I'm using Laravel's cache system with Redis (phpredis driver) and encountered an issue where $connection->del($key) does not delete the key, but using executeRaw(['DEL', $key]) does.

Setup Details: Laravel version: 10.0.3 Redis client: phpredis Redis version: 7.4.1 Cache prefix: laravel_cache_solar_cache For the project we use docker containers, Redis is in a separate container, but I don't think this is the issue.

I have the following Redis key stored: laravel_cache_solar_cache:v1/verticals-menu:userId:4:b6f331f8f609d4bf3e9f4568bd69aacba4e464aa

When I try to delete it using Laravel's Redis connection:

$connection->del($key);

it does not get deleted.

However, using executeRaw(['DEL', $key]) does work:

Additionally, Cache::delete($key) also works, but since we have a cluster configuration, it is not a suitable approach for us.

P.S. This is how the redis connection is initialised:

foreach ($this->clusterConnectionNames as $clusterConnectionName) {
        try {
            $this->logService->info("Processing crossClusterFlushByKeys for cluster '$clusterConnectionName'");
            /** @var RedisStore $store */
            $store = Cache::store($clusterConnectionName)->getStore();
            /** @var PhpRedisConnection $connection **/
            $connection = $store->connection();
            // Retrieve Redis prefixes from configuration
            $prefix = Config::get('database.redis.options.prefix');
            $cachePrefix = $store->getPrefix();
            $scanPatternBase = $prefix . $cachePrefix;

            // Initialize a counter for the total number of keys deleted in this cluster
            $totalDeleted = 0;

            foreach ($keysForDeletion as $baseKey) {
                $matchPattern = $scanPatternBase . $baseKey . "*";
                $cursor = null;

                do {
                    $scanResult = $connection->scan($cursor, [
                        'match' => $matchPattern,
                        'count' => 1000
                    ]);

                    if ($scanResult === false) {
                        $this->logService->warning("SCAN command failed for pattern '$matchPattern' on cluster '$clusterConnectionName'");
                        break;
                    }

                    [$cursor, $matches] = $scanResult;

                    if (!empty($matches)) {
                        $this->logService->info("Deleting " . count($matches) . " keys from cluster '$clusterConnectionName'", [
                            'keys' => $matches
                        ]);

                        foreach ($matches as $key) {
                            $connection->executeRaw(['DEL', $key]);
                        }
                    }
                } while ($cursor != 0);
            }
            $this->logService->info("Total keys deleted from cluster '$clusterConnectionName': $totalDeleted");

This implementation works, but if we use $connection->del($key); It is not deleting the key.