diff --git a/src/Framework/DI/DefaultContainer.php b/src/Framework/DI/DefaultContainer.php
index 5f5f095b..6c101a2e 100644
--- a/src/Framework/DI/DefaultContainer.php
+++ b/src/Framework/DI/DefaultContainer.php
@@ -9,6 +9,7 @@ use App\Framework\DI\Exceptions\ClassNotInstantiable;
 use App\Framework\DI\Exceptions\ClassNotResolvableException;
 use App\Framework\DI\Exceptions\ClassResolutionException;
 use App\Framework\DI\ProactiveInitializerFinder;
+use App\Framework\DI\ValueObjects\InitializerInfo;
 use App\Framework\DI\Exceptions\ContainerException;
 use App\Framework\DI\Exceptions\CyclicDependencyException;
 use App\Framework\DI\Exceptions\LazyLoadingException;
@@ -40,6 +41,8 @@ final class DefaultContainer implements Container
 
     public readonly FrameworkMetricsCollector $metrics;
 
+    private readonly InitializerDependencyAnalyzer $dependencyAnalyzer;
+
     public function __construct(
         private readonly InstanceRegistry $instances = new InstanceRegistry(),
         private readonly BindingRegistry $bindings = new BindingRegistry(),
@@ -60,6 +63,7 @@ final class DefaultContainer implements Container
             fn (): array => $this->resolving
         );
         $this->metrics = new FrameworkMetricsCollector();
+        $this->dependencyAnalyzer = new InitializerDependencyAnalyzer($this);
 
         $this->registerSelf();
         $this->instance(ReflectionProvider::class, $this->reflectionProvider);
@@ -144,7 +148,10 @@ final class DefaultContainer implements Container
         if (in_array($class, $this->resolving, true)) {
             throw new CyclicDependencyException(
                 dependencyChain: $this->resolving,
-                class: $class
+                class: $class,
+                code: 0,
+                previous: null,
+                dependencyAnalyzer: $this->dependencyAnalyzer
             );
         }
 
@@ -522,7 +529,8 @@ final class DefaultContainer implements Container
                 return $container->invoker->invoke($initializerClass, $methodName);
             });
 
-            // TODO: Gefundenen Initializer in Discovery Cache nachtragen (später implementieren)
+            // Gefundenen Initializer in Discovery Cache nachtragen
+            $this->updateDiscoveryCache($initializerInfo);
 
