diff --git a/phpunit/code/compiler_api/persistent_symbol_cache.php b/phpunit/code/compiler_api/persistent_symbol_cache.php
new file mode 100644
index 00000000..2337c84f
--- /dev/null
+++ b/phpunit/code/compiler_api/persistent_symbol_cache.php
@@ -0,0 +1,15 @@
+<?php
+
+class PersistentSymbolCacheItem
+{
+    public int $value = 1;
+}
+
+function exercise_persistent_symbol_cache(
+    DateTime $date,
+    PersistentSymbolCacheItem $item,
+): string {
+    ob_start();
+    echo $date->format('Y-m-d'), $item->value;
+    return ob_get_clean();
+}
diff --git a/phpunit/src/Backend/BackendOptionsTest.php b/phpunit/src/Backend/BackendOptionsTest.php
index 64901a27..240848e5 100644
--- a/phpunit/src/Backend/BackendOptionsTest.php
+++ b/phpunit/src/Backend/BackendOptionsTest.php
@@ -248,6 +248,16 @@ class BackendOptionsTest extends TestCase
         $this->assertStringContainsString('-std=c++17', $options);
     }
 
+    public function testGccExtensionSymbolsAreHiddenByDefault(): void
+    {
+        $compiler = new Gcc(new Linux());
+        $options = $compiler->buildCompileOptions([
+            'build_mode' => 'ext',
+        ]);
+
+        $this->assertStringContainsString('-fvisibility=hidden', $options);
+    }
+
     /**
      * 测试 GCC 编译选项 - 调试模式
      */
diff --git a/phpunit/src/CompilerBaseApiTest.php b/phpunit/src/CompilerBaseApiTest.php
index 0483760c..a4e6d1e6 100644
--- a/phpunit/src/CompilerBaseApiTest.php
+++ b/phpunit/src/CompilerBaseApiTest.php
@@ -936,12 +936,45 @@ YAML);
         $this->assertStringContainsString('#include <cstring>', $code);
         $this->assertStringContainsString('std::memset(php_func_map, 0, sizeof(php_func_map));', $code);
         $this->assertStringContainsString('std::memset(php_class_map, 0, sizeof(php_class_map));', $code);
-        $this->assertStringContainsString('std::memset(php_property_map, 0, sizeof(php_property_map));', $code);
+        $this->assertStringNotContainsString('php_property_map', $code);
         $this->assertStringNotContainsString('func_map = {}', $code);
         $this->assertStringNotContainsString('class_map = {}', $code);
         $this->assertStringNotContainsString('property_map = {}', $code);
     }
 
+    public function testPersistentSymbolCachesAreLazyAndZtsSafe(): void
+    {
+        global $translator;
+        $compiler = CompilerTest::create(ROOT_PATH);
+        $translator = $compiler;
+        $compiler->setBuildMode(CompilerBase::BUILD_MODE_EXT);
+
+        $testFile = ROOT_PATH . '/phpunit/code/compiler_api/persistent_symbol_cache.php';
+        $compiler->addFiles([$testFile]);
+        $compiler->prepareFile($testFile);
+        $compiler->convertFile($testFile);
+
+        $dataFile = $this->testDir . '/persistent_symbol_cache_data_decl.h';
+        $compiler->genDataDeclarations($dataFile);
+        $data = file_get_contents($dataFile);
+        $extension = file_get_contents($compiler->genExtension());
+
+        $this->assertStringContainsString('extern php::PersistentCacheSlot<zend_class_entry *>', $data);
+        $this->assertStringContainsString('extern php::PersistentCacheSlot<zend_function *>', $data);
+        $this->assertStringContainsString('extern php::PersistentCacheSlot<uint32_t>', $data);
+        $this->assertStringContainsString('php_persistent_class_map', $data);
+        $this->assertStringContainsString('php_get_persistent_class', $extension);
+        $this->assertStringContainsString('php::getPersistentCache(php_persistent_class_map[class_id]', $extension);
+        $this->assertStringContainsString('for (auto &slot : php_persistent_class_map)', $extension);
+        $this->assertStringContainsString('php::resetPersistentCache(slot);', $extension);
+        $this->assertStringNotContainsString('#ifdef ZTS', $data);
+        $this->assertStringNotContainsString('compare_exchange_strong', $extension);
+        $this->assertStringNotContainsString('// internal symbol caches', $extension);
+        $this->assertStringNotContainsString('php_find_internal_function', $extension);
+        $this->assertStringNotContainsString('php_find_internal_method', $extension);
+        $this->assertStringNotContainsString('php_internal_', $extension);
+    }
+
     public function testArrayableKeywordConversionCallsGeneratedMethodAtRuntime(): void
     {
         global $translator;
diff --git a/src/Backend/GccLikeBackend.php b/src/Backend/GccLikeBackend.php
index 0472b239..a279a4ff 100644
--- a/src/Backend/GccLikeBackend.php
+++ b/src/Backend/GccLikeBackend.php
@@ -102,7 +102,8 @@ abstract class GccLikeBackend extends CompilerBackend
 
