diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c65528f0..22b427af2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,15 @@
 # v1.1.27 - TBD
 
-- [#1589](https://github.com/hyperf/hyperf/pull/1589) Fixed file locks not safe in coroutines.
+## Added
+
+- [#1575](https://github.com/hyperf/hyperf/pull/1575) Added document of property with relation, scope and attributes.
+- [#1586](https://github.com/hyperf/hyperf/pull/1586) Added conflict of symfony/event-dispatcher which < 4.3.
+
+## Fixed
+
+- [#1553](https://github.com/hyperf/hyperf/pull/1553) Fixed the rpc client do not work, when jsonrpc server register the same service to consul with jsonrpc and jsonrpc-http protocol.
+- [#1589](https://github.com/hyperf/hyperf/pull/1589) Fixed unsafe file locks in coroutines.
+- [#1607](https://github.com/hyperf/hyperf/pull/1607) Fixed bug that the return value of function `go` is not adaptive with `swoole`.
 
 # v1.1.26 - 2020-04-16
 
diff --git a/README-CN.md b/README-CN.md
index 6ac27e1d9..c99d8af3b 100644
--- a/README-CN.md
+++ b/README-CN.md
@@ -82,6 +82,21 @@ Hyperf 还提供了 `基于 PSR-11 的依赖注入容器`、`注解`、`AOP 面
 </table>
 <!--gold end-->
 
+# 性能
+
+### 阿里云 8 核 16G
+命令: `wrk -c 1024 -t 8 http://127.0.0.1:9501/`
+```bash
+Running 10s test @ http://127.0.0.1:9501/
+  8 threads and 1024 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency    10.08ms    6.82ms  56.66ms   70.19%
+    Req/Sec    13.17k     5.94k   33.06k    84.12%
+  1049478 requests in 10.10s, 190.16MB read
+Requests/sec: 103921.49
+Transfer/sec:     18.83MB
+```
+
 # 开源协议
 
 Hyperf 是一个基于 [MIT 协议](https://github.com/hyperf/hyperf/blob/master/LICENSE) 开源的软件。
diff --git a/README.md b/README.md
index ea538c826..1f7148b46 100644
--- a/README.md
+++ b/README.md
@@ -70,6 +70,21 @@ Support this project with your organization or company. Your logo will show up h
 </table>
 <!--gold end-->
 
+# Performance
+
+### Aliyun 8 cores 16G ram
+command: `wrk -c 1024 -t 8 http://127.0.0.1:9501/`
+```bash
+Running 10s test @ http://127.0.0.1:9501/
+  8 threads and 1024 connections
+  Thread Stats   Avg      Stdev     Max   +/- Stdev
+    Latency    10.08ms    6.82ms  56.66ms   70.19%
+    Req/Sec    13.17k     5.94k   33.06k    84.12%
+  1049478 requests in 10.10s, 190.16MB read
+Requests/sec: 103921.49
+Transfer/sec:     18.83MB
+```
+
 # License
 
 The Hyperf framework is open-source software licensed under the MIT license.
diff --git a/composer.json b/composer.json
index 440d34667..6ca77c896 100644
--- a/composer.json
+++ b/composer.json
@@ -73,6 +73,7 @@
         "swoole/ide-helper": "dev-master",
         "sy-records/think-template": "^2.0",
         "symfony/console": "^4.2",
+        "symfony/event-dispatcher": "^4.3",
         "symfony/finder": "^4.1",
         "symfony/property-access": "^4.3",
         "symfony/serializer": "^4.3",
@@ -135,6 +136,9 @@
         "hyperf/websocket-server": "self.version"
     },
     "suggest": {},
+    "conflict": {
+        "symfony/event-dispatcher": "<4.3"
+    },
     "autoload": {
         "files": [
             "src/config/src/Functions.php",
diff --git a/doc/zh-cn/amqp.md b/doc/zh-cn/amqp.md
index 031f00a71..eef64a90a 100644
--- a/doc/zh-cn/amqp.md
+++ b/doc/zh-cn/amqp.md
@@ -47,7 +47,7 @@ return [
             'login_response' => null,
             'locale' => 'en_US',
             'connection_timeout' => 3.0,
-            'read_write_timeout' => 3.0,
+            'read_write_timeout' => 6.0,
             'context' => null,
             'keepalive' => false,
             'heartbeat' => 3,
diff --git a/doc/zh-cn/filesystem.md b/doc/zh-cn/filesystem.md
index 9bae2b381..296484eaa 100644
--- a/doc/zh-cn/filesystem.md
+++ b/doc/zh-cn/filesystem.md
@@ -39,14 +39,23 @@ declare(strict_types=1);
 
 namespace App\Controller;
 
