laravel mysql优化学习

.idea/blog.iml

@@ -8,6 +8,7 @@
       <sourceFolder url="file://$MODULE_DIR$/database/factories" isTestSource="false" packagePrefix="Database\Factories\" />
       <sourceFolder url="file://$MODULE_DIR$/spec" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/asm89/stack-cors" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/barryvdh/laravel-debugbar" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/brick/math" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/chuckpac/weather" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/composer" />
@@ -34,6 +35,7 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/league/commonmark" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/league/flysystem" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/league/mime-type-detection" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/maximebf/debugbar" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/mockery/mockery" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/monolog/monolog" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/myclabs/deep-copy" />
@@ -83,6 +85,7 @@
       <excludeFolder url="file://$MODULE_DIR$/vendor/swiftmailer/swiftmailer" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/console" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/css-selector" />
+      <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/debug" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/deprecation-contracts" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/error-handler" />
       <excludeFolder url="file://$MODULE_DIR$/vendor/symfony/event-dispatcher" />

.idea/php.xml

@@ -108,6 +108,9 @@
       <path value="$PROJECT_DIR$/vendor/voku/portable-ascii" />
       <path value="$PROJECT_DIR$/vendor/facade/flare-client-php" />
       <path value="$PROJECT_DIR$/vendor/chuckpac/weather" />
+      <path value="$PROJECT_DIR$/vendor/maximebf/debugbar" />
+      <path value="$PROJECT_DIR$/vendor/symfony/debug" />
+      <path value="$PROJECT_DIR$/vendor/barryvdh/laravel-debugbar" />
     </include_path>
   </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="7.3" />

app/Http/Controllers/PostController.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use App\Models\Post;
+
+class PostController extends Controller
+{
+
+    public function index()
+    {   //普通查询 n+1
+        //$posts = Post::orderByDesc('created_at')->paginate(100);
+
+        //避免n+1
+        //$posts = Post::with('author')->orderByDesc('created_at')->paginate(100);
+
+        //指定字段 -- 报错了
+        $posts = Post::with('author:name')
+            ->select(['id', 'title', 'user_id', 'created_at'])
+            ->orderByDesc('created_at')
+            ->paginate(100);
+        return view('post.index', ['posts' => $posts]);
+    }
+}

app/Http/Controllers/Test/TestController.php

@@ -15,11 +15,17 @@ class TestController extends Controller
     }
 
     public function index(){
-        $this->testWeater();
+        //$this->testWeater();
+        return $this->testDebugar();
     }
 
     private function testWeater(){
         $response = $this->weather->getWeather('深圳');
         dd($response);
     }
+
+    private function testDebugar(){
+        $user = \App\Models\User::where('name', '柳红')->first();
+        return view('welcome', ['user' => $user]);
+    }
 }

app/Models/Post.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Post extends Model
+{
+    use HasFactory;
+
+    public function author()
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+}

app/Providers/RouteServiceProvider.php

@@ -26,7 +26,7 @@ class RouteServiceProvider extends ServiceProvider
      *
      * @var string|null
      */
-    // protected $namespace = 'App\\Http\\Controllers';
+     protected $namespace = 'App\\Http\\Controllers';
 
     /**
      * Define your route model bindings, pattern filters, etc.

composer.json

@@ -17,6 +17,7 @@
         "laravel/tinker": "^2.5"
     },
     "require-dev": {
+        "barryvdh/laravel-debugbar": "^3.5",
         "facade/ignition": "^2.5",
         "fakerphp/faker": "^1.9.1",
         "mockery/mockery": "^1.4.2",