         $cmd .= $this->getPICFlag($config);
 
-        if (($config['build_mode'] ?? null) === 'lib' && !($this->platform instanceof Windows)) {
+        if (in_array(($config['build_mode'] ?? null), ['ext', 'lib'], true)
+            && !($this->platform instanceof Windows)) {
             $cmd .= ' -fvisibility=hidden';
         }
 
diff --git a/src/CompilerBase.php b/src/CompilerBase.php
index 380ae538..52be7072 100644
--- a/src/CompilerBase.php
+++ b/src/CompilerBase.php
@@ -238,10 +238,9 @@ class CompilerBase implements PropertyAccessContext
     public const string OBJECT_PROP = '_object_prop_';
     public const string CLASS_MAP = 'class_map';
     public const string FUNC_MAP = 'func_map';
-    public const string PROP_MAP = 'property_map';
-    public const string INTERNAL_CLASS_MAP = 'internal_class_map';
-    public const string INTERNAL_FUNC_MAP = 'internal_func_map';
-    public const string INTERNAL_PROP_MAP = 'internal_property_map';
+    public const string PERSISTENT_CLASS_MAP = 'persistent_class_map';
+    public const string PERSISTENT_FUNC_MAP = 'persistent_func_map';
+    public const string PERSISTENT_PROP_MAP = 'persistent_property_map';
     public const string NAMESPACE_SEPARATOR = '__';
 
     public const string PREFIX = 'php_';
@@ -255,7 +254,6 @@ class CompilerBase implements PropertyAccessContext
     public const string BUILD_MODE_EXT = 'ext';
     public const string BUILD_MODE_LIB = 'lib';
     public const string ENTRY_FUNCTION = 'main';
-    public const string PHPX_VENDOR_DIR = '/vendor/swoole/phpx';
     protected const string PHASE_IDLE = 'idle';
     protected const string PHASE_PREPARE = 'prepare';
     protected const string PHASE_CONVERT = 'convert';
@@ -278,11 +276,11 @@ class CompilerBase implements PropertyAccessContext
      */
     protected array $classMap = [];
     /**
-     * 内置/编译产物（进程生命周期）类名 → ID，运行期为全局缓存，MINIT 填充，永不清理
+     * 内置/编译产物（模块生命周期）类名 → ID，PHP 启动完成后惰性填充，RSHUTDOWN 不清理
      * @var array<string, int>
      */
-    protected array $internalClassMap = [];
-    protected int $internalClassIndex = 0;
+    protected array $persistentClassMap = [];
+    protected int $persistentClassIndex = 0;
     /**
      * @var array<string, int>
      */
@@ -296,22 +294,18 @@ class CompilerBase implements PropertyAccessContext
      */
     protected array $funcMap = [];
     /**
-     * 内置/编译产物（进程生命周期）函数/方法 → ID，运行期为全局缓存，MINIT 填充，永不清理
+     * 内置/编译产物（模块生命周期）函数/方法 → ID，PHP 启动完成后惰性填充，RSHUTDOWN 不清理
      * key 为函数名或 `Class::method`
      * @var array<string, int>
      */
-    protected array $internalFuncMap = [];
-    protected int $internalFuncIndex = 0;
-    protected int $propIndex = 0;
+    protected array $persistentFuncMap = [];
+    protected int $persistentFuncIndex = 0;
     /**
-     * 用户定义类的属性 offset 缓存，key 为 `Class::prop`，RSHUTDOWN 清理
+     * 内置/编译产物类的声明属性 offset 缓存，key 为 `Class::prop`，惰性填充，RSHUTDOWN 不清理。
+     * 属性解析仅覆盖编译类与内置类的声明属性（进程级稳定），用户类属性走字符串路径，不进缓存。
      */
-    protected array $propMap = [];
-    /**
-     * 内置/编译产物类的属性 offset 缓存，key 为 `Class::prop`，MINIT 填充，永不清理
-     */
-    protected array $internalPropMap = [];
-    protected int $internalPropIndex = 0;
+    protected array $persistentPropMap = [];
+    protected int $persistentPropIndex = 0;
     protected const array PHP_RUNTIME_TYPE_MAP = [
         'integer' => Type::INT,
         'double' => Type::FLOAT,
@@ -1223,7 +1217,7 @@ class CompilerBase implements PropertyAccessContext
     }
 
