DEV Community: Azmol Hossain

How to Use Cache in FilamentPHP (Beginner Guide + Best Practices)

Azmol Hossain — Tue, 14 Apr 2026 14:07:37 +0000

🧠 1. Cache কী এবং কেন ব্যবহার করবো?

Cache হলো এমন একটা system যেখানে database থেকে বারবার data না এনে memory থেকে দ্রুত data আনা হয়।

👉 এতে performance অনেক বেড়ে যায়

⚡ 2. Cache::rememberForever (Basic Usage)

use Illuminate\Support\Facades\Cache;
use App\Models\Product;

$products = Cache::rememberForever('active_products', function () {
    return Product::with('category')->where('active', 1)->get();
});

🧠 এটা কী করে?

প্রথমবার DB থেকে data নেয়
পরে cache থেকে data দেয়
manual clear না করলে forever থাকে

⚠️ Problem

Product update হলে cache update হয় না ❌

🚀 3. Trait তৈরি করা (Reusable Cache Clear)

📍 app/Traits/ClearsCache.php

namespace App\Traits;

use Illuminate\Support\Facades\Cache;

trait ClearsCache
{
    protected function clearCache(string $key): void
    {
        Cache::forget($key);
    }
}

🧩 4. Observer (Automatic Cache Clear)

📍 Create observer:

php artisan make:observer ProductObserver --model=Product

✍️ Observer code:

namespace App\Observers;

use App\Models\Product;
use App\Traits\ClearsCache;
use App\Events\ProductUpdated;

class ProductObserver
{
    use ClearsCache;

    protected function clearAll(): void
    {
        $this->clearCache('active_products');
    }

    public function created(Product $product)
    {
        $this->clearAll();
        event(new ProductUpdated());
    }

    public function updated(Product $product)
    {
        $this->clearAll();
        event(new ProductUpdated());
    }

    public function deleted(Product $product)
    {
        $this->clearAll();
        event(new ProductUpdated());
    }
}

🔗 Register Observer

📍 AppServiceProvider.php

use App\Models\Product;
use App\Observers\ProductObserver;

public function boot(): void
{
    Product::observe(ProductObserver::class);
}

🚀 5. Filament Cache Usage

use Illuminate\Support\Facades\Cache;
use App\Models\Product;

public static function getEloquentQuery()
{
    return Cache::rememberForever('active_products', function () {
        return Product::with('category')->where('active', 1);
    });
}

⚡ 6. Livewire Event Listener (UI Auto Refresh)

📍 ListProducts.php

protected $listeners = ['productUpdated' => '$refresh'];

🧩 Bridge Event

use Illuminate\Support\Facades\Event;
use App\Events\ProductUpdated;

public function mount(): void
{
    parent::mount();

    Event::listen(ProductUpdated::class, function () {
        $this->dispatch('productUpdated');
    });
}

🔄 FINAL FLOW

Admin updates product
        ↓
Observer runs
        ↓
Cache cleared
        ↓
Event fired
        ↓
Livewire catches event
        ↓
UI refresh ($refresh)
        ↓
User sees updated data

🎯 Best Practices

✅ Cache naming

Good:

active_products
active_products_with_category

Bad:

data1
temp

✅ Always clear cache on mutation

create
update
delete

✅ Use Observer (not controller)

✔ clean
✔ scalable

🏁 Final Summary

Cache = speed ⚡

Observer = freshness 🔄

Trait = reuse ♻️

Event = communication 📡

Livewire = UI update 🎯

"Cache speeds up reading, Observer keeps it fresh, Livewire updates UI"

How to Create a Django App for Beginners

Azmol Hossain — Wed, 10 Sep 2025 06:04:03 +0000

If you're just getting started with Django, this guide will walk you
step-by-step through creating your first project and app. By the end,
you'll understand how to set up Django, create models, and run your
project in your browser. Let's dive in!

🛠 Step 1: Project Setup

Before creating a Django project, we need to set up our environment. A
great tool for managing Python dependencies is Pipenv.

Open your terminal and run:

pip install pipenv   # install pipenv (one-time setup)
pipenv shell         # activate virtual environment
pipenv install django  # install Django

This ensures that your project has its own isolated environment, keeping
things clean and organized.

