Redis error "Connection read timed out" during caching - php

Question

I have Zend Framework project and I decided to use Rediska as Redis client.
Rediska has cache backend adapter for ZF - Rediska_Zend_Cache_Backend_Redis.
I fetch from DB collection of objects and try to save it in cache but get error: Connection read timed out. My example of code:
$rediskaOptions = array(
'name' => 'cache',
'namespace' => 'Cache_',
'servers' => array( 'cache' => array(
'host' => Rediska_Connection::DEFAULT_HOST,
'port' => Rediska_Connection::DEFAULT_PORT,
'password' => 'qwerty'
)
)
);
$cache = Zend_Cache::factory('Core', 'Rediska_Zend_Cache_Backend_Redis',
array('lifetime' => NULL, 'automatic_serialization' => true),
array('rediska' => $rediskaOptions), false, true
);
$cacheId = 'news_main';
if (!($topics = $cache->load($cacheId))) {
$topics = DAOFactory::getInstance()->getTopicDAO()->fetchTopic(1);
$cache->save($topics, $cacheId);
}
Size of content after serialization is 26787 bytes.
Maybe Redis have size limitations for sending?

Answer 1

If it helps, I am using Rediska with ZF as well. Here is how I set it up.
$options = array(
'servers' => array(
array( 'host' => '127.0.0.1',
'port' => 6379,
'alias' => 'cache'
),
//'name' => 'cache',
//'namespace' => 'Cache_'
)
);
$rediska = new Rediska($options);
$frontendOptions = array('automatic_serialization' => true);
$backendOptions = array('rediska' => $rediska);
$cache = Zend_Cache::factory( 'Core',
'Rediska_Zend_Cache_Backend_Redis',
$frontendOptions,
$backendOptions,
false,
true
);
A difference I see is in the backend options. I point rediska to a rediska instance.