-class IndexController
+class IndexController extends AbstractController
 {
     public function example(\League\Flysystem\Filesystem $filesystem)
     {
+        // Process Upload
+        $file = $this->request->file('upload');
+        $stream = fopen($file->getRealPath(), 'r+');
+        $filesystem->writeStream(
+            'uploads/'.$file->getClientFilename(),
+            $stream
+        );
+        fclose($stream);
+        
         // Write Files
         $filesystem->write('path/to/file.txt', 'contents');
 
-        // Write Use writeStream
+        // Add local file
         $stream = fopen('local/path/to/file.txt', 'r+');
         $result = $filesystem->writeStream('path/to/file.txt', $stream);
         if (is_resource($stream)) {
@@ -122,7 +131,8 @@ return [
 
 1. S3 存储请确认安装 `hyperf/guzzle` 组件以提供协程化支持。阿里云、七牛云存储请[开启 Curl Hook](/zh-cn/coroutine?id=swoole-runtime-hook-level)来使用协程。因 Curl Hook 的参数支持性问题，请使用 Swoole 4.4.13 以上版本。
 2. minIO, ceph radosgw 等私有对象存储方案均支持 S3 协议，可以使用 S3 适配器。
-3. 以阿里云 OSS 为例，1 核 1 进程读操作性能对比：
+3. 使用Local驱动时，根目录是配置好的地址，而不是操作系统的根目录。例如，Local驱动 `root` 设置为 `/var/www`, 则本地磁盘上的 `/var/www/public/file.txt` 通过 flysystem API 访问时应使用 `/public/file.txt` 或 `public/file.txt` 。
+4. 以阿里云 OSS 为例，1 核 1 进程读操作性能对比：
 
 ```bash
 ab -k -c 10 -n 1000 http://127.0.0.1:9501/
diff --git a/doc/zh-cn/quick-start/questions.md b/doc/zh-cn/quick-start/questions.md
index 6a9547812..349975573 100644
--- a/doc/zh-cn/quick-start/questions.md
+++ b/doc/zh-cn/quick-start/questions.md
@@ -62,30 +62,6 @@ vendor/bin/init-proxy.sh && composer test
 vendor/bin/init-proxy.sh && php bin/hyperf.php start
 ```
 
-## PHP7.3 下预先生成代理的脚本 执行失败
-
-`php bin/hyperf.php di:init-proxy` 脚本在 `PHP7.3` 的 `Docker` 打包时，会因为返回码是 `1` 而失败。
-
-> 具体原因还在定位中
-
-以下通过重写 `init-proxy.sh` 脚本绕过这个问题。
-
-```bash
-#!/usr/bin/env bash
-
-php /opt/www/bin/hyperf.php di:init-proxy
-
-echo Started.
-```
-
-对应的 `Dockerfile` 修改以下代码，省略无用的代码展示。
-
-```dockerfile
-RUN composer install --no-dev \
-    && composer dump-autoload -o \
-    && ./init-proxy.sh
-```
-
 ## 异步队列消息丢失
 
 如果在使用 `async-queue` 组件时，发现 `handle` 中的方法没有执行，请先检查以下几种情况：
@@ -97,3 +73,27 @@ RUN composer install --no-dev \
 
 1. killall php
 2. 修改 `async-queue` 配置 `channel`
+
+## 1.1.24 - 1.1.26 版本 SymfonyEventDispatcher 报错
+
+因为 `symfony/console` 默认使用的 `^4.2` 版本，而 `symfony/event-dispatcher` 的 `^4.3` 版本与 `<4.3` 版本不兼容。
+
+`hyperf/framework` 默认推荐使用 `^4.3` 版本的 `symfony/event-dispatcher`，就有一定概率导致实现上的冲突。
+
+如果有类似的情况出现，可以尝试以下操作
+
+```
+rm -rf vendor
+rm -rf composer.lock
+composer require "symfony/event-dispatcher:^4.3"
+```
+
+1.1.27 版本中，会在 `composer.json` 中添加以下配置，来处理这个问题。
+
+```
+    "conflict": {
+        "symfony/event-dispatcher": "<4.3"
+    },
+```
+
+
diff --git a/doc/zh-cn/tutorial/docker-swarm.md b/doc/zh-cn/tutorial/docker-swarm.md
index a806cdc6c..055a20731 100644
--- a/doc/zh-cn/tutorial/docker-swarm.md
+++ b/doc/zh-cn/tutorial/docker-swarm.md
@@ -6,6 +6,7 @@
 
 ```
 curl -sSL https://get.daocloud.io/docker | sh
+# curl -sSL https://get.docker.com/ | sh
 ```
 