     /**
-     * 判断类的符号指针是否进程级稳定（MINIT 注册，跨请求缓存安全）。
+     * 判断类的符号指针是否在 PHP 模块生命周期内稳定（MINIT 注册，跨请求缓存安全）。
      * 编译产物（本单元编译的类/接口）与 PHP 内置类/接口均满足条件。
      */
     protected function isProcessStableClass(string $className): bool
@@ -1236,7 +1230,7 @@ class CompilerBase implements PropertyAccessContext
     }
 
     /**
-     * 判断函数/方法符号指针是否进程级稳定。
+     * 判断函数/方法符号指针是否在 PHP 模块生命周期内稳定。
      * `Class::method` 形式的 key 以其所属类的稳定性为准。
      */
     protected function isProcessStableFunction(string $funcName): bool
@@ -1257,12 +1251,12 @@ class CompilerBase implements PropertyAccessContext
         if (isset($this->classMap[$className])) {
             return $this->classMap[$className];
         }
-        if (isset($this->internalClassMap[$className])) {
-            return $this->internalClassMap[$className];
+        if (isset($this->persistentClassMap[$className])) {
+            return $this->persistentClassMap[$className];
         }
         if ($this->isProcessStableClass($className)) {
-            $id = $this->internalClassIndex++;
-            $this->internalClassMap[$className] = $id;
+            $id = $this->persistentClassIndex++;
+            $this->persistentClassMap[$className] = $id;
         } else {
             $id = $this->classIndex++;
             $this->classMap[$className] = $id;
@@ -1275,12 +1269,12 @@ class CompilerBase implements PropertyAccessContext
         if (isset($this->funcMap[$funcName])) {
             return $this->funcMap[$funcName];
         }
-        if (isset($this->internalFuncMap[$funcName])) {
-            return $this->internalFuncMap[$funcName];
+        if (isset($this->persistentFuncMap[$funcName])) {
+            return $this->persistentFuncMap[$funcName];
         }
         if ($this->isProcessStableFunction($funcName)) {
-            $id = $this->internalFuncIndex++;
-            $this->internalFuncMap[$funcName] = $id;
+            $id = $this->persistentFuncIndex++;
+            $this->persistentFuncMap[$funcName] = $id;
         } else {
             $id = $this->funcIndex++;
             $this->funcMap[$funcName] = $id;
@@ -1290,30 +1284,28 @@ class CompilerBase implements PropertyAccessContext
 
     /**
      * @param string $className 必须是带有命名空间的完整类名
+     *
+     * 注意：不存在与用户定义类对应的动态 propMap（区别于 classMap/funcMap）。
+     * 属性 offset 缓存的前提是编译期能解析出声明属性（PropertyAccessResolver
+     * 只接受编译类的 ClassDef 或内置类的反射声明属性），用户类在编译期不可见，
+     * 其属性访问一律走 `.attr(name)` 字符串路径，因此所有条目必然进程级稳定，
+     * 全部进入 persistentPropMap。
      */
     protected function getPropertyId(string $className, string $propName): int
     {
         $key = $className . '::' . $propName;
-        if (isset($this->propMap[$key])) {
-            return $this->propMap[$key];
-        }
-        if (isset($this->internalPropMap[$key])) {
-            return $this->internalPropMap[$key];
-        }
-        if ($this->isProcessStableClass($className)) {
-            $id = $this->internalPropIndex++;
-            $this->internalPropMap[$key] = $id;
-        } else {
-            $id = $this->propIndex++;
-            $this->propMap[$key] = $id;
+        if (isset($this->persistentPropMap[$key])) {
+            return $this->persistentPropMap[$key];
         }
+        $id = $this->persistentPropIndex++;
+        $this->persistentPropMap[$key] = $id;
         return $id;
     }
 
     protected function getClassEntryPtr(string $className): string
     {
         $id = $this->getClassId($className);
-        $helper = isset($this->internalClassMap[$className]) ? 'php_get_internal_class' : 'php_get_class';
+        $helper = isset($this->persistentClassMap[$className]) ? 'php_get_persistent_class' : 'php_get_class';
         return $helper . '(' . $id . ', ' . $this->getLiteralString($className) . ')';
     }
 
@@ -1330,7 +1322,7 @@ class CompilerBase implements PropertyAccessContext
     protected function getFuncPtr(string $funcName): string
     {
         $id = $this->getFuncId($funcName);
-        $helper = isset($this->internalFuncMap[$funcName]) ? 'php_get_internal_func' : 'php_get_func';
+        $helper = isset($this->persistentFuncMap[$funcName]) ? 'php_get_persistent_func' : 'php_get_func';
         return $helper . '(' . $id . ', ' . $this->getLiteralString($funcName) . ')';
     }
 