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "da91c3a03ae6a6871123a2c81dfa5894",
+    "content-hash": "8dfb3f6214f5caf32549b2d226f1cea5",
     "packages": [
         {
             "name": "asm89/stack-cors",
@@ -5269,6 +5269,92 @@
         }
     ],
     "packages-dev": [
+        {
+            "name": "barryvdh/laravel-debugbar",
+            "version": "v3.5.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/barryvdh/laravel-debugbar.git",
+                "reference": "233c10688f4c1a6e66ed2ef123038b1363d1bedc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/barryvdh/laravel-debugbar/zipball/233c10688f4c1a6e66ed2ef123038b1363d1bedc",
+                "reference": "233c10688f4c1a6e66ed2ef123038b1363d1bedc",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "illuminate/routing": "^6|^7|^8",
+                "illuminate/session": "^6|^7|^8",
+                "illuminate/support": "^6|^7|^8",
+                "maximebf/debugbar": "^1.16.3",
+                "php": ">=7.2",
+                "symfony/debug": "^4.3|^5",
+                "symfony/finder": "^4.3|^5"
+            },
+            "require-dev": {
+                "orchestra/testbench-dusk": "^4|^5|^6",
+                "phpunit/phpunit": "^8.5|^9.0",
+                "squizlabs/php_codesniffer": "^3.5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.5-dev"
+                },
+                "laravel": {
+                    "providers": [
+                        "Barryvdh\\Debugbar\\ServiceProvider"
+                    ],
+                    "aliases": {
+                        "Debugbar": "Barryvdh\\Debugbar\\Facade"
+                    }
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Barryvdh\\Debugbar\\": "src/"
+                },
+                "files": [
+                    "src/helpers.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Barry vd. Heuvel",
+                    "email": "barryvdh@gmail.com"
+                }
+            ],
+            "description": "PHP Debugbar integration for Laravel",
+            "keywords": [
+                "debug",
+                "debugbar",
+                "laravel",
+                "profiler",
+                "webprofiler"
+            ],
+            "support": {
+                "issues": "https://github.com/barryvdh/laravel-debugbar/issues",
+                "source": "https://github.com/barryvdh/laravel-debugbar/tree/v3.5.1"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/barryvdh",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-09-07T19:32:39+00:00"
+        },
         {
             "name": "doctrine/instantiator",
             "version": "1.4.0",
@@ -5743,6 +5829,77 @@
             },
             "time": "2020-07-09T08:09:16+00:00"
         },
+        {
+            "name": "maximebf/debugbar",
+            "version": "v1.16.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/maximebf/php-debugbar.git",
+                "reference": "c86c717e4bf3c6d98422da5c38bfa7b0f494b04c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/maximebf/php-debugbar/zipball/c86c717e4bf3c6d98422da5c38bfa7b0f494b04c",
+                "reference": "c86c717e4bf3c6d98422da5c38bfa7b0f494b04c",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": "^7.1|^8",
+                "psr/log": "^1.0",
+                "symfony/var-dumper": "^2.6|^3|^4|^5"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^7.5.20 || ^9.4.2"
+            },
+            "suggest": {
+                "kriswallsmith/assetic": "The best way to manage assets",
+                "monolog/monolog": "Log using Monolog",
+                "predis/predis": "Redis storage"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.16-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "DebugBar\\": "src/DebugBar/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Maxime Bouroumeau-Fuseau",
+                    "email": "maxime.bouroumeau@gmail.com",
+                    "homepage": "http://maximebf.com"
+                },
+                {
+                    "name": "Barry vd. Heuvel",
+                    "email": "barryvdh@gmail.com"
+                }
+            ],
+            "description": "Debug bar in the browser for php application",
+            "homepage": "https://github.com/maximebf/php-debugbar",
+            "keywords": [
+                "debug",
+                "debugbar"
+            ],
+            "support": {
+                "issues": "https://github.com/maximebf/php-debugbar/issues",
+                "source": "https://github.com/maximebf/php-debugbar/tree/v1.16.4"
+            },
+            "time": "2020-12-07T10:48:48+00:00"
+        },
         {
             "name": "mockery/mockery",
             "version": "1.4.2",
@@ -7869,6 +8026,81 @@
             ],
             "time": "2020-09-28T06:39:44+00:00"
         },
+        {
+            "name": "symfony/debug",
+            "version": "v4.4.18",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/debug.git",
+                "reference": "5dfc7825f3bfe9bb74b23d8b8ce0e0894e32b544"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/debug/zipball/5dfc7825f3bfe9bb74b23d8b8ce0e0894e32b544",
+                "reference": "5dfc7825f3bfe9bb74b23d8b8ce0e0894e32b544",
+                "shasum": "",
+                "mirrors": [
+                    {
+                        "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                        "preferred": true
+                    }
+                ]
+            },
+            "require": {
+                "php": ">=7.1.3",
+                "psr/log": "~1.0",
+                "symfony/polyfill-php80": "^1.15"
+            },
+            "conflict": {
+                "symfony/http-kernel": "<3.4"
+            },
+            "require-dev": {
+                "symfony/http-kernel": "^3.4|^4.0|^5.0"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Debug\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Debug Component",
+            "homepage": "https://symfony.com",
+            "support": {
+                "source": "https://github.com/symfony/debug/tree/v4.4.18"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-12-10T16:34:26+00:00"
+        },
         {
             "name": "theseer/tokenizer",
             "version": "1.2.0",