 修改文件 `/lib/systemd/system/docker.service`，允许使用 `TCP` 连接 `Docker`
diff --git a/src/amqp/publish/amqp.php b/src/amqp/publish/amqp.php
index dd5bc8c06..21651e29b 100644
--- a/src/amqp/publish/amqp.php
+++ b/src/amqp/publish/amqp.php
@@ -12,7 +12,7 @@ declare(strict_types=1);
 return [
     'default' => [
         'host' => env('AMQP_HOST', 'localhost'),
-        'port' => env('AMQP_PORT', 5672),
+        'port' => (int) env('AMQP_PORT', 5672),
         'user' => env('AMQP_USER', 'guest'),
         'password' => env('AMQP_PASSWORD', 'guest'),
         'vhost' => env('AMQP_VHOST', '/'),
diff --git a/src/database/composer.json b/src/database/composer.json
index d25704a7a..55b3e8055 100644
--- a/src/database/composer.json
+++ b/src/database/composer.json
@@ -30,7 +30,7 @@
     },
     "suggest": {
         "doctrine/dbal": "Required to rename columns (^2.6).",
-        "nikic/php-parser": "Required to use ModelCommand (^4.1)."
+        "roave/better-reflection": "Required to use ModelCommand (^4.0)."
     },
     "autoload": {
         "psr-4": {
diff --git a/src/database/src/Commands/Ast/ModelUpdateVisitor.php b/src/database/src/Commands/Ast/ModelUpdateVisitor.php
index 94b4d5f12..c115e4c35 100644
--- a/src/database/src/Commands/Ast/ModelUpdateVisitor.php
+++ b/src/database/src/Commands/Ast/ModelUpdateVisitor.php
@@ -12,13 +12,51 @@ declare(strict_types=1);
 namespace Hyperf\Database\Commands\Ast;
 
 use Hyperf\Database\Commands\ModelOption;
+use Hyperf\Database\Model\Builder;
+use Hyperf\Database\Model\Collection;
+use Hyperf\Database\Model\Model;
+use Hyperf\Database\Model\Relations\BelongsTo;
+use Hyperf\Database\Model\Relations\BelongsToMany;
+use Hyperf\Database\Model\Relations\HasMany;
+use Hyperf\Database\Model\Relations\HasManyThrough;
+use Hyperf\Database\Model\Relations\HasOne;
+use Hyperf\Database\Model\Relations\HasOneThrough;
+use Hyperf\Database\Model\Relations\MorphMany;
+use Hyperf\Database\Model\Relations\MorphOne;
+use Hyperf\Database\Model\Relations\MorphTo;
+use Hyperf\Database\Model\Relations\MorphToMany;
+use Hyperf\Database\Model\Relations\Relation;
 use Hyperf\Utils\Str;
 use PhpParser\Comment\Doc;
 use PhpParser\Node;
 use PhpParser\NodeVisitorAbstract;
+use Roave\BetterReflection\BetterReflection;
+use Roave\BetterReflection\Reflection\ReflectionClass;
+use Roave\BetterReflection\Reflection\ReflectionMethod;
+use Roave\BetterReflection\Reflector\ClassReflector;
+use Roave\BetterReflection\TypesFinder\FindReturnType;
 
 class ModelUpdateVisitor extends NodeVisitorAbstract
 {
+    const RELATION_METHODS = [
+        'hasMany' => HasMany::class,
+        'hasManyThrough' => HasManyThrough::class,
+        'hasOneThrough' => HasOneThrough::class,
+        'belongsToMany' => BelongsToMany::class,
+        'hasOne' => HasOne::class,
+        'belongsTo' => BelongsTo::class,
+        'morphOne' => MorphOne::class,
+        'morphTo' => MorphTo::class,
+        'morphMany' => MorphMany::class,
+        'morphToMany' => MorphToMany::class,
+        'morphedByMany' => MorphToMany::class,
+    ];
+
+    /**
+     * @var string
+     */
+    protected $class;
+
     /**
      * @var array
      */
@@ -29,31 +67,48 @@ class ModelUpdateVisitor extends NodeVisitorAbstract
      */
     protected $option;
 
