Cached Wordpress query to boost performance

<?php
/**
 * Radium Theme Query Class
 *
 * This is used to create cacheable query to boost performance
 *
 * @since  1.0.0
 *
 * @category Radium Framework
 * @package  NewsFront WP
 * @author   Franklin M Gitonga
 * @link     http://radiumthemes.com/
 */

class Radium_Theme_WP_Query {

	/**
	 * Holds a copy of the object for easy reference.
	 *
	 * @since 1.0.0
	 *
	 * @var object
	 */
	private static $instance;

	/**
	 * __construct initialize the class and hook into wordpress
	 *
	 * @return null
	 */
	public function __construct() {

	}

	/**
	 * Return a cached query
	 *
	 * @param  string $name_the_transient name of transient key
	 * @param  array  $args               query arguments
	 * @param  integer $expires           transient expiration in seconds
	 * @return Object                     the cached object
	 */
	public static function cache_query( $args = array(), $name_the_transient, $expires = 600 ) {

		$expires = apply_filters('radium_cache_query_time', radium_get_option('query_transient_cache_time', false, $expires), $name_the_transient);

		$args['suppress_filters'] = false;

		if( $expires == 0 || ! radium_get_option('query_transient') ) {

			 $query = new WP_Query( $args );

		 } else {

			if ( class_exists('SitePress') ) {

				global $sitepress;

				$current_lang = $sitepress->get_current_language();
				$name_the_transient = $current_lang ? $name_the_transient . $current_lang : $name_the_transient;
			}

			if ( false == get_transient($name_the_transient) ) {

				$query = new WP_Query( $args );

				set_transient( $name_the_transient, $query, $expires );

			} else {

				$query = get_transient($name_the_transient);

			}

		}

		return $query;

	}

	/**
	 * Wrapper around get_posts that utilizes object caching
	 *
	 * @access public
	 * @param mixed $args (default: NUL)
	 * @param bool $force_refresh (default: false)
	 * @return void
	 */
	public static function get_posts_cached( $args = array(), $name_the_transient, $expires = 600 ) {

		$expires = apply_filters('radium_get_posts_cached_time', radium_get_option('query_transient_cache_time', false, $expires), $name_the_transient);

		$args['suppress_filters'] = false;

		if( $expires == 0 || !radium_get_option('query_transient') ) {

			$posts = get_posts( $args );

		} else {

			if ( false == get_transient($name_the_transient) ) {

				$posts = get_posts( $args );

				set_transient( $name_the_transient, $posts, $expires );

			} else {

				$posts = get_transient($name_the_transient);

			}

		}

		return $posts;
	}

}