PHP code example of megaads / laravel-query-cache

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

megaads / laravel-query-cache example snippets

use Rennokki\QueryCache\Traits\QueryCacheable;

class Podcast extends Model
{
    use QueryCacheable;

    ...
}

use Rennokki\QueryCache\Traits\QueryCacheable;

class Article extends Model
{
    use QueryCacheable;

    public $cacheFor = 3600; // cache time, in seconds
    ...
}

// SELECT * FROM articles ORDER BY created_at DESC LIMIT 1;
$latestArticle = Article::latest()->first();

// SELECT * FROM articles WHERE published = 1;
$publishedArticles = Article::wherePublished(true)->get();

$postsCount = Post::cacheFor(60 * 60)->count();

// Using a DateTime instance like Carbon works perfectly fine!
$postsCount = Post::cacheFor(now()->addDays(1))->count();

$shelfOneBooks = Book::whereShelf(1)
    ->cacheFor(60)
    ->cacheTags(['shelf:1'])
    ->get();

$shelfTwoBooks = Book::whereShelf(2)
    ->cacheFor(60)
    ->cacheTags(['shelf:2'])
    ->get();

// After flushing the cache for shelf:1, the query of$shelfTwoBooks will still hit the cache if re-called again.
Book::flushQueryCache(['shelf:1']);

// Flushing also works for both tags, invalidating them both, not just the one tagged with shelf:1
Book::flushQueryCache(['shelf:1', 'shelf:2']);

$alice = Kid::whereName('Alice')
    ->cacheFor(60)
    ->cacheTags(['kids'])
    ->first();

$bob = Kid::whereName('Bob')
    ->cacheFor(60)
    ->cacheTags(['kids'])
    ->first();

class Kid extends Model
{
    use QueryCacheable;

    /**
     * Set the base cache tags that will be present
     * on all queries.
     *
     * @return array
     */
    protected function getCacheBaseTags(): array
    {
        return [
            'custom_tag',
        ];
    }
}

// Automatically works with `custom_tag`
Kid::flushQueryCache();

class Page extends Model
{
    use QueryCacheable;

    /**
     * Invalidate the cache automatically
     * upon update in the database.
     *
     * @var bool
     */
    protected static $flushCacheOnUpdate = true;
}

class Page extends Model
{
    use QueryCacheable;

    /**
     * Invalidate the cache automatically
     * upon update in the database.
     *
     * @var bool
     */
    protected static $flushCacheOnUpdate = true;

    /**
     * When invalidating automatically on update, you can specify
     * which tags to invalidate.
     *
     * @return array
     */
    public function getCacheTagsToInvalidateOnUpdate(): array
    {
        return [
            'query1',
        ];
    }
}

$query1 = Page::cacheFor(60)
    ->cacheTags(['query1'])
    ->get();

$query2 = Page::cacheFor(60)
    ->cacheTags(['query2'])
    ->get();

// The $query1 gets invalidated
// but $query2 will still hit from cache if re-called.

$page = Page::first();

$page->update([
    'name' => 'Reddit',
]);

$user = User::with(['orders' => function ($query) {
    return $query
        ->cacheFor(60 * 60)
        ->cacheTags(['my:orders']);
}])->get();

// This comes from the cache if existed.
$orders = $user->orders;

$bob = Kid::whereName('Bob')
    ->cacheFor(60)
    ->cachePrefix('kids_')
    ->first();

$bob = Kid::whereName('Bob')
    ->cacheFor(60)
    ->cacheDriver('dynamodb')
    ->first();

$uncachedBooks = Book::dontCache()->get();
$uncachedBooks = Book::doNotCache()->get(); // same thing

class Book extends Model
{
    public $cacheFor = 3600; // equivalent of ->cacheFor(3600)

    public $cacheTags = ['books']; // equivalent of ->cacheTags(['books'])

    public $cachePrefix = 'books_' // equivalent of ->cachePrefix('books_');

    public $cacheDriver = 'dynamodb'; // equivalent of ->cacheDriver('dynamodb');
}

use Rennokki\QueryCache\Traits\QueryCacheModule;
use Illuminate\Database\Query\Builder as BaseBuilder; // the base laravel builder
use Rennokki\QueryCache\Contracts\QueryCacheModuleInterface;

// MyCustomBuilder.php
class MyCustomBuilder implements QueryCacheModuleInterface
{
    use QueryCacheModule;

    // the rest of the logic here.
}

// MyBuilderTrait.php
trait MyBuilderTrait
{
    protected function newBaseQueryBuilder()
    {
        return new MyCustomBuilder(
            //
        );
    }
}

// app/CustomModel.php
class CustomModel extends Model
{
    use MyBuilderTrait;
}

CustomModel::cacheFor(30)->customGetMethod();

public function generatePlainCacheKey(string $method = 'get', $id = null, $appends = null): string
{
    $name = $this->connection->getName();

    // Count has no Sql, that's why it can't be used ->toSql()
    if ($method === 'count') {
        return $name.$method.$id.serialize($this->getBindings()).$appends;
    }

    return $name.$method.$id.$this->toSql().serialize($this->getBindings()).$appends;
}

class MyCustomBuilder implements QueryCacheModuleInterface
{
    use QueryCacheModule;

    public function generatePlainCacheKey(string $method = 'get', $id = null, $appends = null): string
    {
        $name = $this->connection->getName();

        // Using ->myCustomSqlString() instead of ->toSql()
        return $name.$method.$id.$this->myCustomSqlString().serialize($this->getBindings()).$appends;
    }
}

class Builder
{
    public function get($columns = ['*'])
    {
        if (! $this->shouldAvoidCache()) {
            return $this->getFromQueryCache('get', $columns);
        }

        return parent::get($columns);
    }
}

class MyCustomBuilder
{
    public function count()
    {
        if (! $this->shouldAvoidCache()) {
            return $this->getFromQueryCache('count');
        }

        return parent::count();
    }
}

class MyCustomBuilder
{
    public function getQueryCacheCallback(string $method = 'get', $columns = ['*'], $id = null)
    {
        return function () use ($method, $columns, $id) {
            $this->avoidCache = true;

            // the function for find() caching
            // accepts different params
            if ($method === 'find') {
                return $this->find($id, $columns);
            }

            return $this->{$method}($columns);
        };
    }

    public function find($id, $columns = ['*'])
    {
        // implementing the same logic
        if (! $this->shouldAvoidCache()) {
            return $this->getFromQueryCache('find', $columns, $id);
        }

        return parent::find($id, $columns);
    }
}