database/factories/PostFactory.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\Post;
+use App\Models\User;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+class PostFactory extends Factory
+{
+    /**
+     * The name of the factory's corresponding model.
+     *
+     * @var string
+     */
+    protected $model = Post::class;
+
+    /**
+     * Define the model's default state.
+     *
+     * @return array
+     */
+    public function definition()
+    {
+        return [
+            'title' => $this->faker->sentence,
+            'content' => $this->faker->paragraph,
+            'user_id' => User::factory()
+        ];
+    }
+}

database/migrations/2020_12_24_104135_alter_users_add_name_index.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AlterUsersAddNameIndex extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->index('name');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropIndex(['name']);
+        });
+    }
+}

database/migrations/2020_12_24_104831_create_posts_table.php

@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreatePostsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('posts', function (Blueprint $table) {
+            $table->id();
+            $table->string('title');
+            $table->text('content');
+            $table->bigInteger('user_id')->unsigned()->index();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('posts');
+    }
+}

database/seeders/DatabaseSeeder.php

@@ -3,6 +3,7 @@
 namespace Database\Seeders;
 
 use Illuminate\Database\Seeder;
+use App\Models\Post;
 
 class DatabaseSeeder extends Seeder
 {
@@ -13,6 +14,7 @@ class DatabaseSeeder extends Seeder
      */
     public function run()
     {
-        // \App\Models\User::factory(10)->create();
+        //\App\Models\User::factory(10000)->create();
+        Post::factory()->count(10000)->create();
     }
 }

resources/views/post/index.blade.php

@@ -0,0 +1,40 @@
+{{--<x-app-layout>--}}
+{{--    <x-slot name="header">--}}
+{{--        <h2 class="font-semibold text-xl text-gray-800 leading-tight">--}}
+{{--            文章列表--}}
+{{--        </h2>--}}
+{{--    </x-slot>--}}
+
+    <div class="py-12">
+        <div class="max-w-7xl mx-auto sm:px-6 lg:px-8">
+            <div class="bg-white overflow-hidden shadow-xl sm:rounded-lg">
+                <div class="flex justify-center">
+                    <table class="w-full m-8">
+                        <thead>
+                        <tr>
+                            <th class="px-4 py-2">ID</th>
+                            <th class="px-4 py-2">Title</th>
+                            <th class="px-4 py-2">Author</th>
+                            <th class="px-4 py-2">Created At</th>
+                        </tr>
+                        </thead>
+                        <tbody>
+                        @foreach ($posts as $post)
+                            <tr>
+                                <td class="border px-4 py-2">{{ $post->id }}</td>
+                                <td class="border px-4 py-2">{{ $post->title }}</td>
+                                <td class="border px-4 py-2">{{ $post->author->name }}</td>
+                                <td class="border px-4 py-2">{{ $post->created_at->diffForHumans() }}</td>
+                            </tr>
+                        @endforeach
+                        </tbody>
+                    </table>
+                </div>
+
+                <div class="max-w-full m-8">
+                    {{ $posts->links() }}
+                </div>
+            </div>
+        </div>
+    </div>
+{{--</x-app-layout>--}}

routes/web.php

@@ -16,4 +16,6 @@ use Illuminate\Support\Facades\Route;
 Route::get('/', function () {
     return view('welcome');
 });
-Route::get('/test','\App\Http\Controllers\Test\TestController@index');
+Route::get('/test','Test\TestController@index');
+
+Route::get('/posts','PostController@index');

storage/debugbar/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore