Fix leaky bytes allocation for cache.

cache.go

@@ -14,15 +14,13 @@ func calculateHash(c *fiber.Ctx) string {
 }
 
 func enableCache() {
-	cfg.Cache.CacheClient = libpack_cache.New(time.Duration(cfg.Cache.CacheTTL) * time.Second * 2)
+	cfg.Cache.CacheClient = libpack_cache.New(time.Duration(cfg.Cache.CacheTTL) * time.Second * 100)
 }
 
 func cacheLookup(hash string) []byte {
-	if cfg.Cache.CacheClient != nil {
-		obj, found := cfg.Cache.CacheClient.Get(hash)
-		if found {
-			return obj
-		}
+	obj, found := cfg.Cache.CacheClient.Get(hash)
+	if found {
+		return obj
 	}
 	return nil
 }

cache/cache.go

@@ -44,23 +44,22 @@ func (c *Cache) cleanupRoutine(globalTTL time.Duration) {
 func (c *Cache) Set(key string, value []byte, ttl time.Duration) {
 	c.Lock()
 	defer c.Unlock()
+	expiresAt := time.Now().Add(ttl)
 
-	now := time.Now()
-	expiresAt := now.Add(ttl)
-	if expiresAt.After(now.Add(c.globalTTL)) {
-		expiresAt = now.Add(c.globalTTL)
+	// Get a byte slice from the pool and ensure it's properly sized.
+	b := c.bytePool.Get().([]byte)
+	if cap(b) < len(value) {
+		b = make([]byte, len(value))
+	} else {
+		b = b[:len(value)]
 	}
 
-	// Allocate a byte slice from the pool.
+	copy(b, value)
+
 	entry := CacheEntry{
-		Value:     c.bytePool.Get().([]byte),
+		Value:     b,
 		ExpiresAt: expiresAt,
 	}
-
-	// Copy the value into the byte slice.
-	copy(entry.Value, value)
-
-	// Set the entry in the cache.
 	c.entries.Store(key, entry)
 }
 
@@ -76,7 +75,6 @@ func (c *Cache) Get(key string) ([]byte, bool) {
 	// Copy the value from the byte slice.
 	value := make([]byte, len(entry.(CacheEntry).Value))
 	copy(value, entry.(CacheEntry).Value)
-
 	return value, true
 }
 

cache_test.go

@@ -27,7 +27,7 @@ func (suite *Tests) Test_cacheLookup() {
 		{
 			name: "test_existent",
 			args: args{
-				hash: "00000000000000000000000000000000000001",
+				hash: "00000000000000000000000000000000001337",
 			},
 			want: []byte("it's fine."),
 			addCache: struct {
@@ -40,7 +40,7 @@ func (suite *Tests) Test_cacheLookup() {
 	for _, tt := range tests {
 		suite.T().Run(tt.name, func(t *testing.T) {
 			if tt.addCache.data != nil {
-				cfg.Cache.CacheClient.Set(tt.args.hash, tt.addCache.data, time.Duration(1)*time.Second)
+				cfg.Cache.CacheClient.Set(tt.args.hash, tt.addCache.data, time.Duration(90*time.Second))
 			}
 			got := cacheLookup(tt.args.hash)
 			assert.Equal(tt.want, got, "Unexpected cache lookup result")