@@ -1339,7 +1331,7 @@ class CompilerBase implements PropertyAccessContext
         $funcId = $this->getFuncId($class . '::' . $method);
         $classId = $this->getClassId($class);
         // 方法的稳定性与所属类一致，因此 class_id 必定落在同一张表中
-        $helper = isset($this->internalFuncMap[$class . '::' . $method]) ? 'php_get_internal_method' : 'php_get_method';
+        $helper = isset($this->persistentFuncMap[$class . '::' . $method]) ? 'php_get_persistent_method' : 'php_get_method';
         return $helper . '(' . $funcId . ', ' . $this->getLiteralString($method) . ', ' . $classId . ', ' . $this->getLiteralString($class) . ')';
     }
 
@@ -1347,8 +1339,7 @@ class CompilerBase implements PropertyAccessContext
     {
         $propId = $this->getPropertyId($class, $prop);
         $classId = $this->getClassId($class);
-        $helper = isset($this->internalPropMap[$class . '::' . $prop]) ? 'php_get_internal_prop' : 'php_get_prop';
-        return $helper . '(' . $propId . ', ' . $this->getLiteralString($prop) . ', ' . $classId . ', ' . $this->getLiteralString($class) . ')';
+        return 'php_get_persistent_prop(' . $propId . ', ' . $this->getLiteralString($prop) . ', ' . $classId . ', ' . $this->getLiteralString($class) . ')';
     }
 
     protected function writeLog($msg): void
diff --git a/src/Resolver/PropertyAccessResolver.php b/src/Resolver/PropertyAccessResolver.php
index 8fc6588c..8ae4263d 100644
--- a/src/Resolver/PropertyAccessResolver.php
+++ b/src/Resolver/PropertyAccessResolver.php
@@ -8,7 +8,11 @@
 
 namespace TypePhp\Resolver;
 
+use PhpParser\Modifiers;
 use PhpParser\NodeAbstract;
+use TypePhp\Entity\ClassDef;
+use TypePhp\Entity\PropertyDef;
+use TypePhp\Type;
 
 final class PropertyAccessResolver
 {
@@ -57,7 +61,8 @@ final class PropertyAccessResolver
         while (true) {
             $classDef = $this->compiler->getClassDef($findClass);
             if ($classDef === null) {
-                break;
+                // 非编译单元内的类：尝试按内置类的声明属性解析（offset 缓存）
+                return $this->resolveInternalClassProperty($expr, $property, $findClass, $class, $scope, $static);
             }
 
             if ($classDef->hasProperty($property)) {
@@ -145,6 +150,112 @@ final class PropertyAccessResolver
         return $resolved;
     }
 