             return true;
         } catch (\Throwable $e) {
@@ -530,4 +538,74 @@ final class DefaultContainer implements Container
             return false;
         }
     }
+
+    /**
+     * Aktualisiert den Discovery Cache mit einem proaktiv gefundenen Initializer
+     */
+    private function updateDiscoveryCache(InitializerInfo $initializerInfo): void
+    {
+        try {
+            $updater = $this->getCacheUpdater();
+            if ($updater === null) {
+                return;
+            }
+
+            // Versuche zuerst Registry aus Container zu laden
+            $registry = $this->has(DiscoveryRegistry::class)
+                ? $this->get(DiscoveryRegistry::class)
+                : null;
+
+            $updater->updateCache($initializerInfo, $registry);
+        } catch (\Throwable $e) {
+            // Silently ignore errors during cache update
+            // Initializer funktioniert trotzdem, nur Cache-Update schlägt fehl
+        }
+    }
+
+    /**
+     * Holt oder erstellt einen InitializerCacheUpdater
+     */
+    private function getCacheUpdater(): ?InitializerCacheUpdater
+    {
+        try {
+            // Prüfe ob alle benötigten Abhängigkeiten verfügbar sind
+            if (!$this->has(\App\Framework\Discovery\Storage\DiscoveryCacheManager::class)) {
+                // Versuche DiscoveryCacheManager zu erstellen
+                if (!$this->has(\App\Framework\Cache\Cache::class) ||
+                    !$this->has(\App\Framework\DateTime\Clock::class) ||
+                    !$this->has(\App\Framework\Filesystem\FileSystemService::class)) {
+                    return null;
+                }
+
+                $cache = $this->get(\App\Framework\Cache\Cache::class);
+                $clock = $this->get(\App\Framework\DateTime\Clock::class);
+                $fileSystemService = $this->get(\App\Framework\Filesystem\FileSystemService::class);
+
+                $cacheManager = new \App\Framework\Discovery\Storage\DiscoveryCacheManager(
+                    cache: $cache,
+                    clock: $clock,
+                    fileSystemService: $fileSystemService
+                );
+            } else {
+                $cacheManager = $this->get(\App\Framework\Discovery\Storage\DiscoveryCacheManager::class);
+            }
+
+            $pathProvider = $this->has(\App\Framework\Core\PathProvider::class)
+                ? $this->get(\App\Framework\Core\PathProvider::class)
+                : new \App\Framework\Core\PathProvider(getcwd() ?: '.');
+
+            $clock = $this->has(\App\Framework\DateTime\Clock::class)
+                ? $this->get(\App\Framework\DateTime\Clock::class)
+                : new \App\Framework\DateTime\SystemClock();
+
+            return new InitializerCacheUpdater(
+                reflectionProvider: $this->reflectionProvider,
+                cacheManager: $cacheManager,
+                pathProvider: $pathProvider,
+                clock: $clock
+            );
+        } catch (\Throwable $e) {
+            return null;
+        }
+    }
 }
diff --git a/src/Framework/DI/Exceptions/CyclicDependencyException.php b/src/Framework/DI/Exceptions/CyclicDependencyException.php
index f38be190..61a1195b 100644
--- a/src/Framework/DI/Exceptions/CyclicDependencyException.php
+++ b/src/Framework/DI/Exceptions/CyclicDependencyException.php
@@ -15,12 +15,14 @@ final class CyclicDependencyException extends ContainerException
     private readonly string $cycleStart;
     private readonly array $fullChain;
     private readonly array $chainBeforeCycle;
+    private readonly ?InitializerDependencyAnalyzer $dependencyAnalyzer;
 
     public function __construct(
         array $dependencyChain,
         string $class,
         int $code = 0,
-        ?\Throwable $previous = null
+        ?\Throwable $previous = null,
+        ?InitializerDependencyAnalyzer $dependencyAnalyzer = null
     ) {
         // Speichere vollständige Kette
         $this->fullChain = array_merge($dependencyChain, [$class]);
@@ -44,6 +46,7 @@ final class CyclicDependencyException extends ContainerException
 
         $this->cycle = $cycle;
         $this->cycleStart = $cycleStart;
+        $this->dependencyAnalyzer = $dependencyAnalyzer;
 
         $context = ExceptionContext::forOperation('dependency_resolution', 'DI')
             ->withData([
@@ -256,7 +259,8 @@ final class CyclicDependencyException extends ContainerException
      */
     private function findProblematicDependency(array $initializerDependencies, string $interface): array
     {
-        $analyzer = new InitializerDependencyAnalyzer();
+        // Verwende Analyzer aus Exception (wenn verfügbar)
+        $analyzer = $this->dependencyAnalyzer ?? new InitializerDependencyAnalyzer();
         
         // Methode 1: Rekursive Suche - Finde vollständigen Pfad für jede Dependency
         foreach ($initializerDependencies as $dependency) {
@@ -439,7 +443,7 @@ final class CyclicDependencyException extends ContainerException
         }
 
         // Analysiere Dependencies des Initializers
-        $analyzer = new InitializerDependencyAnalyzer();
+        $analyzer = $this->dependencyAnalyzer ?? new InitializerDependencyAnalyzer();
         $dependencyAnalysis = $analyzer->analyze($initializerClass);
         