📂 Step 2: Create a Django Project

Once Django is installed, create a new project:

django-admin startproject project_name .

Here, replace project_name with the name of your choice (e.g.,
myproject). The . at the end makes sure the project is created in
the current directory.

📦 Step 3: Create a Django App

In Django, apps are modular components that handle specific
functionality (like blog, accounts, contact, etc.).

Run the following command to create an app:

python manage.py startapp app_name

Replace app_name with your preferred name (e.g., contacts).

⚙️ Step 4: Configure Your Project

After creating the app, we need to tell Django about it. Open
settings.py inside your project folder and add your app to the
INSTALLED_APPS list:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app_name',  # add your app here
]

👤 Step 5: Database Setup & Superuser

Before we can use Django's built-in admin panel, let's set up the
database.

Run:

python manage.py migrate

This applies the default database migrations.

Now, create a superuser to log in to the admin panel:

python manage.py createsuperuser

You'll be asked to enter: - Username - Email - Password

▶️ Step 6: Run Your Development Server

Start the server:

python manage.py runserver

Visit your site in the browser:

Project home: http://127.0.0.1:8000/\
Admin panel: http://127.0.0.1:8000/admin

📝 Step 7: Create Your First Model

Models define the structure of your database tables. Let's create a
simple Contact model.

Open your app's models.py and add:

from django.db import models

class Contact(models.Model):
    name = models.CharField(max_length=100)
    email = models.EmailField()
    phone = models.CharField(max_length=15)
    address = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.name

🔄 Step 8: Apply Model Migrations

Whenever you add or modify models, you need to run migrations:

python manage.py makemigrations
python manage.py migrate

This creates the necessary database tables.

🎉 You're All Set!

Now you have a working Django project with: - A project setup\

An app added\
A database configured\
A model created

You can expand this project by creating views, templates, and URLs to
display your data.

✅ Next Steps for You - Learn about Django views and
templates\

Build CRUD (Create, Read, Update, Delete) functionality\
Explore Django REST Framework for APIs

👉 This tutorial should help any beginner start their Django journey
smoothly.

PHP Magic Methods: বিস্তারিত ব্যাখ্যা

Azmol Hossain — Thu, 22 May 2025 06:02:14 +0000

PHP-এর Magic Methods হল কিছু বিশেষ মেথড যেগুলো __ (double underscore) দিয়ে শুরু হয় এবং PHP নিজে থেকে নির্দিষ্ট কন্ডিশনে এগুলো কল করে। নিচে সবগুলো গুরুত্বপূর্ণ Magic Method-এর বিস্তারিত ব্যাখ্যা দেওয়া হলো:

1. `__construct()`

ব্যাখ্যা: ক্লাস থেকে অবজেক্ট তৈরি হওয়ার সাথে সাথে এই মেথডটি অটোমেটিক কল হয়। এটা constructor হিসেবে কাজ করে।

class MyClass {
    function __construct() {
        echo "Object created";
    }
}
$obj = new MyClass();

2. `__destruct()`

ব্যাখ্যা: অবজেক্ট ধ্বংস হওয়ার সময় (script শেষ হলে বা unset() করলে) চালু হয়।

class MyClass {
    function __destruct() {
        echo "Object destroyed";
    }
}

3. `__call($name, $arguments)`

ব্যাখ্যা: যখন inaccessible বা non-existing মেথড কল করা হয় তখন এটি চালু হয়।

class MyClass {
    function __call($name, $arguments) {
        echo "Method $name does not exist";
    }
}
$obj = new MyClass();
$obj->missingMethod();

4. `__callStatic($name, $arguments)`

ব্যাখ্যা: একই কাজ স্ট্যাটিক মেথডের জন্য করে।

class MyClass {
    public static function __callStatic($name, $arguments) {
        echo "Static method $name not found";
    }
}
MyClass::missingStatic();

5. `__get($property)`

ব্যাখ্যা: inaccessible বা non-existing property রিড করার সময় কল হয়।

class MyClass {
    function __get($name) {
        return "Property $name not found";
    }
}
$obj = new MyClass();
echo $obj->name;

