diff --git a/poller.go b/poller.go
index 7f5452f..7569278 100644
--- a/poller.go
+++ b/poller.go
@@ -32,8 +32,7 @@ func newPoller(rdb *rdb, avgInterval time.Duration, zsets []string) *poller {
 }
 
 func (p *poller) terminate() {
-	// send a signal to the manager goroutine to stop
-	// processing tasks from the queue.
+	// Signal the poller goroutine to stop polling.
 	p.done <- struct{}{}
 }
 
@@ -47,29 +46,27 @@ func (p *poller) start() {
 				fmt.Println("------------------------------------")
 				return
 			default:
-				p.enqueue()
+				p.exec()
 				time.Sleep(p.avgInterval)
 			}
 		}
 	}()
 }
 
-func (p *poller) enqueue() {
+func (p *poller) exec() {
 	for _, zset := range p.zsets {
 		// Get next items in the queue with scores (time to execute) <= now.
 		now := time.Now().Unix()
-		fmt.Printf("[DEBUG] polling ZSET %q\n", zset)
-		msgs, err := p.rdb.zRangeByScore(zset,
-			&redis.ZRangeBy{Min: "-inf", Max: strconv.Itoa(int(now))})
+		msgs, err := p.rdb.zRangeByScore(zset, &redis.ZRangeBy{Min: "-inf", Max: strconv.Itoa(int(now))})
 		if err != nil {
 			log.Printf("radis command ZRANGEBYSCORE failed: %v\n", err)
 			continue
 		}
+		fmt.Printf("[DEBUG] got %d tasks from %q\n", len(msgs), zset)
 
 		for _, m := range msgs {
 			if err := p.rdb.move(zset, m); err != nil {
-				log.Printf("could not move task %+v to queue %q: %v",
-					m, m.Queue, err)
+				log.Printf("could not move task %+v to queue %q: %v", m, m.Queue, err)
 				continue
 			}
 		}
diff --git a/processor.go b/processor.go
index cabf37d..05a9ffe 100644
--- a/processor.go
+++ b/processor.go
@@ -31,8 +31,7 @@ func newProcessor(rdb *rdb, numWorkers int, handler TaskHandler) *processor {
 }
 
 func (p *processor) terminate() {
-	// send a signal to the processor goroutine to stop
-	// processing tasks from the queue.
+	// Signal he processor goroutine to stop processing tasks from the queue.
 	p.done <- struct{}{}
 
 	fmt.Println("--- Waiting for all workers to finish ---")
diff --git a/rdb.go b/rdb.go
index 4492a0e..33136b0 100644
--- a/rdb.go
+++ b/rdb.go
@@ -67,12 +67,12 @@ func (r *rdb) bpop(timeout time.Duration, keys ...string) (*taskMessage, error)
 		return nil, errQueuePopTimeout
 	}
 	q, data := res[0], res[1]
-	fmt.Printf("perform task %v from %s\n", data, q)
 	var msg taskMessage
 	err = json.Unmarshal([]byte(data), &msg)
 	if err != nil {
 		return nil, errDeserializeTask
 	}
+	fmt.Printf("[DEBUG] perform task %+v from %s\n", msg, q)
 	return &msg, nil
 }
 
@@ -92,7 +92,6 @@ func (r *rdb) zadd(zset string, zscore float64, msg *taskMessage) error {
 
 func (r *rdb) zRangeByScore(key string, opt *redis.ZRangeBy) ([]*taskMessage, error) {
 	jobs, err := r.client.ZRangeByScore(key, opt).Result()
-	fmt.Printf("len(jobs) = %d\n", len(jobs))
 	if err != nil {
 		return nil, fmt.Errorf("command ZRANGEBYSCORE %s %v failed: %v", key, opt, err)
 	}