Unread.UnreadCount
 		c.Unread = microsub.Unread{Type: microsub.UnreadCount, UnreadCount: unread}
 
 		// Sent message to Server-Sent-Events
+		if currentCount != unread {
 			b.broker.Notifier <- sse.Message{Event: "new item in channel", Object: c}
+		}
 
 		b.lock.Lock()
 		b.Channels[channel] = c