6. `__set($property, $value)`

ব্যাখ্যা: inaccessible বা non-existing property-তে ভ্যালু অ্যাসাইন করলে কল হয়।

class MyClass {
    function __set($name, $value) {
        echo "Setting $name to $value";
    }
}
$obj = new MyClass();
$obj->name = "PHP";

7. `__isset($property)`

ব্যাখ্যা: isset() বা empty() ব্যবহার করলে এটি কল হয়।

class MyClass {
    function __isset($name) {
        return false;
    }
}
$obj = new MyClass();
isset($obj->name); // false

8. `__unset($property)`

ব্যাখ্যা: unset() করলে এটি কল হয়।

class MyClass {
    function __unset($name) {
        echo "Unsetting $name";
    }
}
$obj = new MyClass();
unset($obj->name);

9. `__sleep()`

ব্যাখ্যা: অবজেক্ট serialize() করার আগে চালু হয়, কোন properties serialize হবে তা নির্ধারণ করে।

class MyClass {
    public $name = "PHP";
    function __sleep() {
        return ["name"];
    }
}

10. `__wakeup()`

ব্যাখ্যা: unserialize() করার পরে চালু হয়।

class MyClass {
    function __wakeup() {
        echo "Object unserialized";
    }
}

11. `__serialize()`

ব্যাখ্যা: PHP 7.4+ এ অবজেক্ট কাস্টমভাবে serialize করার জন্য।

class MyClass {
    public function __serialize(): array {
        return [];
    }
}

12. `__unserialize()`

ব্যাখ্যা: PHP 7.4+ এ কাস্টমভাবে unserialize করার জন্য।

class MyClass {
    public function __unserialize(array $data): void {
        // Restore data
    }
}

13. `__toString()`

ব্যাখ্যা: অবজেক্টকে string হিসেবে ব্যবহার করলে কল হয়।

class MyClass {
    function __toString() {
        return "Object as string";
    }
}
$obj = new MyClass();
echo $obj;

14. `__invoke()`

ব্যাখ্যা: অবজেক্টকে ফাংশনের মতো কল করলে এটি চালু হয়।

class MyClass {
    function __invoke() {
        echo "Object invoked as function";
    }
}
$obj = new MyClass();
$obj();

15. `__set_state($array)`

ব্যাখ্যা: var_export() ব্যবহার করলে অবজেক্ট recreate করতে ব্যবহৃত হয়।

class MyClass {
    public static function __set_state($array) {
        $obj = new self();
        return $obj;
    }
}

16. `__clone()`

ব্যাখ্যা: অবজেক্ট ক্লোন করার সময় চালু হয়।

class MyClass {
    function __clone() {
        echo "Object cloned";
    }
}
$obj = new MyClass();
$copy = clone $obj;

17. `__debugInfo()`

ব্যাখ্যা: var_dump() ব্যবহারে কী দেখাবে তা নির্ধারণ করে।

class MyClass {
    private $data = "secret";
    function __debugInfo() {
        return ["info" => "custom debug info"];
    }
}
$obj = new MyClass();
var_dump($obj);

এই ছিল PHP-এর সকল Magic Method-এর বিস্তারিত ব্যাখ্যা। এগুলো প্রফেশনাল ও ক্লিন কোড লেখার জন্য খুবই গুরুত্বপূর্ণ।

PHP Object-Oriented Programming (OOP) – বিস্তারিত গাইড

Azmol Hossain — Wed, 21 May 2025 06:58:32 +0000

PHP Object-Oriented Programming (OOP)

Object-Oriented Programming (OOP) হলো একটি প্রোগ্রামিং প্যারাডাইম যেখানে বাস্তব জীবনের জিনিসগুলোকে অবজেক্ট হিসেবে বিবেচনা করা হয় এবং সেগুলোর মধ্যে প্রপার্টি ও মেথড থাকে। PHP-তে OOP ব্যবহারের মাধ্যমে প্রজেক্টকে আরো সংগঠিত ও রিইউজেবল করা যায়।

✅ PHP What is OOP (অবজেক্ট ওরিয়েন্টেড প্রোগ্রামিং কী)

OOP-এর চারটি মূলনীতি:

