The TransientCacheTrait trait is designed to simplify the process of caching query results in the WP Statistics plugin. It provides methods to generate cache keys, retrieve cached results, and set cached results using WordPress transients.

• Automatic Cache Key Generation: Generates unique cache keys based on query strings.
• Transient-Based Caching: Utilizes WordPress transients for storing and retrieving cached data.
• Easy Integration: Provides simple methods to integrate caching logic into any class that uses this trait.

Generates a unique cache key based on the provided query string.

• Parameters:
  • $query (string): The query string for which to generate a cache key.
• Returns:
  • (string) A unique cache key.

Example Usage:

$cacheKey = $this->getCacheKey('SELECT * FROM wp_posts');

Retrieves a cached result based on the provided query string. If no cache exists, it returns false.

• Parameters:
  • $query (string): The query string for which to retrieve the cached result.
• Returns:
  • (mixed) The cached result, or false if no cache is found.

Example Usage:

$result = $this->getCachedResult('SELECT * FROM wp_posts');
if ($result !== false) {
    // Use cached result
}

Caches the provided result based on the query string. The cache is set using a transient that expires after 24 hours.

• Parameters:
  • $query (string): The query string for which to cache the result.
  • $result (mixed): The result to cache.
• Returns:
  • (bool) true if the cache was set successfully, false otherwise.

Example Usage:

$this->setCachedResult('SELECT * FROM wp_posts', $result);

To use the TransientCacheTrait trait in your class, follow these steps:

Ensure the trait is available in your project and include it in your class:

<?php

namespace YourNamespace;

use WP_Statistics\Traits\TransientCacheTrait;

class YourClass
{
    use TransientCacheTrait;

    public function getData()
    {
        $query = 'SELECT * FROM wp_posts';
        
        // Attempt to get cached result
        $result = $this->getCachedResult($query);

        if ($result === false) {
            // Perform the expensive operation (e.g., database query)
            $result = $this->fetchDataFromDatabase($query);

            // Cache the result
            $this->setCachedResult($query, $result);
        }

        return $result;
    }

    private function fetchDataFromDatabase($query)
    {
        // Simulate a database query
        return [
            ['id' => 1, 'title' => 'Post 1'],
            ['id' => 2, 'title' => 'Post 2'],
        ];
    }
}

Utilize the provided methods to handle caching automatically. This reduces the need for repetitive code and ensures consistent caching behavior across your application.

• Use Descriptive Queries: Ensure the queries used to generate cache keys are consistent and descriptive to avoid cache collisions.
• Handle Cache Expiry: Be mindful of the cache expiry time. The default is set to 24 hours, but you can adjust this based on your needs.
• Invalidate Cache When Necessary: Manually clear or update the cache when underlying data changes to maintain data integrity.

The TransientCacheTrait trait is a powerful tool for managing caching in your PHP applications, especially within the WordPress environment. By using this trait, you can optimize your application's performance by reducing redundant operations and leveraging cached data effectively.