         // Kombiniere Constructor- und container->get() Dependencies
diff --git a/src/Framework/DI/InitializerCacheUpdater.php b/src/Framework/DI/InitializerCacheUpdater.php
new file mode 100644
index 00000000..e9b6453a
--- /dev/null
+++ b/src/Framework/DI/InitializerCacheUpdater.php
@@ -0,0 +1,158 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Framework\DI;
+
+use App\Framework\Core\PathProvider;
+use App\Framework\DateTime\Clock;
+use App\Framework\DI\ValueObjects\InitializerInfo;
+use App\Framework\Discovery\Results\DiscoveryRegistry;
+use App\Framework\Discovery\Storage\DiscoveryCacheManager;
+use App\Framework\Discovery\ValueObjects\AttributeTarget;
+use App\Framework\Discovery\ValueObjects\DiscoveredAttribute;
+use App\Framework\Discovery\ValueObjects\DiscoveryContext;
+use App\Framework\Discovery\ValueObjects\DiscoveryOptions;
+use App\Framework\Discovery\ValueObjects\ScanType;
+use App\Framework\Filesystem\FileSystemService;
+use App\Framework\Filesystem\ValueObjects\FilePath;
+use App\Framework\Reflection\ReflectionProvider;
+
+/**
+ * Verantwortlich für das Update des Discovery Caches mit proaktiv gefundenen Initializern
+ */
+final readonly class InitializerCacheUpdater
+{
+    public function __construct(
+        private ReflectionProvider $reflectionProvider,
+        private DiscoveryCacheManager $cacheManager,
+        private PathProvider $pathProvider,
+        private Clock $clock
+    ) {}
+
+    /**
+     * Aktualisiert den Discovery Cache mit einem proaktiv gefundenen Initializer
+     */
+    public function updateCache(InitializerInfo $initializerInfo, ?DiscoveryRegistry $registry = null): bool
+    {
+        try {
+            // Konvertiere InitializerInfo zu DiscoveredAttribute
+            $discoveredAttribute = $this->convertToDiscoveredAttribute($initializerInfo);
+            if ($discoveredAttribute === null) {
+                return false;
+            }
+
+            // Lade aktuelle DiscoveryRegistry falls nicht übergeben
+            if ($registry === null) {
+                $registry = $this->loadDiscoveryRegistry();
+            }
+
+            if ($registry === null) {
+                return false;
+            }
+
+            // Füge DiscoveredAttribute zur Registry hinzu
+            $registry->attributes->add(Initializer::class, $discoveredAttribute);
+
+            // Speichere aktualisierte Registry zurück in Cache
+            return $this->storeDiscoveryRegistry($registry);
+        } catch (\Throwable $e) {
+            // Silently ignore errors during cache update
+            // Initializer funktioniert trotzdem, nur Cache-Update schlägt fehl
+            return false;
+        }
+    }
+
+    /**
+     * Konvertiert InitializerInfo zu DiscoveredAttribute
+     */
+    private function convertToDiscoveredAttribute(InitializerInfo $initializerInfo): ?DiscoveredAttribute
+    {
+        try {
+            $initializerClass = $initializerInfo->initializerClass;
+            $methodName = $initializerInfo->methodName;
+
+            // Bestimme filePath via Reflection
+            $reflection = $this->reflectionProvider->getClass($initializerClass);
+            $fileName = $reflection->getFileName();
