diff --git a/composer.json b/composer.json
index d9773f5..0279149 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,8 @@
         "symfony/http-kernel": "^4.4 || ^5.0 || ^6.0",
         "symfony/dependency-injection": "^4.4 || ^5.0 || ^6.0",
         "symfony/config": "^4.4 || ^5.0 || ^6.0",
-        "symfony/stopwatch": "^4.4 || ^5.0 || ^6.0"
+        "symfony/stopwatch": "^4.4 || ^5.0 || ^6.0",
+        "symfony/service-contracts": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {
         "atoum/atoum": "^4.0",
diff --git a/src/TingBundle/DataCollector/TingCacheDataCollector.php b/src/TingBundle/DataCollector/TingCacheDataCollector.php
index 38b9568..9b69570 100644
--- a/src/TingBundle/DataCollector/TingCacheDataCollector.php
+++ b/src/TingBundle/DataCollector/TingCacheDataCollector.php
@@ -29,8 +29,9 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\DataCollector\DataCollector;
 use Symfony\Component\HttpKernel\DataCollector\LateDataCollectorInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
-class TingCacheDataCollector extends DataCollector implements LateDataCollectorInterface
+class TingCacheDataCollector extends DataCollector implements LateDataCollectorInterface, ResetInterface
 {
     /**
      * @var CacheLoggerInterface|null
@@ -104,17 +105,17 @@ public function getCacheOperationsCount()
 
     public function getCacheTotalTime()
     {
-        return $this->data['cache']['time'];
+        return $this->data['cache']['time'] ?? 0;
     }
 
     public function getHits()
     {
-        return $this->data['cache']['hits'];
+        return $this->data['cache']['hits'] ?? 0;
     }
 
     public function getMiss()
     {
-        return $this->data['cache']['miss'];
+        return $this->data['cache']['miss'] ?? 0;
     }
 
     public function reset()
diff --git a/src/TingBundle/DataCollector/TingDriverDataCollector.php b/src/TingBundle/DataCollector/TingDriverDataCollector.php
index 268295c..35cc52c 100644
--- a/src/TingBundle/DataCollector/TingDriverDataCollector.php
+++ b/src/TingBundle/DataCollector/TingDriverDataCollector.php
@@ -29,8 +29,9 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\DataCollector\DataCollector;
 use Symfony\Component\HttpKernel\DataCollector\LateDataCollectorInterface;
+use Symfony\Contracts\Service\ResetInterface;
 
-class TingDriverDataCollector extends DataCollector implements LateDataCollectorInterface
+class TingDriverDataCollector extends DataCollector implements LateDataCollectorInterface, ResetInterface
 {
     /**
      * @var DriverLoggerInterface|null
@@ -116,32 +117,32 @@ public function setDriverLogger(DriverLoggerInterface $driverLogger = null)
 
     public function getQueryCount()
     {
-        return $this->data['driver']['queryCount'];
+        return $this->data['driver']['queryCount'] ?? 0;
     }
 
     public function getQueries()
     {
-        return $this->data['driver']['queries'];
+        return $this->data['driver']['queries'] ?? [];
     }
 
     public function getExecs()
     {
-        return $this->data['driver']['execs'];
+        return $this->data['driver']['execs'] ?? [];
     }
 
     public function getTime()
     {
-        return $this->data['driver']['time'];
+        return $this->data['driver']['time'] ?? 0;
     }
 
     public function getConnections()
     {
-        return $this->data['driver']['connections'];
+        return $this->data['driver']['connections'] ?? [];
     }
 
     public function getConnectionsHashToName()
     {
-        return $this->data['driver']['connectionsHashToName'];
+        return $this->data['driver']['connectionsHashToName'] ?? [];
     }
 
     public function reset()
diff --git a/src/TingBundle/Logger/CacheLogger.php b/src/TingBundle/Logger/CacheLogger.php
index e5b48fe..3443e3d 100644
--- a/src/TingBundle/Logger/CacheLogger.php
+++ b/src/TingBundle/Logger/CacheLogger.php
@@ -27,8 +27,9 @@
 use CCMBenchmark\Ting\Logger\CacheLoggerInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
+use Symfony\Contracts\Service\ResetInterface;
 