+    /**
+     * 解析 PHP 内置类的声明属性，使其可以进入稳定属性 offset 缓存。
+     *
+     * 仅处理反射可见的声明属性：动态属性、魔术属性（__get/__set）反射不可见，
+     * 返回 null 回退到按名字符串查找路径。内置类在 MINIT 注册、进程级存活，
+     * 其声明属性的 offset 终身不变，缓存安全。
+     */
+    private function resolveInternalClassProperty(
+        NodeAbstract $expr,
+        string $property,
+        string $findClass,
+        string $requestedClass,
+        string $scope,
+        bool $static,
+    ): ?PropertyAccessResult {
+        $ref = Reflection::getClass($findClass);
+        if ($ref === null || !$ref->isInternal()) {
+            return null;
+        }
+        if (!$ref->hasProperty($property)) {
+            return null;
+        }
+        $propRef = $ref->getProperty($property);
+        // PHP 8.4 属性钩子必须由引擎调用，offset 直读会绕过钩子，回退字符串路径
+        if ($propRef->hasHooks()) {
+            return null;
+        }
+        if (!$static && $propRef->isStatic()) {
+            $this->fatal($expr, "Cannot access static property `{$requestedClass}::\${$property}` as non-static instance property.");
+        }
+        if ($static && !$propRef->isStatic()) {
+            $this->fatal($expr, "Cannot access non-static property `{$requestedClass}::\${$property}` as static property.");
+        }
+
+        $declaringClass = $propRef->getDeclaringClass()->getName();
+        if ($propRef->isProtected()) {
+            if (!$this->canAccessProtectedProperty($scope, $declaringClass)) {
+                $displayClass = ltrim($requestedClass, '\\');
+                $this->fatal($expr, "Cannot access protected property `{$property}` of class `{$displayClass}`");
+            }
+        } elseif ($propRef->isPrivate() && !$this->isSameClassName($scope, $declaringClass)) {
+            $displayClass = ltrim($requestedClass, '\\');
+            $this->fatal($expr, "Cannot access private property `{$property}` of class `{$displayClass}`");
+        }
+
+        // 复合类型（union/intersection）的运行时检查结构依赖 AST 构建，
+        // 无法从反射便捷还原，回退字符串路径以保证类型安全
+        $propType = $propRef->getType();
+        if ($propType !== null && !$propType instanceof \ReflectionNamedType) {
+            return null;
+        }
+
+        $type = Type::VAR;
+        $nullable = true;
+        $objectClass = '';
+        if ($propType instanceof \ReflectionNamedType) {
+            $nullable = $propType->allowsNull();
+            $typeName = $propType->getName();
+            $type = match ($typeName) {
+                'int' => Type::INT,
+                'float' => Type::FLOAT,
+                'bool', 'true', 'false' => Type::BOOL,
+                'string' => Type::STR,
+                'array' => Type::ARRAY,
+                'object' => Type::OBJECT,
+                default => $propType->isBuiltin() ? Type::VAR : Type::OBJECT,
+            };
+            if ($type === Type::OBJECT && $typeName !== 'object') {
+                $objectClass = $typeName;
+            }
+        }
+
+        $flags = 0;
+        if ($propRef->isPublic()) {
+            $flags |= Modifiers::PUBLIC;
+        }
+        if ($propRef->isProtected()) {
+            $flags |= Modifiers::PROTECTED;
+        }
+        if ($propRef->isPrivate()) {
+            $flags |= Modifiers::PRIVATE;
+        }
+        if ($propRef->isStatic()) {
+            $flags |= Modifiers::STATIC;
+        }
+        if ($propRef->isPrivateSet()) {
+            $flags |= Modifiers::PRIVATE_SET;
+        } elseif ($propRef->isProtectedSet()) {
+            $flags |= Modifiers::PROTECTED_SET;
+        }
+
+        $propertyDef = new PropertyDef($property, $flags, $type, null, $nullable);
+        $propertyDef->readonly = $propRef->isReadOnly();
+        $propertyDef->class = $objectClass;
+
+        $declaringName = $declaringClass;
+        $namespace = '';
+        if (($pos = strrpos($declaringName, '\\')) !== false) {
+            $namespace = substr($declaringName, 0, $pos);
+            $declaringName = substr($declaringName, $pos + 1);
+        }
+        $classDef = new ClassDef($declaringName, 0, $namespace);
+
+        return new PropertyAccessResult($requestedClass, $declaringClass, $property, $classDef, $propertyDef);
+    }
+
     private function fatal(NodeAbstract $expr, string $message): never
     {
         $this->compiler->fatalError($expr, $message);
diff --git a/src/Translator.php b/src/Translator.php
index 43a2684c..dba70bf4 100644
--- a/src/Translator.php
+++ b/src/Translator.php
@@ -720,6 +720,7 @@ class Translator extends Preprocessor
     public function genDataDeclarations(string $file): void
     {
         $lines[] = '#include <phpx.h>';
+        $lines[] = '#include <typephp_helper.h>';
         $lines[] = PHP_EOL;
 
         // Embedded binaries populate the CLI script fields in $_SERVER at
@@ -744,23 +745,23 @@ class Translator extends Preprocessor
         // 确保数组大小至少为 1，避免 C/C++ 编译错误
         $classCount = max(1, count($this->classMap));
         $lines[] = 'extern THREAD_LOCAL zend_class_entry *' . self::PREFIX . self::CLASS_MAP . '[' . $classCount . '];' . PHP_EOL;
-        $internalClassCount = max(1, count($this->internalClassMap));
-        $lines[] = 'extern zend_class_entry *' . self::PREFIX . self::INTERNAL_CLASS_MAP . '[' . $internalClassCount . '];' . PHP_EOL;
+        $persistentClassCount = max(1, count($this->persistentClassMap));
+        $lines[] = 'extern php::PersistentCacheSlot<zend_class_entry *> ' . self::PREFIX . self::PERSISTENT_CLASS_MAP . '[' . $persistentClassCount . '];' . PHP_EOL;
 
         $funcCount = max(1, count($this->funcMap));
         $lines[] = 'extern THREAD_LOCAL zend_function *' . self::PREFIX . self::FUNC_MAP . '[' . $funcCount . '];' . PHP_EOL;
-        $internalFuncCount = max(1, count($this->internalFuncMap));
-        $lines[] = 'extern zend_function *' . self::PREFIX . self::INTERNAL_FUNC_MAP . '[' . $internalFuncCount . '];' . PHP_EOL;
+        $persistentFuncCount = max(1, count($this->persistentFuncMap));
+        $lines[] = 'extern php::PersistentCacheSlot<zend_function *> ' . self::PREFIX . self::PERSISTENT_FUNC_MAP . '[' . $persistentFuncCount . '];' . PHP_EOL;
 