+            $filePath = $fileName !== false ? FilePath::create($fileName) : null;
+
+            // Generiere additionalData via InitializerMapper
+            $methodReflectionWrapped = $this->reflectionProvider->getMethod(
+                $initializerClass,
+                $methodName->toString()
+            );
+
+            // Erstelle Initializer Attribut-Instanz für Mapper (keine Contexts = alle erlaubt)
+            $initializerAttr = new Initializer();
+
+            // Nutze InitializerMapper um additionalData zu generieren
+            $mapper = new InitializerMapper();
+            $additionalData = $mapper->map($methodReflectionWrapped, $initializerAttr);
+
+            return new DiscoveredAttribute(
+                className: $initializerClass,
+                attributeClass: Initializer::class,
+                target: AttributeTarget::METHOD,
+                methodName: $methodName,
+                propertyName: null,
+                arguments: [],
+                filePath: $filePath,
+                additionalData: $additionalData
+            );
+        } catch (\Throwable $e) {
+            // Silently ignore errors during conversion
+            return null;
+        }
+    }
+
+    /**
+     * Lädt die aktuelle DiscoveryRegistry aus Cache
+     */
+    private function loadDiscoveryRegistry(): ?DiscoveryRegistry
+    {
+        try {
+            $context = $this->createDiscoveryContext();
+            $cached = $this->cacheManager->get($context);
+
+            if ($cached !== null) {
+                return $cached;
+            }
+
+            // Falls Cache leer, erstelle neue Registry
+            return DiscoveryRegistry::empty();
+        } catch (\Throwable $e) {
+            return null;
+        }
+    }
+
+    /**
+     * Speichert die DiscoveryRegistry zurück in den Cache
+     */
+    private function storeDiscoveryRegistry(DiscoveryRegistry $registry): bool
+    {
+        try {
+            $context = $this->createDiscoveryContext();
+
+            return $this->cacheManager->store($context, $registry);
+        } catch (\Throwable $e) {
+            return false;
+        }
+    }
+
+    /**
+     * Erstellt einen DiscoveryContext für Cache-Zugriff
+     */
+    private function createDiscoveryContext(): DiscoveryContext
+    {
+        $paths = [$this->pathProvider->getSourcePath()];
+
+        return new DiscoveryContext(
+            paths: $paths,
+            scanType: ScanType::FULL,
+            options: DiscoveryOptions::default(),
+            startTime: $this->clock->now()
+        );
+    }
+}
+
diff --git a/src/Framework/DI/InitializerDependencyAnalyzer.php b/src/Framework/DI/InitializerDependencyAnalyzer.php
index 4e81b9a9..e54eb45b 100644
--- a/src/Framework/DI/InitializerDependencyAnalyzer.php
+++ b/src/Framework/DI/InitializerDependencyAnalyzer.php
@@ -14,6 +14,11 @@ namespace App\Framework\DI;
 final readonly class InitializerDependencyAnalyzer
 {
     private const MAX_RECURSION_DEPTH = 4;
+    
+    public function __construct(
+        private ?Container $container = null
+    ) {
+    }
     /**
      * Analysiere Dependencies eines Initializers
      *
@@ -351,18 +356,31 @@ final readonly class InitializerDependencyAnalyzer
     }
 
