diff --git a/pkg/causality/conflict_detector.go b/pkg/causality/conflict_detector.go
index d7ddbdf922e..b8520a65acf 100644
--- a/pkg/causality/conflict_detector.go
+++ b/pkg/causality/conflict_detector.go
@@ -16,8 +16,8 @@ package causality
 import (
 	"sync"
 
-	"github.com/pingcap/tiflow/engine/pkg/containers"
 	"github.com/pingcap/tiflow/pkg/causality/internal"
+	"github.com/pingcap/tiflow/pkg/chann"
 	"go.uber.org/atomic"
 )
 
@@ -37,8 +37,8 @@ type ConflictDetector[Worker worker[Txn], Txn txnEvent] struct {
 	nextWorkerID atomic.Int64
 
 	// Used to run a background goroutine to GC or notify nodes.
-	notifiedNodes *containers.SliceQueue[func()]
-	garbageNodes  *containers.SliceQueue[txnFinishedEvent]
+	notifiedNodes *chann.Chann[func()]
+	garbageNodes  *chann.Chann[txnFinishedEvent]
 	wg            sync.WaitGroup
 	closeCh       chan struct{}
 }
@@ -57,8 +57,8 @@ func NewConflictDetector[Worker worker[Txn], Txn txnEvent](
 		workers:       workers,
 		slots:         internal.NewSlots[*internal.Node](numSlots),
 		numSlots:      numSlots,
-		notifiedNodes: containers.NewSliceQueue[func()](),
-		garbageNodes:  containers.NewSliceQueue[txnFinishedEvent](),
+		notifiedNodes: chann.New[func()](),
+		garbageNodes:  chann.New[txnFinishedEvent](),
 		closeCh:       make(chan struct{}),
 	}
 
@@ -80,12 +80,12 @@ func (d *ConflictDetector[Worker, Txn]) Add(txn Txn) {
 	node.OnResolved = func(workerID int64) {
 		unlock := func() {
 			node.Remove()
-			d.garbageNodes.Push(txnFinishedEvent{node, conflictKeys})
+			d.garbageNodes.In() <- txnFinishedEvent{node, conflictKeys}
 		}
 		d.sendToWorker(txn, unlock, workerID)
 	}
 	node.RandWorkerID = func() int64 { return d.nextWorkerID.Add(1) % int64(len(d.workers)) }
-	node.OnNotified = func(callback func()) { d.notifiedNodes.Push(callback) }
+	node.OnNotified = func(callback func()) { d.notifiedNodes.In() <- callback }
 	d.slots.Add(node, conflictKeys)
 }
 
@@ -96,24 +96,20 @@ func (d *ConflictDetector[Worker, Txn]) Close() {
 }
 
 func (d *ConflictDetector[Worker, Txn]) runBackgroundTasks() {
+	defer func() {
+		d.notifiedNodes.Close()
+		d.garbageNodes.Close()
+	}()
 	for {
 		select {
 		case <-d.closeCh:
 			return
-		case <-d.notifiedNodes.C:
-			for {
-				notifiyCallback, ok := d.notifiedNodes.Pop()
-				if !ok {
-					break
-				}
+		case notifiyCallback := <-d.notifiedNodes.Out():
+			if notifiyCallback != nil {
 				notifiyCallback()
 			}
-		case <-d.garbageNodes.C:
-			for {
-				event, ok := d.garbageNodes.Pop()
-				if !ok {
-					break
-				}
+		case event := <-d.garbageNodes.Out():
+			if event.node != nil {
 				d.slots.Free(event.node, event.conflictKeys)
 			}
 		}