Encapsulation – ডেটা এবং মেথড একত্রে রাখা
Abstraction – প্রয়োজনীয় বিষয় দেখানো, জটিলতা লুকানো
Inheritance – একটি ক্লাসের বৈশিষ্ট্য অন্য ক্লাসে পাওয়া
Polymorphism – এক নাম, একাধিক ব্যবহার

🔷 PHP Classes/Objects

ক্লাস:

class Car {
  public $color;
  public function drive() {
    echo "Car is driving";
  }
}

অবজেক্ট:

$myCar = new Car();
$myCar->drive();

🏗️ PHP Constructor (__construct)

class Person {
  public function __construct() {
    echo "Object created!";
  }
}

🧹 PHP Destructor (__destruct)

class Person {
  public function __destruct() {
    echo "Object destroyed!";
  }
}

🔐 PHP Access Modifiers

public: সব জায়গা থেকে অ্যাক্সেসযোগ্য
protected: শুধুমাত্র ক্লাস ও সাবক্লাসে অ্যাক্সেসযোগ্য
private: শুধুমাত্র সেই ক্লাসেই অ্যাক্সেসযোগ্য

class Test {
  public $name;
  private $secret;
  protected $data;
}

🧬 PHP Inheritance

class Animal {
  public function sound() {
    echo "Animal sound";
  }
}

class Dog extends Animal {
  public function bark() {
    echo "Dog barks";
  }
}

🧱 PHP Constants

class MyClass {
  const VERSION = "1.0";
}
echo MyClass::VERSION;

📄 PHP Abstract Classes

abstract class Shape {
  abstract public function area();
}

🔌 PHP Interfaces

interface Logger {
  public function log($data);
}

class FileLogger implements Logger {
  public function log($data) {
    echo "Logging to file";
  }
}

🧩 PHP Traits

trait Logger {
  public function log($msg) {
    echo $msg;
  }
}

class App {
  use Logger;
}

🧷 PHP Static Methods

class Math {
  public static function add($a, $b) {
    return $a + $b;
  }
}
echo Math::add(2, 3);

🧲 PHP Static Properties

class Counter {
  public static $count = 0;
}
echo Counter::$count;

📦 PHP Namespaces

namespace App\Models;

class User {
  public function getName() {
    return "Limon";
  }
}

🔁 PHP Iterables

function printItems(iterable $items) {
  foreach ($items as $item) {
    echo $item;
  }
}

🔚 উপসংহার

PHP OOP ব্যবহার করলে কোড হয়:

✅ Reusable (পুনরায় ব্যবহারযোগ্য)
✅ Modular (মডুলার)
✅ Organized (সুশৃঙ্খল)
✅ Maintainable (রক্ষণাবেক্ষণে সহজ)

শিখতে থাকো, প্র্যাকটিস করো — PHP OOP তোমার প্রজেক্টকে নতুন উচ্চতায় নিয়ে যাবে!

How to Use Repository and Service Pattern in Laravel

Azmol Hossain — Sat, 01 Mar 2025 03:28:32 +0000

The Repository and Service Pattern is a powerful way to structure your Laravel applications. It promotes clean, maintainable, and testable code by separating concerns and decoupling your application logic. In this guide, we’ll walk through how to implement this pattern in Laravel with a simple CRUD example for managing products.

Step 1: Create Repository Interface

The first step is to define an interface for the repository. This ensures that the repository adheres to a contract, making it easier to swap implementations later.

Create the file app/Repositories/Interfaces/ProductRepositoryInterface.php:

namespace App\Repositories\Interfaces;

interface ProductRepositoryInterface
{
    public function getAll();
    public function findById($id);
    public function create(array $data);
    public function update($id, array $data);
    public function delete($id);
}

Step 2: Create Repository Implementation

Next, implement the repository interface. This class will handle all database interactions for the Product model.

Create the file app/Repositories/ProductRepository.php:

namespace App\Repositories;

use App\Models\Product;
use App\Repositories\Interfaces\ProductRepositoryInterface;

class ProductRepository implements ProductRepositoryInterface
{
    public function getAll()
    {
        return Product::all();
    }

    public function findById($id)
    {
        return Product::findOrFail($id);
    }

    public function create(array $data)
    {
        return Product::create($data);
    }

    public function update($id, array $data)
    {
        $product = Product::findOrFail($id);
        $product->update($data);
        return $product;
    }

    public function delete($id)
    {
        return Product::destroy($id);
    }
}

Step 3: Create Service Interface

The service layer acts as an intermediary between the controller and the repository. It contains the business logic of your application.