         $pythonModuleDeclarations = $this->genPythonModuleDataDeclarations();
         if ($pythonModuleDeclarations !== '') {
             $lines[] = $pythonModuleDeclarations;
         }
 
-        $propCount = max(1, count($this->propMap));
-        $lines[] = 'extern THREAD_LOCAL uint32_t ' . self::PREFIX . self::PROP_MAP . '[' . $propCount . '];' . PHP_EOL;
-        $internalPropCount = max(1, count($this->internalPropMap));
-        $lines[] = 'extern uint32_t ' . self::PREFIX . self::INTERNAL_PROP_MAP . '[' . $internalPropCount . '];' . PHP_EOL;
+        // 无动态 propMap：属性 offset 缓存仅覆盖编译类/内置类的声明属性（见 getPropertyId），
+        // 全部在模块生命周期内稳定，只保留 persistent prop map
+        $persistentPropCount = max(1, count($this->persistentPropMap));
+        $lines[] = 'extern php::PersistentCacheSlot<uint32_t> ' . self::PREFIX . self::PERSISTENT_PROP_MAP . '[' . $persistentPropCount . '];' . PHP_EOL;
 
         foreach ($this->getClassLikesWithConstants() as $classDef) {
             foreach ($classDef->constants as $constant) {
@@ -818,18 +819,20 @@ class Translator extends Preprocessor
         $code .= "// class entry \n";
         // 确保数组大小至少为 1，避免 C/C++ 编译错误
         $code .= 'THREAD_LOCAL zend_class_entry *' . self::PREFIX . self::CLASS_MAP . '[' . max(1, count($this->classMap)) . '];' . PHP_EOL;
-        // 内置/编译产物类，进程级缓存，MINIT 填充，无需 THREAD_LOCAL，RSHUTDOWN 不清理
-        $code .= 'zend_class_entry *' . self::PREFIX . self::INTERNAL_CLASS_MAP . '[' . max(1, count($this->internalClassMap)) . '];' . PHP_EOL;
+        // Internal/compiled symbols have module lifetime. They are initialized
+        // lazily after PHP startup, so disable_functions/disable_classes have
+        // already finalized the runtime tables. ZTS publishes them atomically.
+        $code .= 'php::PersistentCacheSlot<zend_class_entry *> ' . self::PREFIX . self::PERSISTENT_CLASS_MAP . '[' . max(1, count($this->persistentClassMap)) . ']{};' . PHP_EOL;
 
         $code .= "// func \n";
         $code .= 'THREAD_LOCAL zend_function *' . self::PREFIX . self::FUNC_MAP . '[' . max(1, count($this->funcMap)) . '];' . PHP_EOL;
-        $code .= 'zend_function *' . self::PREFIX . self::INTERNAL_FUNC_MAP . '[' . max(1, count($this->internalFuncMap)) . '];' . PHP_EOL;
+        $code .= 'php::PersistentCacheSlot<zend_function *> ' . self::PREFIX . self::PERSISTENT_FUNC_MAP . '[' . max(1, count($this->persistentFuncMap)) . ']{};' . PHP_EOL;
 
         $code .= $this->genPythonModuleStorage();
 
         $code .= "// property \n";
-        $code .= 'THREAD_LOCAL uint32_t ' . self::PREFIX . self::PROP_MAP . '[' . max(1, count($this->propMap)) . '];' . PHP_EOL;
-        $code .= 'uint32_t ' . self::PREFIX . self::INTERNAL_PROP_MAP . '[' . max(1, count($this->internalPropMap)) . '];' . PHP_EOL;
+        // 无动态 propMap：属性 offset 缓存仅覆盖编译类/内置类的声明属性（见 getPropertyId）
+        $code .= 'php::PersistentCacheSlot<uint32_t> ' . self::PREFIX . self::PERSISTENT_PROP_MAP . '[' . max(1, count($this->persistentPropMap)) . ']{};' . PHP_EOL;
 
         $code .= "// functions \n";
 
@@ -856,67 +859,34 @@ zend_function *php_get_method(int func_id, const php::Str &method_name, int clas
     return php_func_map[func_id];
 }
 
-uint32_t php_get_prop(int prop_id, const php::Str &prop_name, int class_id, const php::Str &class_name) {
-    if (UNEXPECTED(php_property_map[prop_id] == 0)) {
-        php_property_map[prop_id] = php::getPropertyOffset(class_name, prop_name) + 1024;
-    }
-    return php_property_map[prop_id] - 1024;
+zend_class_entry *php_get_persistent_class(int class_id, const php::Str &class_name) {
+    return php::getPersistentCache(php_persistent_class_map[class_id], [&]() {
+        return php::getClassEntrySafe(class_name);
+    });
 }
 