     /**
-     * Hole Dependencies einer Klasse (Constructor-Parameter)
+     * Hole Dependencies einer Klasse (Constructor-Parameter + Array-Elemente)
      *
      * @return array<string>
      */
     private function getClassDependencies(string $className): array
     {
         try {
-            if (!class_exists($className)) {
+            if (!class_exists($className) && !interface_exists($className)) {
                 return [];
             }
 
             $reflection = new \ReflectionClass($className);
+            
+            // Wenn es ein Interface ist, versuche die Implementierung zu finden
+            if ($reflection->isInterface()) {
+                // Suche nach bekannten Implementierungen (basierend auf Namenskonvention)
+                $implClass = $this->findInterfaceImplementation($className);
+                if ($implClass !== null && class_exists($implClass)) {
+                    $reflection = new \ReflectionClass($implClass);
+                } else {
+                    // Kann keine Dependencies für Interfaces ohne Implementierung finden
+                    return [];
+                }
+            }
+            
             $constructor = $reflection->getConstructor();
 
             if ($constructor === null) {
@@ -378,10 +396,210 @@ final readonly class InitializerDependencyAnalyzer
                 }
             }
 
-            return $dependencies;
+            // Zusätzlich: Prüfe ob Parameter Arrays sind, die Klassen-Namen enthalten könnten
+            // (z.B. TemplateProcessor hat $astTransformers als Array von Klassen-Namen)
+            foreach ($constructor->getParameters() as $parameter) {
+                $type = $parameter->getType();
+                if ($type instanceof \ReflectionNamedType && $type->getName() === 'array') {
+                    // Versuche Klassen-Namen aus dem Array zu extrahieren (via Code-Parsing)
+                    $arrayDeps = $this->extractClassNamesFromArrayParameter($reflection, $parameter);
+                    $dependencies = array_merge($dependencies, $arrayDeps);
+                }
+            }
+
+            return array_unique($dependencies);
         } catch (\Throwable) {
             return [];
         }
     }
+
+    /**
+     * Extrahiere Klassen-Namen aus Array-Parametern (z.B. $astTransformers = [XComponentTransformer::class])
+     * 
+     * Sucht sowohl im Constructor als auch in Initializern (__invoke)
+     */
+    private function extractClassNamesFromArrayParameter(\ReflectionClass $class, \ReflectionParameter $parameter): array
+    {
+        try {
+            $fileName = $class->getFileName();
+            if ($fileName === false || !file_exists($fileName)) {
+                return [];
+            }
+
+            $fileContent = file_get_contents($fileName);
+            if ($fileContent === false) {
+                return [];
+            }
+
+            $paramName = $parameter->getName();
+            $classes = [];
+
+            // 1. Suche im Constructor
+            $constructor = $class->getConstructor();
+            if ($constructor !== null) {
+                $startLine = $constructor->getStartLine();
+                $endLine = $constructor->getEndLine();
+                
+                if ($startLine !== false && $endLine !== false) {
+                    $lines = explode("\n", $fileContent);
+                    $constructorLines = array_slice($lines, $startLine - 1, $endLine - $startLine + 1);
+                    $constructorCode = implode("\n", $constructorLines);
+
+                    // Finde Array-Initialisierungen für diesen Parameter
+                    // Pattern: [ClassName::class, ...] oder ['ClassName', ...]
+                    $pattern = '/\$' . preg_quote($paramName, '/') . '\s*=\s*\[(.*?)\]/s';
+                    if (preg_match($pattern, $constructorCode, $matches)) {
+                        $arrayClasses = $this->extractClassesFromArrayContent($matches[1], $fileContent, $constructor);
+                        $classes = array_merge($classes, $arrayClasses);
+                    }
+                }
+            }
+
+            // 2. Suche auch in __invoke() (für Initializer)
+            try {
+                $invokeMethod = $class->getMethod('__invoke');
+                $startLine = $invokeMethod->getStartLine();
+                $endLine = $invokeMethod->getEndLine();
+                
+                if ($startLine !== false && $endLine !== false) {
+                    $lines = explode("\n", $fileContent);
+                    $invokeLines = array_slice($lines, $startLine - 1, $endLine - $startLine + 1);
+                    $invokeCode = implode("\n", $invokeLines);
+
+                    // Finde Array-Initialisierungen die an diesen Parameter übergeben werden
+                    // Pattern: [$paramName] = [...] oder new Class([...])
+                    // Oder: $paramName = [...]
+                    $pattern = '/\$' . preg_quote($paramName, '/') . '\s*=\s*\[(.*?)\]/s';
+                    if (preg_match($pattern, $invokeCode, $matches)) {
+                        $arrayClasses = $this->extractClassesFromArrayContent($matches[1], $fileContent, $invokeMethod);
+                        $classes = array_merge($classes, $arrayClasses);
+                    }
+                    
