diff --git a/main.go b/main.go
index 868cea5..dace603 100644
--- a/main.go
+++ b/main.go
@@ -3,9 +3,14 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"log"
+	"net/http"
 	"os"
+	"os/signal"
+	"syscall"
+	"time"
 
 	"github.com/asynkron/protoactor-go/actor"
 
@@ -25,20 +30,44 @@ func main() {
 	props := actor.PropsFromProducer(func() actor.Actor {
 		return &check.KorcenActor{}
 	})
-
 	korcenPID := system.Root.Spawn(props)
 
 	config := middleware.MiddlewareConfig{
 		Capacity:   100,          // 최대 토큰 수
-		RefillRate: 100.0 / 60.0, // 초당 리필 속도 (1분당 100개)
+		RefillRate: 100.0 / 60.0, // 초당 리필 속도 (1분당 100회)
 	}
 
 	r := router.SetupRouter(system, korcenPID, config)
 
 	r.GET("/swagger/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
 
-	if err := r.Run(":7777"); err != nil {
-		log.Println("Failed to start server:", err)
-		os.Exit(1)
+	srv := &http.Server{
+		Addr:    ":7777",
+		Handler: r,
+	}
+
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("Failed to start server: %v\n", err)
+		}
+	}()
+	log.Println("Server is running on port 7777.")
+
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+	log.Println("Shutdown signal received...")
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	if err := srv.Shutdown(ctx); err != nil {
+		log.Fatalf("Server forced to shutdown: %v", err)
 	}
+
+	log.Println("Shutting down worker pool...")
+	check.ShutdownWorkerPool()
+	log.Println("Worker pool has been shut down successfully.")
+
+	log.Println("Server exiting.")
 }
diff --git a/pkg/check/korcen.go b/pkg/check/korcen.go
index 497d85e..eb1e253 100644
--- a/pkg/check/korcen.go
+++ b/pkg/check/korcen.go
@@ -40,8 +40,14 @@ func freeKorcenResult(result *KorcenResult) {
 	korcenPool.Put(result)
 }
 
+var workerPool = NewWorkerPool(10)
+
+func ShutdownWorkerPool() {
+	workerPool.Shutdown()
+}
+
 var (
-	globalLRU = NewShardedLRUCache(16, 64)
+	globalLRU = NewShardedLRUCache(16, 64, workerPool)
 )
 
 func Korcen(header *Header) (*Respond, error) {
@@ -119,6 +125,11 @@ type KorcenResponse struct {
 	Err     error
 }
 
+type KorcenResponseMessage struct {
+	Respond *Respond
+	Err     error
+}
+
 type KorcenActor struct{}
 
 func (k *KorcenActor) Receive(context actor.Context) {
@@ -133,18 +144,18 @@ func (k *KorcenActor) Receive(context actor.Context) {
 			return
 		}
 
-		resp, err := Korcen(msg.Header)
-		if err != nil {
-			context.Respond(&KorcenResponse{
-				Respond: nil,
+		workerPool.Submit(func() {
+			resp, err := Korcen(msg.Header)
+			context.Send(context.Self(), &KorcenResponseMessage{
+				Respond: resp,
 				Err:     err,
 			})
-			return
-		}
+		})
 
+	case *KorcenResponseMessage:
 		context.Respond(&KorcenResponse{
-			Respond: resp,
-			Err:     nil,
+			Respond: msg.Respond,
+			Err:     msg.Err,
 		})
 
 	default:
diff --git a/pkg/check/sharded_lru.go b/pkg/check/sharded_lru.go
index 113f41e..601f17c 100644
--- a/pkg/check/sharded_lru.go
+++ b/pkg/check/sharded_lru.go
@@ -70,47 +70,6 @@ func putEntry(e *entry) {
 	entryPool.Put(e)
 }
 
-type GoroutineManager struct {
-	numWorkers int
-	jobChan    chan func()
-	stopChan   chan struct{}
-	wg         sync.WaitGroup
-}
-
-func NewGoroutineManager(workerCount int) *GoroutineManager {
-	manager := &GoroutineManager{
-		numWorkers: workerCount,
-		jobChan:    make(chan func(), 1000),
-		stopChan:   make(chan struct{}),
-	}
-
-	manager.wg.Add(workerCount)
-	for i := 0; i < workerCount; i++ {
-		go func() {
-			defer manager.wg.Done()
-			for {
-				select {
-				case job := <-manager.jobChan:
-					job()
-				case <-manager.stopChan:
-					return
-				}
-			}
-		}()
-	}
-
-	return manager
-}
-
-func (gm *GoroutineManager) Submit(job func()) {
-	gm.jobChan <- job
-}
-
-func (gm *GoroutineManager) Shutdown() {
-	close(gm.stopChan)
-	gm.wg.Wait()
-}
-
 type UsageStats struct {
 	Hits       uint64
 	Misses     uint64
@@ -236,11 +195,11 @@ func (c *LRUCache) removeOldest() {
 type ShardedLRUCache struct {
 	shards     []*TrackableLRUCache
 	shardCount int
-	manager    *GoroutineManager
+	workerPool *WorkerPool
 	allocator  *SlabAllocator
 }
 
-func NewShardedLRUCache(shardCount int, perShardCapacity int) *ShardedLRUCache {
+func NewShardedLRUCache(shardCount int, perShardCapacity int, workerPool *WorkerPool) *ShardedLRUCache {
 	if shardCount <= 0 || (shardCount&(shardCount-1)) != 0 {
 		panic("shardCount must be a power of two")
 	}
@@ -255,12 +214,10 @@ func NewShardedLRUCache(shardCount int, perShardCapacity int) *ShardedLRUCache {
 		shards[i] = trackedLRU
 	}
 
-	manager := NewGoroutineManager(shardCount)
-
 	return &ShardedLRUCache{
 		shards:     shards,
 		shardCount: shardCount,
-		manager:    manager,
+		workerPool: workerPool,
 		allocator:  allocator,
 	}
 }
@@ -279,9 +236,9 @@ func (c *ShardedLRUCache) Set(key string, value *KorcenResult) error {
 	shard := c.getShard(key)
 	done := make(chan error, 1)
 
-	c.manager.Submit(func() {
-		err := shard.Set(key, value)
-		done <- err
+	c.workerPool.Submit(func() {
+		shard.Set(key, value)
+		done <- nil
 	})
 
 	err := <-done
@@ -309,5 +266,5 @@ func (c *ShardedLRUCache) GetStats() UsageStats {
 }
 
 func (c *ShardedLRUCache) Stop() {
-	c.manager.Shutdown()
+	c.workerPool.Shutdown()
 }