-zend_class_entry *php_get_internal_class(int class_id, const php::Str &class_name) {
-    if (UNEXPECTED(php_internal_class_map[class_id] == nullptr)) {
-        php_internal_class_map[class_id] = php::getClassEntrySafe(class_name);
-    }
-    return php_internal_class_map[class_id];
+zend_function *php_get_persistent_func(int func_id, const php::Str &func_name) {
+    return php::getPersistentCache(php_persistent_func_map[func_id], [&]() {
+        return php::getFunction(func_name);
+    });
 }
 
-zend_function *php_get_internal_func(int func_id, const php::Str &func_name) {
-    if (UNEXPECTED(php_internal_func_map[func_id] == nullptr)) {
-        php_internal_func_map[func_id] = php::getFunction(func_name);
-    }
-    return php_internal_func_map[func_id];
+zend_function *php_get_persistent_method(int func_id, const php::Str &method_name, int class_id, const php::Str &class_name) {
+    return php::getPersistentCache(php_persistent_func_map[func_id], [&]() {
+        auto ce = php_get_persistent_class(class_id, class_name);
+        return php::getMethod(ce, method_name);
+    });
 }
 
-zend_function *php_get_internal_method(int func_id, const php::Str &method_name, int class_id, const php::Str &class_name) {
-    if (UNEXPECTED(php_internal_func_map[func_id] == nullptr)) {
-        auto ce = php_get_internal_class(class_id, class_name);
-        php_internal_func_map[func_id] = php::getMethod(ce, method_name);
-    }
-    return php_internal_func_map[func_id];
-}
-
-uint32_t php_get_internal_prop(int prop_id, const php::Str &prop_name, int class_id, const php::Str &class_name) {
-    if (UNEXPECTED(php_internal_property_map[prop_id] == 0)) {
-        php_internal_property_map[prop_id] = php::getPropertyOffset(class_name, prop_name) + 1024;
-    }
-    return php_internal_property_map[prop_id] - 1024;
+uint32_t php_get_persistent_prop(int prop_id, const php::Str &prop_name, int class_id, const php::Str &class_name) {
+    auto value = php::getPersistentCache(php_persistent_property_map[prop_id], [&]() {
+        return php::getPropertyOffset(class_name, prop_name) + 1024;
+    });
+    return value - 1024;
 }
 CODE;
         $code .= "\n\n";
 
-        // MINIT 阶段填充内部符号缓存使用的容错查找函数（查找失败返回空，留给运行期惰性重试）
-        if ($this->internalFuncMap !== []) {
-            $code .= <<<'CODE'
-static zend_function *php_find_internal_function(const php::Str &name) {
-    auto lc_name = zend_string_tolower(name.str());
-    auto fn = (zend_function *) zend_hash_find_ptr(CG(function_table), lc_name);
-    zend_string_release(lc_name);
-    return fn;
-}
-
-static zend_function *php_find_internal_method(zend_class_entry *ce, const php::Str &name) {
-    if (UNEXPECTED(ce == nullptr)) {
-        return nullptr;
-    }
-    auto lc_name = zend_string_tolower(name.str());
-    auto fn = (zend_function *) zend_hash_find_ptr(&ce->function_table, lc_name);
-    zend_string_release(lc_name);
-    return fn;
-}
-CODE;
-            $code .= "\n\n";
-        }
-
         $code .= $this->genPythonModuleGetter();
 
         $code .= "// literal strings \n";
@@ -998,13 +968,23 @@ CODE;
         foreach ($this->registerSymbols as $registerSymbolFn) {
             $code .= $registerSymbolFn . '(module_number);' . PHP_EOL;
         }
-        $code .= $this->genInternalSymbolCacheInit();
         $code .= '} zend_end_try();' . PHP_EOL;
         $code .= 'return SUCCESS;' . PHP_EOL;
         $code .= '}' . PHP_EOL . PHP_EOL;
         // minit end
 
         $code .= 'PHP_MSHUTDOWN_FUNCTION(' . $this->getModuleName() . ') {' . PHP_EOL;
+        // The cache owns no Zend symbols, but its pointers must not survive a
+        // complete module shutdown/startup cycle in an embedded process.
+        $code .= 'for (auto &slot : ' . self::PREFIX . self::PERSISTENT_CLASS_MAP . ') {' . PHP_EOL;
+        $code .= $this->getIndent() . 'php::resetPersistentCache(slot);' . PHP_EOL;
+        $code .= '}' . PHP_EOL;
+        $code .= 'for (auto &slot : ' . self::PREFIX . self::PERSISTENT_FUNC_MAP . ') {' . PHP_EOL;
+        $code .= $this->getIndent() . 'php::resetPersistentCache(slot);' . PHP_EOL;
+        $code .= '}' . PHP_EOL;
+        $code .= 'for (auto &slot : ' . self::PREFIX . self::PERSISTENT_PROP_MAP . ') {' . PHP_EOL;
+        $code .= $this->getIndent() . 'php::resetPersistentCache(slot);' . PHP_EOL;
+        $code .= '}' . PHP_EOL;
         $code .= 'typephp_uninstall_reflection_attribute_handlers();' . PHP_EOL;
         $code .= 'return SUCCESS;' . PHP_EOL;
         $code .= '}' . PHP_EOL . PHP_EOL;
@@ -1136,12 +1116,12 @@ CODE;
             }
         }
 
