Api redis cache

Developers Backend
1

@webkul Hi. I tried caching the API through redis. And the error came out: Class ‘Predis\Client’ not found
url lesson: https://webkul.com/blog/how-to-use-redis-for-api-caching-in-cs-cart/
Helper.php:

<?php

namespace Tygh\Addons;

use Tygh\Registry;
use Predis\Client;

class Helper
{
    protected $redis;
    public function __construct()
    {
        $config = Registry::get("config");
        $this->redis = new Client([
            'scheme' => 'tcp',
            'host'   => $config['cache_redis_server'], // Adjust based on your Redis server 
            'port'   => $config['cache_redis_port'], // Adjust based on your Redis server 
        ]);
    }
    public function get($key)
    {
        $data = $this->redis->get($key);
        return $data !== null ? unserialize($data) : false;
    }
    public function set($key, $value, $expiration = 3600) 
    {
        $this->redis->setex($key, $expiration, serialize($value));
    }
}

way helper: Tygh\Addons\Helper

Api products:

public function index($id = 0, $params = array())
    {
        $redisCache = new Helper();
        // Check if data is cached in Redis
        $cacheKey = 'product_list';
        $cachedData = $redisCache->get($cacheKey);
        if ($cachedData !== false) {
            return array(
                'status' => Response::STATUS_OK,
                'data'   => $cachedData
            );
        }

        $status = Response::STATUS_OK;

        $lang_code = $this->getLanguageCode($params);
        $params['extend'][] = 'categories';

        if (fn_allowed_for('MULTIVENDOR')) {
            $vendor_id = $this->safeGet($params, 'company_id', null);
            if ($vendor_id) {
                Registry::set('runtime.vendor_id', $vendor_id);
            }
        }

        if ($this->getParentName() == 'categories') {
            $parent_category = $this->getParentData();
            $params['cid'] = $parent_category['category_id'];
        }

        if (!empty($id)) {
            $data = fn_get_product_data($id, $this->auth, $lang_code, '', true, true, true, true, false, false, false);

            if (empty($data)) {
                $status = Response::STATUS_NOT_FOUND;
            } else {
                $data['selected_options'] = $this->safeGet($params, 'selected_options', []);
                $products = $this->getProductsAdditionalData(array($data), $params);
                $data = reset($products);
            }

        } else {
            if (
                isset($params['pshort']) && YesNo::toBool($params['pshort'])
                || isset($params['pfull']) && YesNo::toBool($params['pfull'])
                || isset($params['pkeywords']) && YesNo::toBool($params['pkeywords'])
            ) {
                $params['extend'][] = 'description';
            }

            // Set default values to input params
            $default_params = [
                'match'            => 'all',
                'subcats'          => YesNo::YES,
                'pcode_from_q'     => YesNo::YES,
                'pshort'           => YesNo::YES,
                'pfull'            => YesNo::YES,
                'pname'            => YesNo::YES,
                'pkeywords'        => YesNo::YES,
                'search_performed' => YesNo::YES
            ];
            $params = array_merge($default_params, $params);

            $items_per_page = $this->safeGet($params, 'items_per_page', Registry::get('settings.Appearance.admin_elements_per_page'));
            list($products, $search) = fn_get_products($params, $items_per_page, $lang_code);
            $products = $this->getProductsAdditionalData($products, $search);

            $data = array(
                'products' => array_values($products),
                'params'   => $search,
            );
        }
        // Cache the product data
        $redisCache->set($cacheKey, $data, 3600);

        return array(
            'status' => $status,
            'data'   => $data,
        );
    }

What did I do wrong, please tell me.

2

Have you followed this step from the mentioned instruction?
image

3

Yes, but ‘Predis\Client’ not found

4

Probably the autoload.php generated by composer was placed to some wrong place.

In this case maybe it will be better to add the composer.json to the add-on (app/addons/addon_name/lib/composer.json):

{
  "require": {
    "predis/predis": "^2.2.2"
  }
}

Then run composer install for this composer.json.

And in the add-on’s 4.0 scheme specify to autoload the included library:

    <autoload>
        <psr4 prefix="Predis\">lib/vendor/path/to/the/src/folder</psr4>
    </autoload>