-    public function __construct($columns = [], ModelOption $option)
+    /**
+     * @var array
+     */
+    protected $methods = [];
+
+    /**
+     * @var array
+     */
+    protected $properties = [];
+
+    /**
+     * @deprecated v2.0
+     * @var ClassReflector
+     */
+    protected static $reflector;
+
+    /**
+     * @deprecated v2.0
+     * @var FindReturnType
+     */
+    protected static $return;
+
+    public function __construct($class, $columns, ModelOption $option)
     {
+        $this->class = $class;
         $this->columns = $columns;
         $this->option = $option;
+        $this->initPropertiesFromMethods();
     }
 
     public function leaveNode(Node $node)
     {
         switch ($node) {
             case $node instanceof Node\Stmt\PropertyProperty:
-                if ($node->name == 'fillable' && $this->option->isRefreshFillable()) {
+                if ((string) $node->name === 'fillable' && $this->option->isRefreshFillable()) {
                     $node = $this->rewriteFillable($node);
-                } elseif ($node->name == 'casts') {
+                } elseif ((string) $node->name === 'casts') {
                     $node = $this->rewriteCasts($node);
                 }
-
                 return $node;
             case $node instanceof Node\Stmt\Class_:
-                $doc = '/**' . PHP_EOL;
-                foreach ($this->columns as $column) {
-                    [$name, $type, $comment] = $this->getProperty($column);
-                    $doc .= sprintf(' * @property %s $%s %s', $type, $name, $comment) . PHP_EOL;
-                }
-                $doc .= ' */';
-                $node->setDocComment(new Doc($doc));
+                $node->setDocComment(new Doc($this->parseProperty()));
                 return $node;
         }
     }
@@ -91,6 +146,147 @@ class ModelUpdateVisitor extends NodeVisitorAbstract
         return $node;
     }
 
