diff --git a/clients/redis.go b/clients/redis.go
index 7456337d..3dbe3f4d 100644
--- a/clients/redis.go
+++ b/clients/redis.go
@@ -13,6 +13,7 @@ func NewRedisClient(cfg config.RedisCacheConfig) (redis.UniversalClient, error)
 		Addrs:      cfg.Addresses,
 		Username:   cfg.Username,
 		Password:   cfg.Password,
+		PoolSize:   cfg.PoolSize,
 		MaxRetries: 7, // default value = 3, since MinRetryBackoff = 8 msec & MinRetryBackoff = 512 msec
 		// the redis client will wait up to 1016 msec btw the 7 tries
 	}
diff --git a/config/README.md b/config/README.md
index d4dbf57c..a1faa238 100644
--- a/config/README.md
+++ b/config/README.md
@@ -116,6 +116,7 @@ redis:
     - <string> # example "localhost:6379"
   username: <string>
   password: <string>
+  pool_size: <int>
   db_index: <int> | default = 0 [optional] # This option is only applicable for non-clustered Redis instance.
 
 # Expiration time for cached responses.
diff --git a/config/config.go b/config/config.go
index dbd0d2af..9a6595fe 100644
--- a/config/config.go
+++ b/config/config.go
@@ -959,6 +959,7 @@ type RedisCacheConfig struct {
 	Password  string                 `yaml:"password,omitempty"`
 	Addresses []string               `yaml:"addresses"`
 	DBIndex   int                    `yaml:"db_index,omitempty"`
+	PoolSize  int                    `yaml:"pool_size,omitempty"`
 	XXX       map[string]interface{} `yaml:",inline"`
 }
 
diff --git a/config/config_test.go b/config/config_test.go
index 72e52b6a..1d07cecc 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -53,6 +53,7 @@ var fullConfig = Config{
 				Username:  "chproxy",
 				Password:  "password",
 				Addresses: []string{"127.0.0.1:" + redisPort},
+				PoolSize:  10,
 			},
 		},
 	},
@@ -913,6 +914,7 @@ caches:
     password: XXX
     addresses:
     - 127.0.0.1:%s
+    pool_size: 10
   max_payload_size: 107374182400
   shared_with_all_users: true
 param_groups:
diff --git a/config/testdata/full.yml b/config/testdata/full.yml
index 7018fb87..140d6f3c 100644
--- a/config/testdata/full.yml
+++ b/config/testdata/full.yml
@@ -55,6 +55,7 @@ caches:
     redis:
       username: chproxy
       password: password
+      pool_size: 10
       addresses:
         - 127.0.0.1:16379
     max_payload_size: 107374182400