## [0.18.3] - 2020-03-11

### Fixed
- Fixed `RedisCache` as checking condition whether the connection is alive when getting/setting value

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.18.3] - 2020-03-11
+### Fixed
+- Fixed `RedisCache` as checking condition whether the connection is alive when getting/setting value 
+
 ## [0.18.2] - 2020-03-06
 ### Add
 - Added function `removeDoubleSpace` to get rid of the spaces over one in `StringUtils`

lib/Cache/RedisCache.php

@@ -23,7 +23,7 @@ public function __construct(string $host, int $port = 6379)
     public function get(string $key): ?string
     {
         try {
-            if ($this->client !== null) {
+            if ($this->client !== null && $this->client->isConnected()) {
                 return $this->client->get($key);
             }
         } catch (\Exception $e) {
@@ -44,7 +44,7 @@ public function setJson(string $key, array $value, int $ttl): void
     public function set(string $key, string $value, int $ttl): void
     {
         try {
-            if ($this->client !== null) {
+            if ($this->client !== null && $this->client->isConnected()) {
                 // setnx()은 호출 시점에서 해당하는 key-value가 존재하지 않는 경우에만 set이 성공한다.
                 // set 성공 시 return 1, 실패 시 return 0
                 $result = $this->client->setnx($key, $value);