+                    // Suche auch nach direkten Array-Definitionen die an den Parameter übergeben werden
+                    // z.B. new TemplateProcessor(astTransformers: [XComponentTransformer::class, ...])
+                    $pattern = '/\b' . preg_quote($paramName, '/') . '\s*:\s*\[(.*?)\]/s';
+                    if (preg_match($pattern, $invokeCode, $matches)) {
+                        $arrayClasses = $this->extractClassesFromArrayContent($matches[1], $fileContent, $invokeMethod);
+                        $classes = array_merge($classes, $arrayClasses);
+                    }
+                }
+            } catch (\ReflectionException) {
+                // __invoke() existiert nicht - das ist okay
+            }
+
+            return array_unique($classes);
+        } catch (\Throwable) {
+            return [];
+        }
+    }
+
+    /**
+     * Extrahiere Klassen-Namen aus Array-Content-String
+     */
+    private function extractClassesFromArrayContent(string $arrayContent, string $fileContent, \ReflectionMethod $method): array
+    {
+        // Finde alle Klassen-Namen (::class oder als String)
+        $classPattern = '/([A-Z][A-Za-z0-9\\\\]+)(::class|\')/';
+        preg_match_all($classPattern, $arrayContent, $classMatches);
+        
+        $classes = [];
+        if (!empty($classMatches[1])) {
+            foreach ($classMatches[1] as $classMatch) {
+                // Normalisiere (füge \ am Anfang hinzu wenn nicht vorhanden)
+                if (!str_starts_with($classMatch, '\\') && !str_starts_with($classMatch, 'App\\')) {
+                    // Versuche vollständigen Namespace zu finden
+                    $fullClassName = $this->resolveClassNameFromMethod($classMatch, $fileContent, $method);
+                    if ($fullClassName !== null) {
+                        $classes[] = $fullClassName;
+                    } elseif (class_exists($classMatch)) {
+                        $classes[] = $classMatch;
+                    }
+                } elseif (class_exists($classMatch)) {
+                    $classes[] = $classMatch;
+                }
+            }
+        }
+
+        return $classes;
+    }
+
+    /**
+     * Versuche Implementierung eines Interfaces zu finden
+     * 
+     * Prüft zuerst Container-Bindings, dann Namenskonventionen
+     */
+    private function findInterfaceImplementation(string $interface): ?string
+    {
+        // 1. Versuche über Container-Bindings (falls Container verfügbar)
+        if ($this->container !== null) {
+            try {
+                // Prüfe ob Interface gebunden ist
+                if ($this->container->has($interface)) {
+                    $binding = $this->getBindingForInterface($interface);
+                    if ($binding !== null) {
+                        // Wenn Binding ein String ist (Klassenname), verwende diesen
+                        if (is_string($binding) && class_exists($binding)) {
+                            return $binding;
+                        }
+                        
+                        // Wenn Binding ein Objekt ist, verwende dessen Klasse
+                        if (is_object($binding)) {
+                            return $binding::class;
+                        }
+                        
+                        // Wenn Binding ein Callable ist, können wir es nicht direkt auflösen
+                        // aber wir können versuchen, es zu instanziieren (wenn kein Zyklus)
+                        // Das ist riskant, also überspringen wir es für jetzt
+                    }
+                }
+            } catch (\Throwable) {
+                // Container-Zugriff fehlgeschlagen - ignoriere und versuche Fallback
+            }
+        }
+        
+        // 2. Versuche Namenskonvention: Interface -> DefaultInterfaceName
+        $interfaceName = basename(str_replace('\\', '/', $interface));
+        $namespace = substr($interface, 0, strrpos($interface, '\\'));
+        
+        // Versuche "Default" + InterfaceName ohne "Interface"
+        $implName = str_replace('Interface', '', $interfaceName);
+        $defaultImpl = $namespace . '\\Default' . $implName;
+        if (class_exists($defaultImpl)) {
+            return $defaultImpl;
+        }
+        
+        // Versuche einfach InterfaceName ohne "Interface"
+        $simpleImpl = $namespace . '\\' . $implName;
+        if (class_exists($simpleImpl)) {
+            return $simpleImpl;
+        }
+        
+        return null;
+    }
+    
+    /**
+     * Hole Binding für ein Interface aus dem Container
+     */
+    private function getBindingForInterface(string $interface): callable|string|object|null
+    {
+        if ($this->container === null) {
+            return null;
+        }
+        
+        try {
+            // Versuche über Introspector (sicherer, keine Instanziierung)
+            // Introspector ist eine readonly Property im Container
+            if (property_exists($this->container, 'introspector')) {
+                $introspector = $this->container->introspector;
+                return $introspector->getBinding($interface);
+            }
+            
+            // Fallback: Versuche direkt über BindingRegistry (wenn verfügbar)
+            // Das ist nicht ideal, aber besser als nichts
+            return null;
+        } catch (\Throwable) {
+            return null;
+        }
+    }
 }