+    protected function parseProperty(): string
+    {
+        $doc = '/**' . PHP_EOL;
+        foreach ($this->columns as $column) {
+            [$name, $type, $comment] = $this->getProperty($column);
+            $doc .= sprintf(' * @property %s $%s %s', $type, $name, $comment) . PHP_EOL;
+        }
+        foreach ($this->properties as $name => $property) {
+            if ($property['read'] && $property['write']) {
+                $doc .= sprintf(' * @property %s $%s', $property['type'], $name) . PHP_EOL;
+                continue;
+            }
+            if ($property['read']) {
+                $doc .= sprintf(' * @property-read %s $%s', $property['type'], $name) . PHP_EOL;
+                continue;
+            }
+            if ($property['write']) {
+                $doc .= sprintf(' * @property-write %s $%s', $property['type'], $name) . PHP_EOL;
+                continue;
+            }
+        }
+        $doc .= ' */';
+        return $doc;
+    }
+
+    protected function initPropertiesFromMethods()
+    {
+        /** @var ReflectionClass $reflection */
+        $reflection = self::getReflector()->reflect($this->class);
+        $methods = $reflection->getImmediateMethods();
+        $namespace = $reflection->getDeclaringNamespaceAst();
+        if (empty($methods)) {
+            return;
+        }
+
+        sort($methods);
+        /** @var ReflectionMethod $method */
+        foreach ($methods as $method) {
+            if (Str::startsWith($method->getName(), 'get') && Str::endsWith($method->getName(), 'Attribute')) {
+                // Magic get<name>Attribute
+                $name = Str::snake(substr($method->getName(), 3, -9));
+                if (! empty($name)) {
+                    $type = self::getReturnFinder()->__invoke($method, $namespace);
+                    $this->setProperty($name, $type, true, null);
+                }
+                continue;
+            }
+
+            if (Str::startsWith($method->getName(), 'set') && Str::endsWith($method->getName(), 'Attribute')) {
+                // Magic set<name>Attribute
+                $name = Str::snake(substr($method->getName(), 3, -9));
+                if (! empty($name)) {
+                    $this->setProperty($name, null, null, true);
+                }
+                continue;
+            }
+
+            if (Str::startsWith($method->getName(), 'scope') && $method->getName() !== 'scopeQuery') {
+                $name = Str::camel(substr($method->getName(), 5));
+                if (! empty($name)) {
+                    $args = $method->getParameters();
+                    // Remove the first ($query) argument
+                    array_shift($args);
+                    $this->setMethod($name, [Builder::class, $method->getDeclaringClass()->getName()], $args);
+                }
+                continue;
+            }
+
+            if ($method->getNumberOfParameters() > 0) {
+                continue;
+            }
+
+            $return = $method->getReturnStatementsAst();
+            // Magic Relation
+            if (count($return) === 1 && $return[0] instanceof Node\Stmt\Return_) {
+                $expr = $return[0]->expr;
+                if (
+                    $expr instanceof Node\Expr\MethodCall
+                    && $expr->name instanceof Node\Identifier
+                    && is_string($expr->name->name)
+                    && isset($expr->args[0])
+                    && $expr->args[0] instanceof Node\Arg
+                ) {
+                    $name = $expr->name->name;
+                    if (array_key_exists($name, self::RELATION_METHODS)) {
+                        if ($expr->args[0]->value instanceof Node\Expr\ClassConstFetch) {
+                            $related = $expr->args[0]->value->class->toCodeString();
+                        } else {
+                            $related = (string) ($expr->args[0]->value);
+                        }
+
+                        if (strpos($name, 'Many') !== false) {
+                            // Collection or array of models (because Collection is Arrayable)
+                            $this->setProperty($method->getName(), [$this->getCollectionClass($related), $related . '[]'], true);
+                        } elseif ($name === 'morphTo') {
+                            // Model isn't specified because relation is polymorphic
+                            $this->setProperty($method->getName(), [Model::class], true);
+                        } else {
+                            // Single model is returned
+                            $this->setProperty($method->getName(), [$related], true);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    protected function setProperty(string $name, array $type = null, bool $read = null, bool $write = null, string $comment = '', bool $nullable = false)
+    {
+        if (! isset($this->properties[$name])) {
+            $this->properties[$name] = [];
+            $this->properties[$name]['type'] = 'mixed';
+            $this->properties[$name]['read'] = false;
+            $this->properties[$name]['write'] = false;
+            $this->properties[$name]['comment'] = (string) $comment;
+        }
+        if ($type !== null) {
+            if ($nullable) {
+                $type[] = 'null';
+            }
+            $this->properties[$name]['type'] = implode('|', array_unique($type));
+        }
+        if ($read !== null) {
+            $this->properties[$name]['read'] = $read;
+        }
+        if ($write !== null) {
+            $this->properties[$name]['write'] = $write;
+        }
+    }
+
+    protected function setMethod(string $name, array $type = [], array $arguments = [])
+    {
+        $methods = array_change_key_case($this->methods, CASE_LOWER);
+
+        if (! isset($methods[strtolower($name)])) {
+            $this->methods[$name] = [];
+            $this->methods[$name]['type'] = implode('|', $type);
+            $this->methods[$name]['arguments'] = $arguments;
+        }
+    }
+
     protected function getProperty($column): array
     {
         $name = $this->option->isCamelCase() ? Str::camel($column['column_name']) : $column['column_name'];
@@ -142,4 +338,35 @@ class ModelUpdateVisitor extends NodeVisitorAbstract
 
         return $cast;
     }
+
+    protected function getCollectionClass($className): string
+    {
+        // Return something in the very very unlikely scenario the model doesn't
+        // have a newCollection() method.
+        if (! method_exists($className, 'newCollection')) {
+            return Collection::class;
+        }
+
+        /** @var Model $model */
+        $model = new $className();
+        return '\\' . get_class($model->newCollection());
+    }
+
+    protected static function getReturnFinder(): FindReturnType
+    {
+        if (static::$return instanceof FindReturnType) {
+            return static::$return;
+        }
+
+        return static::$return = new FindReturnType();
+    }
+
+    protected static function getReflector(): ClassReflector
+    {
+        if (self::$reflector instanceof ClassReflector) {
+            return self::$reflector;
+        }
+
+        return self::$reflector = (new BetterReflection())->classReflector();
+    }
 }
diff --git a/src/database/src/Commands/ModelCommand.php b/src/database/src/Commands/ModelCommand.php
index b055eee47..5bf05c3ac 100644
--- a/src/database/src/Commands/ModelCommand.php
+++ b/src/database/src/Commands/ModelCommand.php
@@ -183,6 +183,7 @@ class ModelCommand extends Command
         $stms = $this->astParser->parse(file_get_contents($path));
         $traverser = new NodeTraverser();
         $traverser->addVisitor(make(ModelUpdateVisitor::class, [
+            'class' => $class,
             'columns' => $columns,
             'option' => $option,
         ]));
diff --git a/src/devtool/src/Describe/RoutesCommand.php b/src/devtool/src/Describe/RoutesCommand.php
index 04d928d65..baf134ee7 100644
--- a/src/devtool/src/Describe/RoutesCommand.php
+++ b/src/devtool/src/Describe/RoutesCommand.php
@@ -101,15 +101,16 @@ class RoutesCommand extends HyperfCommand
         } else {
             $action = $handler->callback;
         }
-        if (isset($data[$uri])) {
-            $data[$uri]['method'][] = $method;
+        $unique = "{$serverName}|{$action}";
+        if (isset($data[$unique])) {
+            $data[$unique]['method'][] = $method;
         } else {
             // method,uri,name,action,middleware
             $registedMiddlewares = MiddlewareManager::get($serverName, $uri, $method);
             $middlewares = $this->config->get('middlewares.' . $serverName, []);
 
