Merge pull request #40 from kingyyy/patch-1

fix(CacheableQueryBuilder): remove expired items from tagged cache

src/Database/Query/CacheableQueryBuilder.php

@@ -2,6 +2,7 @@
 
 namespace ElipZis\Cacheable\Database\Query;
 
+use Illuminate\Cache\RedisTaggedCache;
 use Illuminate\Cache\TaggableStore;
 use Illuminate\Database\Connection;
 use Illuminate\Database\Query\Builder;
@@ -136,6 +137,11 @@ protected function runSelect()
         //and create additional identifiers
         $modelClasses = $this->getIdentifiableModelClasses($this->getIdentifiableValue());
 
+        // clear expired cached queries in tagged cache
+        if ($isTaggableStore && Cache::tags($modelClasses) instanceof RedisTaggedCache) {
+            Cache::tags($modelClasses)->flushStale();
+        }
+
         //If cached, return
         if (($isTaggableStore && Cache::tags($modelClasses)->has($cacheKey)) || Cache::has($cacheKey)) {
             $this->log("Found cache entry for '{$cacheKey}'");