场景

• 像文档描述的那样，defer service provider 不是没有每个请求都要加载的，所以可以提高应用的响应效率。defer
  service provider只会在需要的时候才会加载。 那么应该怎么操作

参考文档

• laravel service providers 官方文档

解决

• YourServiceProvider需要设置 $defer 属性 && provides 方法
  • protected $defer = true;
  • The provides method should return the service container bindings registered by the provider 翻译一下就是providers 需要返回service container
• 验证是否设置成功
  • php artisan clear-compile 清除掉编译的文件
  • 发送一次请求 打开bootstrap/cache/services.php 文件, 就可以再deferred下标中找到自己注册的service provider 了

  /**
     * Get the services provided by the provider.
     *
     * @return array
     */
   public function provides()
    {
        return [Connection::class];
    }

举例

<?php

namespace App\Providers;

use App\Billing\Stripe;
use Illuminate\Support\ServiceProvider;

class BillServiceProvider extends ServiceProvider
{
    /**
     * Indicates if loading of the provider is deferred.
     *
     * @var bool
     */
    protected $defer = true;

    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->singleton('billing', function($app){
           return new Stripe();
        });
    }

    /**
     * Get the services provided by the provider.
     *
     * @return array
     */
    public function provides()
    {
        return ['billing'];
    }
}