             $middlewares = array_merge($middlewares, $registedMiddlewares);
-            $data[$uri] = [
+            $data[$unique] = [
                 'server' => $serverName,
                 'method' => [$method],
                 'uri' => $uri,
diff --git a/src/framework/composer.json b/src/framework/composer.json
index da83d061d..1d064d0a3 100644
--- a/src/framework/composer.json
+++ b/src/framework/composer.json
@@ -40,6 +40,9 @@
         "hyperf/command": "Required to use Command annotation.",
         "symfony/event-dispatcher": "Required to use symfony event dispatcher (^4.3)."
     },
+    "conflict": {
+        "symfony/event-dispatcher": "<4.3"
+    },
     "autoload": {
         "psr-4": {
             "Hyperf\\Framework\\": "src/"
diff --git a/src/rpc-client/src/AbstractServiceClient.php b/src/rpc-client/src/AbstractServiceClient.php
index 0d5b412d5..76cc47368 100644
--- a/src/rpc-client/src/AbstractServiceClient.php
+++ b/src/rpc-client/src/AbstractServiceClient.php
@@ -230,14 +230,14 @@ abstract class AbstractServiceClient
         $services = $health->service($this->serviceName)->json();
         $nodes = [];
         foreach ($services as $node) {
-            $passing = true;
+            $passing = false;
             $service = $node['Service'] ?? [];
             $checks = $node['Checks'] ?? [];
 
             foreach ($checks as $check) {
                 $status = $check['Status'] ?? false;
-                if ($status !== 'passing') {
-                    $passing = false;
+                if ($status === 'passing' && $this->protocol === $service['Meta']['Protocol']) {
+                    $passing = true;
                 }
             }
 
diff --git a/src/utils/src/Functions.php b/src/utils/src/Functions.php
index 721225930..5fe07928c 100644
--- a/src/utils/src/Functions.php
+++ b/src/utils/src/Functions.php
@@ -279,16 +279,24 @@ if (! function_exists('call')) {
 }
 
 if (! function_exists('go')) {
+    /**
+     * @return bool|int
+     */
     function go(callable $callable)
     {
-        Coroutine::create($callable);
+        $id = Coroutine::create($callable);
+        return $id > 0 ? $id : false;
     }
 }
 
 if (! function_exists('co')) {
+    /**
+     * @return bool|int
+     */
     function co(callable $callable)
     {
-        Coroutine::create($callable);
+        $id = Coroutine::create($callable);
+        return $id > 0 ? $id : false;
     }
 }
 
diff --git a/src/utils/tests/FunctionTest.php b/src/utils/tests/FunctionTest.php
index 97339a7b5..bd44ecb35 100644
--- a/src/utils/tests/FunctionTest.php
+++ b/src/utils/tests/FunctionTest.php
@@ -29,6 +29,17 @@ class FunctionTest extends TestCase
         $this->assertSame(2, $result);
     }
 
+    public function testReturnOfGo()
+    {
+        $uniqid = uniqid();
+        $id = go(function () use (&$uniqid) {
+            $uniqid = 'Hyperf';
+        });
+
+        $this->assertTrue(is_int($id));
+        $this->assertSame('Hyperf', $uniqid);
+    }
+
     public function testDataGet()
     {
         $data = ['id' => 1];