Create the file app/Services/Interfaces/ProductServiceInterface.php:

namespace App\Services\Interfaces;

interface ProductServiceInterface
{
    public function getAllProducts();
    public function getProductById($id);
    public function createProduct(array $data);
    public function updateProduct($id, array $data);
    public function deleteProduct($id);
}

Step 4: Create Service Implementation

Now, implement the service interface. This class will use the repository to perform operations.

Create the file app/Services/ProductService.php:

namespace App\Services;

use App\Repositories\Interfaces\ProductRepositoryInterface;
use App\Services\Interfaces\ProductServiceInterface;

class ProductService implements ProductServiceInterface
{
    protected $productRepository;

    public function __construct(ProductRepositoryInterface $productRepository)
    {
        $this->productRepository = $productRepository;
    }

    public function getAllProducts()
    {
        return $this->productRepository->getAll();
    }

    public function getProductById($id)
    {
        return $this->productRepository->findById($id);
    }

    public function createProduct(array $data)
    {
        return $this->productRepository->create($data);
    }

    public function updateProduct($id, array $data)
    {
        return $this->productRepository->update($id, $data);
    }

    public function deleteProduct($id)
    {
        return $this->productRepository->delete($id);
    }
}

Step 5: Bind Interfaces to Implementations

To make the repository and service injectable, bind the interfaces to their implementations in the AppServiceProvider.

Modify app/Providers/AppServiceProvider.php:

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Repositories\Interfaces\ProductRepositoryInterface;
use App\Repositories\ProductRepository;
use App\Services\Interfaces\ProductServiceInterface;
use App\Services\ProductService;

class AppServiceProvider extends ServiceProvider
{
    public function register()
    {
        $this->app->bind(ProductRepositoryInterface::class, ProductRepository::class);
        $this->app->bind(ProductServiceInterface::class, ProductService::class);
    }

    public function boot()
    {
        //
    }
}

Step 6: Update the Controller

Now, update the ProductController to use the service layer. This keeps the controller lightweight and focused on handling HTTP requests.

Modify app/Http/Controllers/ProductController.php:

namespace App\Http\Controllers;

use App\Services\Interfaces\ProductServiceInterface;
use Illuminate\Http\Request;

class ProductController extends Controller
{
    protected $productService;

    public function __construct(ProductServiceInterface $productService)
    {
        $this->productService = $productService;
    }

    public function index()
    {
        return response()->json($this->productService->getAllProducts());
    }

    public function show($id)
    {
        return response()->json($this->productService->getProductById($id));
    }

    public function store(Request $request)
    {
        $data = $request->validate([
            'name' => 'required|string|max:255',
            'price' => 'required|numeric',
            'stock' => 'required|integer',
        ]);
        return response()->json($this->productService->createProduct($data));
    }

    public function update(Request $request, $id)
    {
        $data = $request->validate([
            'name' => 'string|max:255',
            'price' => 'numeric',
            'stock' => 'integer',
        ]);
        return response()->json($this->productService->updateProduct($id, $data));
    }

    public function destroy($id)
    {
        return response()->json($this->productService->deleteProduct($id));
    }
}

Step 7: Define API Routes

Finally, define the API routes for the ProductController.

Modify routes/api.php:

use App\Http\Controllers\ProductController;

Route::prefix('products')->group(function () {
    Route::get('/', [ProductController::class, 'index']);
    Route::get('/{id}', [ProductController::class, 'show']);
    Route::post('/', [ProductController::class, 'store']);
    Route::put('/{id}', [ProductController::class, 'update']);
    Route::delete('/{id}', [ProductController::class, 'destroy']);
});

Benefits of Using Repository and Service Pattern

Decoupling: The service layer is independent of the repository implementation.
Easy to Swap Implementations: You can switch to another repository (e.g., API-based repository) without changing the service or controller.
Better Testing: You can mock the repository or service in unit tests.
Cleaner Code: The controller is lightweight and follows SOLID principles.

