README

A simple in-memory cache server written in PHP that supports SET, GET, DEL, and ALL commands via TCP connections. This project allows clients to connect to the server and store key-value pairs in memory, with optional TTL (Time-To-Live) for each entry.

Features

• Supports SET, GET, DEL, and ALL commands.
• Cache values can be stored with optional TTL (default 30 minutes).
• Simple key-value storage in memory with automatic cleanup when TTL expires.
• Supports different data types for values (e.g., strings, integers, arrays, etc.).

Requirements

• PHP 8.1 or higher.
• A TCP client capable of sending JSON-based requests.

Installation

1. Clone this repository:

   git clone https://github.com/kernel64/casper-cache.git
   cd casper-cache

2. Install the dependencies: This project does not require any additional dependencies. (for the moment)

3. Start the cache server:

   Run the server script:

   php run.php

   The server will start listening on 127.0.0.1:100824 by default. Adjust the address and port as needed.

Example of use

1. ** Using CacheClient.php:**

   A client that connects to the Casper Cache server and sends requests.

   <?php
    $client = new \Casper\CacheClient();
    
    // Get a value
    $value = $client->get('key1');
    echo $value; // Output: value1
    
    // Get a value with a callback if it doesn't exist
    $newValue = $client->get('key2', function($key) {
    return 'generated_value';
    });
    echo $newValue; // Output: generated_value
    
    // Delete a value
    $response = $client->delete('key1');
    print_r($response); // Response from server
   

2. More exemples in the test file :

   php test.php

The client will connect to the server, send a SET request, and display the server response.

supported Commands

SET

• Command: SET
• Description: Store a value in the cache with a specified TTL (optional).
• Request Format (JSON):

  {
      "command": "SET",
      "key": "your_key",
      "value": "your_value",
      "ttl": 3600
  }

GET

• Command: GET
• Description: Retrieve the value of a key from the cache.
• Request Format (JSON):

  {
      "command": "GET",
      "key": "your_key"
  }

DEL

• Command: DEL
• Description: Delete a key from the cache.
• Request Format (JSON):

  {
      "command": "DEL",
      "key": "your_key"
  }

ALL

• Command: ALL
• Description: Retrieve all keys and their values from the cache.
• Request Format (JSON):

  {
      "command": "ALL"
  }

TODO

• Add logging functionality.
• Support TLS connections.

License

This project is licensed under the MIT License.