Backend Development
PHP Tutorial
Detailed explanation of Laravel ORM's Model::find caching method
Detailed explanation of Laravel ORM's Model::find caching method
这次给大家带来Laravel ORM对Model::find缓存方法详解，Laravel ORM对Model::find缓存的注意事项有哪些，下面就是实战案例，一起来看一下。
前言
前段时间做项目时候，想要在不改变方法签名的情况下，给 Model::find 方法做个缓存。而且想要做到即插即用。下面话不多说了，来一起看看详细的介绍哦。
1.先看一下当我们调用 find 方法时，框架干了什么？
找到 Illuminate\Database\Eloquent\Model 的代码，搜索 find，没有该方法。看来是走了 callStatic 这个魔术方法。该方法里只有一行代码：
return (new static)->$method(...$parameters);
static 指的是调用该静态方法的类（如果使用的是 UserModel::find(1)，则 static 就代表 UserModel 类）。看来是实例化了一个对象，并调用了成员方法。
2.分析如何优雅地在中间插一脚
为了能够在调用 find 时候，先走我们的缓存，所以我们需要覆盖 callStatic 方法，并检测如果是 find 方法，则优先返回缓存中的数据。
另外，为了能够达到即插即用的效果，我们使用继承的方式，而是使用了 Trait。核心逻辑如下：
public static function create($data = null){
if ($data == null){
return null;
}
$instance = new static;
foreach ($data as $key => $value){
$instance[$key] = $value;
}
return $instance;
}
/**
* 如果方法是 find($id, $nocache)
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public static function callStatic($method, $parameters)
{
if ($method == 'find'){
// 从缓存中获取数据
$obj = static::create(json_decode(Redis::get(static::getCacheKey($parameters[0])), true));
if (null == $obj){
$obj = (new static)->$method(...$parameters);
if (null == $obj){
return null;
} else {
$key = static::getCacheKey($parameters[0]);
// 设置缓存及过期时间
Redis::set($key, $obj);
Redis::expire($key, static::$expire_time);
return $obj;
}
} else {
$obj->exists = true;
return $obj;
}
} else if($method == 'findNoCache'){
$method = 'find';
return (new static)->$method(...$parameters);
}
return (new static)->$method(...$parameters);
}
private static function getCacheKey($id){
$name = str_replace('\\', ':', CLASS);
return "{$name}:{$id}";
}大体逻辑上面已经介绍过了：覆盖 callStatic 方法，判断如果是调用 find ，则走缓存（无缓存，查询后需要设置缓存）。另新增 findNoCache 方法。
3.细节补充
当修改（或删除）数据（调用 save 方法）时需要删除已缓存的内容。
private static function clearCache($id){
Redis::del(self::getCacheKey($id));
}
/**
* when save, should clear cache
* @param array $options
*/
public function save(array $options = []){
static::clearCache($this[$this->primaryKey]);
return parent::save($options);
}
// delete 方法我暂时写，内容类似 save 方法如何使用。在需要使用 find 缓存的 Model 类里，加上一行就够了。
class User extends BaseModel
{
use MemoryCacheTrait;
}快去试试吧。
相信看了本文案例你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
推荐阅读：
The above is the detailed content of Detailed explanation of Laravel ORM's Model::find caching method. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to get the return code when email sending fails in Laravel?
Apr 01, 2025 pm 02:45 PM
Method for obtaining the return code when Laravel email sending fails. When using Laravel to develop applications, you often encounter situations where you need to send verification codes. And in reality...
How to implement the custom table function of clicking to add data in dcat admin?
Apr 01, 2025 am 07:09 AM
How to implement the table function of custom click to add data in dcatadmin (laravel-admin) When using dcat...
Laravel Redis connection sharing: Why does the select method affect other connections?
Apr 01, 2025 am 07:45 AM
The impact of sharing of Redis connections in Laravel framework and select methods When using Laravel framework and Redis, developers may encounter a problem: through configuration...
Laravel multi-tenant extension stancl/tenancy: How to customize the host address of a tenant database connection?
Apr 01, 2025 am 09:09 AM
Custom tenant database connection in Laravel multi-tenant extension package stancl/tenancy When building multi-tenant applications using Laravel multi-tenant extension package stancl/tenancy,...
Laravel Eloquent ORM in Bangla partial model search)
Apr 08, 2025 pm 02:06 PM
LaravelEloquent Model Retrieval: Easily obtaining database data EloquentORM provides a concise and easy-to-understand way to operate the database. This article will introduce various Eloquent model search techniques in detail to help you obtain data from the database efficiently. 1. Get all records. Use the all() method to get all records in the database table: useApp\Models\Post;$posts=Post::all(); This will return a collection. You can access data using foreach loop or other collection methods: foreach($postsas$post){echo$post->
How to effectively check the validity of Redis connections in Laravel6 project?
Apr 01, 2025 pm 02:00 PM
How to check the validity of Redis connections in Laravel6 projects is a common problem, especially when projects rely on Redis for business processing. The following is...
Laravel database migration encounters duplicate class definition: How to resolve duplicate generation of migration files and class name conflicts?
Apr 01, 2025 pm 12:21 PM
A problem of duplicate class definition during Laravel database migration occurs. When using the Laravel framework for database migration, developers may encounter "classes have been used...
Laravel Introduction Example
Apr 18, 2025 pm 12:45 PM
Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.