-        // 扩展模式，需要在 RSHUTDOWN 阶段中清理用户定义的函数、类、属性缓存；
-        // 内置/编译产物符号在 internal_*_map 中，进程级存活，无需清理
+        // 扩展模式，需要在 RSHUTDOWN 阶段中清理用户定义的函数、类缓存；
+        // 内置/编译产物符号在 persistent_*_map 中，跨请求存活，无需清理；
+        // 无动态 propMap（属性 offset 缓存仅含进程级稳定的声明属性），无需清理
         if ($this->isBuildModeExt()) {
             $code .= 'std::memset(' . self::PREFIX . self::FUNC_MAP . ', 0, sizeof(' . self::PREFIX . self::FUNC_MAP . '));' . PHP_EOL;
             $code .= 'std::memset(' . self::PREFIX . self::CLASS_MAP . ', 0, sizeof(' . self::PREFIX . self::CLASS_MAP . '));' . PHP_EOL;
-            $code .= 'std::memset(' . self::PREFIX . self::PROP_MAP . ', 0, sizeof(' . self::PREFIX . self::PROP_MAP . '));' . PHP_EOL;
         }
 
         $code .= '}' . PHP_EOL . PHP_EOL;
@@ -1211,52 +1191,6 @@ CODE;
         return $file;
     }
 
-    /**
-     * 生成 MINIT 阶段填充内部符号缓存（进程级类/函数/属性）的代码。
-     * 类与函数使用容错查找：跨扩展符号可能因模块初始化顺序尚未注册，
-     * 查找失败时留空，由运行期 helper 惰性重试（此时抛错语义与拆分前一致）。
-     * 属性缓存的所属类必为本模块编译产物（已在上方注册完毕），直接调用 helper 填充。
-     */
-    protected function genInternalSymbolCacheInit(): string
-    {
-        if ($this->internalClassMap === [] && $this->internalFuncMap === [] && $this->internalPropMap === []) {
-            return '';
-        }
-        $code = '// internal symbol caches' . PHP_EOL;
-        foreach ($this->internalClassMap as $name => $id) {
-            $code .= self::PREFIX . self::INTERNAL_CLASS_MAP . '[' . $id . '] = php::getClassEntry('
-                . $this->genSymbolNameExpr($name) . ');' . PHP_EOL;
-        }
-        foreach ($this->internalFuncMap as $key => $id) {
-            if (str_contains($key, '::')) {
-                [$class, $method] = explode('::', $key, 2);
-                $code .= self::PREFIX . self::INTERNAL_FUNC_MAP . '[' . $id . '] = php_find_internal_method(php::getClassEntry('
-                    . $this->genSymbolNameExpr($class) . '), ' . $this->genSymbolNameExpr($method) . ');' . PHP_EOL;
-            } else {
-                $code .= self::PREFIX . self::INTERNAL_FUNC_MAP . '[' . $id . '] = php_find_internal_function('
-                    . $this->genSymbolNameExpr($key) . ');' . PHP_EOL;
-            }
-        }
-        foreach ($this->internalPropMap as $key => $id) {
-            [$class, $prop] = explode('::', $key, 2);
-            $code .= '(void) php_get_internal_prop(' . $id . ', ' . $this->genSymbolNameExpr($prop)
-                . ', 0, ' . $this->genSymbolNameExpr($class) . ');' . PHP_EOL;
-        }
-        return $code;
-    }
-
-    /**
-     * 生成符号名称的 C++ 表达式。优先复用字面量字符串表中的已有条目；
-     * 表条目在 MINIT 代码生成前已输出，缺失时（不应发生）退化为内联字符串。
-     */
-    private function genSymbolNameExpr(string $name): string
-    {
-        if (!$this->noLiteralStrings && isset($this->literalStrings[$name])) {
-            return self::LITERAL_STRINGS . '[' . $this->literalStrings[$name] . ']';
-        }
-        return Type::STR . '{ZEND_STRL(' . $this->genCharPtr($name, true) . '), true}';
-    }
-
     public function getModuleName(): string
     {
         return Constants::EXTENSION_PREFIX . $this->targetName;