-class CacheLogger implements CacheLoggerInterface
+class CacheLogger implements CacheLoggerInterface, ResetInterface
 {
     protected $operationIndex = 0;
     protected $operations     = [];
@@ -126,4 +127,13 @@ public function getMiss()
     {
         return $this->miss;
     }
+
+    public function reset(): void
+    {
+        $this->operationIndex = 0;
+        $this->operations     = [];
+        $this->hits           = 0;
+        $this->miss           = 0;
+        $this->totalTime      = 0;
+    }
 }
diff --git a/src/TingBundle/Logger/DriverLogger.php b/src/TingBundle/Logger/DriverLogger.php
index 0e91424..3e98c8b 100644
--- a/src/TingBundle/Logger/DriverLogger.php
+++ b/src/TingBundle/Logger/DriverLogger.php
@@ -27,8 +27,9 @@
 use CCMBenchmark\Ting\Logger\DriverLoggerInterface;
 use Psr\Log\LoggerInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
+use Symfony\Contracts\Service\ResetInterface;
 
-class DriverLogger implements DriverLoggerInterface
+class DriverLogger implements DriverLoggerInterface, ResetInterface
 {
     /**
      * @var null|LoggerInterface
@@ -253,4 +254,15 @@ public function getExecs()
     {
         return $this->execs;
     }
+
+    public function reset(): void
+    {
+        $this->queries = [];
+        $this->execs = [];
+        $this->totalTime = 0;
+        $this->connections = [];
+        $this->connectionsHashToName = [];
+        $this->queryIndex = 0;
+        $this->execIndex = 0;
+    }
 }
diff --git a/src/TingBundle/Resources/config/services.xml b/src/TingBundle/Resources/config/services.xml
index f3f0beb..5cb9aba 100644
--- a/src/TingBundle/Resources/config/services.xml
+++ b/src/TingBundle/Resources/config/services.xml
@@ -33,6 +33,7 @@
         </service>
 
         <service id="ting.driverlogger" synthetic="true" public="true">
+            <tag name="kernel.reset" method="reset" />
         </service>
 
         <service id="ting.connectionpool" class="CCMBenchmark\Ting\ConnectionPool" public="true">
@@ -42,12 +43,14 @@
             <call method="setDatabaseOptions">
                 <argument>%ting.database_options%</argument>
             </call>
+            <tag name="kernel.reset" method="reset" />
         </service>
 
         <service id="ting.unitofwork" class="CCMBenchmark\Ting\UnitOfWork" public="true">
             <argument type="service" id="ting.connectionpool" />
             <argument type="service" id="ting.metadatarepository" />
             <argument type="service" id="ting.queryfactory" />
+            <tag name="kernel.reset" method="reset" />
         </service>
 
         <service id="ting.hydrator" class="CCMBenchmark\Ting\Repository\Hydrator" shared="false" public="true">
@@ -79,10 +82,12 @@
 
         <service id="ting.driver_data_collector" class="CCMBenchmark\TingBundle\DataCollector\TingDriverDataCollector" public="true">
             <tag name="data_collector" template="@Ting/Collector/driverCollector.html.twig" id="ting.driver" />
+            <tag name="kernel.reset" method="reset" />
         </service>
 
         <service id="ting.cache_data_collector" class="CCMBenchmark\TingBundle\DataCollector\TingCacheDataCollector" public="true">
             <tag name="data_collector" template="@Ting/Collector/cacheCollector.html.twig" id="ting.cache" />
+            <tag name="kernel.reset" method="reset" />
         </service>
 
         <service id="ting.metadata_warmer" class="CCMBenchmark\TingBundle\Cache\MetadataWarmer" public="true">