Conclusion

By implementing the Repository and Service Pattern in Laravel, you can create a clean, maintainable, and scalable application. This pattern separates concerns, making your code easier to test and extend. In this guide, we walked through a simple CRUD example for managing products, but you can apply this pattern to any part of your application.

Next Steps

Explore advanced features like caching and pagination in the repository.
Implement validation and error handling in the service layer.
Use Dependency Injection to further decouple your application.

How to Use Cache in Laravel: A Comprehensive Guide to Boosting Performance and Scalability

Azmol Hossain — Fri, 28 Feb 2025 15:42:21 +0000

Caching is one of the most effective ways to improve the performance and scalability of your Laravel application. By storing frequently accessed data in a fast-access storage layer, you can reduce database queries, speed up response times, and handle more traffic with fewer resources. In this guide, we’ll explore how to use caching in Laravel with a practical example using the ProductController.

1. What is Caching in Laravel?

Caching is the process of storing data temporarily in a high-speed storage layer (like memory) so that future requests for the same data can be served faster. Laravel provides a unified API for various caching backends, including:

File-based caching
Database caching
Redis
Memcached

In this guide, we’ll use Laravel’s caching system to store and retrieve a list of active products.

2. Setting Up the ProductController

Let’s start by creating a ProductController that demonstrates how to use caching in Laravel. The controller will have three methods:

index: Displays a list of active products, using caching to optimize performance.
create: Shows a form to create a new product.
store: Handles the creation of a new product and invalidates the cache.

Here’s the complete code for the ProductController:

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Cache;
use App\Models\Product;

class ProductController extends Controller
{

    public function index()
    {

        $products = Cache::rememberForever('active_products', function () {
            return Product::where('active', 1)->get();
        });

        return view('products.index', compact('products'));
    }

    public function create()
    {
        return view('products.create');
    }

    public function store(Request $request)
    {

        $request->validate([
            'name' => 'required|string|max:255',
            'price' => 'required|numeric',
            'active' => 'boolean',
        ]);

        $product = Product::create([
            'name' => $request->input('name'),
            'price' => $request->input('price'),
            'active' => $request->input('active', 1), // Default to active if not provided
        ]);

        Cache::forget('active_products');

        return redirect()->route('products.index')->with('success', 'Product created successfully!');
    }
}

3. Breaking Down the Code

a. Caching Data with Cache::rememberForever

In the index method, we use the Cache::rememberForever method to cache the list of active products:

$products = Cache::rememberForever('active_products', function () {
    return Product::where('active', 1)->get();
});

active_products: The cache key used to store the data.
Closure: The function that fetches the data from the database if the cache key doesn’t exist.
rememberForever: Stores the data in the cache indefinitely (or until manually removed).

This ensures that the database query is executed only once, and subsequent requests are served from the cache.

b. Invalidating the Cache

When a new product is created, the cache must be invalidated to ensure the updated list of products is displayed. In the store method, we use Cache::forget to remove the cached data:

Cache::forget('active_products');

This ensures that the next request to the index method will regenerate the cache with the updated data.

c. Displaying and Creating Products

The index method passes the cached products to the products.index view.
The create method displays a form to create a new product.
The store method validates the input, creates the product, and invalidates the cache.

4. Best Practices for Using Cache in Laravel

a. Choose the Right Cache Driver

Laravel supports multiple cache drivers. For high-performance applications, use Redis or Memcached. For smaller applications, file-based or database caching may suffice.

b. Use Cache Tags for Granular Control

If you’re using a cache driver that supports tags (e.g., Redis), you can group related cache items and clear them together:

Cache::tags(['products', 'active'])->rememberForever('active_products', function () {
    return Product::where('active', 1)->get();
});

Cache::tags(['products'])->flush();

c. Set Appropriate Cache Expiration

While rememberForever is useful for static data, most cached data should have an expiration time. Use Cache::remember with a time limit:

Cache::remember('active_products', 60, function () { // Cache for 60 minutes
    return Product::where('active', 1)->get();
});

d. Monitor Cache Performance

Use tools like Laravel Telescope or Redis CLI to monitor cache usage and performance.

5. Benefits of Using Cache in Laravel

Improved Performance: Reduces database queries and speeds up response times.
Scalability: Handles more traffic with fewer resources.
Cost Efficiency: Reduces server load and infrastructure costs.
Better User Experience: Faster load times lead to happier users.

