Add expire TTL to secondary runtime key.

Author: chrisryan

src/Predis.php

@@ -124,6 +124,7 @@ private function cache(string $key, string $value, int $cacheTime = null, float
 
             if ($cacheTime !== null) {
                 $this->client->expire($key, $cacheTime);
+                $this->client->expire("{$key}.runtime", $cacheTime);
             }
         } catch (\Exception $e) {
             // We don't want exceptions in accessing the cache to break functionality.

tests/PredisTest.php

@@ -96,7 +96,10 @@ public function memoizeCallableRefreshRequest()
             [$this->equalTo($key), $this->equalTo($cachedValue)],
             [$this->equalTo("{$key}.runtime"), $this->lessThan(1)]
         );
-        $client->expects($this->once())->method('expire')->with($this->equalTo($key), $this->equalTo($cacheTime));
+        $client->expects($this->exactly(2))->method('expire')->withConsecutive(
+            [$this->equalTo($key), $this->equalTo($cacheTime)],
+            [$this->equalTo("{$key}.runtime"), $this->equalTo($cacheTime)]
+        );
 
         $memoizer = new Predis($client, false, 100);
 
@@ -128,7 +131,10 @@ public function memoizeCallableWithUncachedKey()
             [$this->equalTo($key), $this->equalTo($cachedValue)],
             [$this->equalTo("{$key}.runtime"), $this->lessThan(1)]
         );
-        $client->expects($this->once())->method('expire')->with($this->equalTo($key), $this->equalTo($cacheTime));
+        $client->expects($this->exactly(2))->method('expire')->withConsecutive(
+            [$this->equalTo($key), $this->equalTo($cacheTime)],
+            [$this->equalTo("{$key}.runtime"), $this->equalTo($cacheTime)]
+        );
 
         $memoizer = new Predis($client);