6. Conclusion

Caching is a powerful tool for optimizing Laravel applications. By implementing caching in your ProductController, you can significantly improve performance and scalability. Whether you’re caching database queries, API responses, or computed data, Laravel’s caching system makes it easy to get started.

In this guide, we covered:

How to cache data using Cache::rememberForever.
How to invalidate the cache when data changes.
Best practices for using cache in Laravel.

By following these steps, you can build faster, more efficient Laravel applications that scale effortlessly.

Next Steps

Explore Laravel’s documentation on caching: Laravel Caching
Experiment with different cache drivers (Redis, Memcached, etc.).
Implement caching in other parts of your application.

DEV Community: Azmol Hossain

How to Use Cache in FilamentPHP (Beginner Guide + Best Practices)

🧠 1. Cache কী এবং কেন ব্যবহার করবো?

⚡ 2. Cache::rememberForever (Basic Usage)

🧠 এটা কী করে?

⚠️ Problem

🚀 3. Trait তৈরি করা (Reusable Cache Clear)

🧩 4. Observer (Automatic Cache Clear)

✍️ Observer code:

🔗 Register Observer

🚀 5. Filament Cache Usage

⚡ 6. Livewire Event Listener (UI Auto Refresh)

🧩 Bridge Event

🔄 FINAL FLOW

🎯 Best Practices

✅ Cache naming

✅ Always clear cache on mutation

✅ Use Observer (not controller)

🏁 Final Summary

How to Create a Django App for Beginners

🛠 Step 1: Project Setup

📂 Step 2: Create a Django Project

📦 Step 3: Create a Django App

⚙️ Step 4: Configure Your Project

👤 Step 5: Database Setup & Superuser

▶️ Step 6: Run Your Development Server

📝 Step 7: Create Your First Model

🔄 Step 8: Apply Model Migrations

🎉 You're All Set!

PHP Magic Methods: বিস্তারিত ব্যাখ্যা

1. __construct()

2. __destruct()

3. __call($name, $arguments)

4. __callStatic($name, $arguments)

5. __get($property)

6. __set($property, $value)

7. __isset($property)

8. __unset($property)

9. __sleep()

10. __wakeup()

11. __serialize()

12. __unserialize()

13. __toString()

14. __invoke()

15. __set_state($array)

16. __clone()

17. __debugInfo()

PHP Object-Oriented Programming (OOP) – বিস্তারিত গাইড

PHP Object-Oriented Programming (OOP)

✅ PHP What is OOP (অবজেক্ট ওরিয়েন্টেড প্রোগ্রামিং কী)

🔷 PHP Classes/Objects

ক্লাস:

অবজেক্ট:

🏗️ PHP Constructor (__construct)

🧹 PHP Destructor (__destruct)

🔐 PHP Access Modifiers

🧬 PHP Inheritance

🧱 PHP Constants

📄 PHP Abstract Classes

🔌 PHP Interfaces

🧩 PHP Traits

🧷 PHP Static Methods

🧲 PHP Static Properties

📦 PHP Namespaces

🔁 PHP Iterables

🔚 উপসংহার

How to Use Repository and Service Pattern in Laravel

Step 1: Create Repository Interface

Step 2: Create Repository Implementation

Step 3: Create Service Interface

Step 4: Create Service Implementation

Step 5: Bind Interfaces to Implementations

Step 6: Update the Controller

Step 7: Define API Routes

Benefits of Using Repository and Service Pattern

Conclusion

Next Steps

How to Use Cache in Laravel: A Comprehensive Guide to Boosting Performance and Scalability

1. What is Caching in Laravel?

2. Setting Up the ProductController

1. `__construct()`

2. `__destruct()`

3. `__call($name, $arguments)`

4. `__callStatic($name, $arguments)`

5. `__get($property)`

6. `__set($property, $value)`

7. `__isset($property)`

8. `__unset($property)`

9. `__sleep()`

10. `__wakeup()`

11. `__serialize()`

12. `__unserialize()`

13. `__toString()`

14. `__invoke()`

15. `__set_state($array)`

16. `__clone()`

17. `__debugInfo()`