Dragonfly Cloud announces new enterprise security features - learn more

Dragonfly

Question: What are the error codes in Memcached?

Answer

Memcached is a popular distributed caching system that is used to speed up web applications by caching data in memory. While using Memcached, you may come across various error codes, which can help you diagnose and fix issues with your cache.

Here are some common error codes you may encounter while working with Memcached:

In addition to these error codes, Memcached also provides detailed error messages that can provide additional information about the nature of the error. For example, if you receive an ERR_NOT_FOUND error, the error message may indicate which key was not found in the cache.

Here's an example showing how to handle errors in PHP when working with Memcached:

$memcached = new Memcached();
$memcached->addServer('localhost', 11211);

$value = $memcached->get('my_key');
if ($memcached->getResultCode() == Memcached::RES_NOTFOUND) {
    echo 'Value not found in cache';
} elseif ($memcached->getResultCode() == Memcached::RES_SUCCESS) {
    echo 'Value retrieved from cache: ' . $value;
} else {
    echo 'Error retrieving value from cache: ' . $memcached->getResultMessage();
}

In this example, we use the getResultCode() method to check the result code of the previous Memcached operation. We then use an if-elseif-else statement to handle the various possible outcomes. Finally, we use the getResultMessage() method to retrieve the error message in case of an error.

Was this content helpful?

Other Common Memcached Questions (and Answers)

White Paper

Free System Design on AWS E-Book

Download this early release of O'Reilly's latest cloud infrastructure e-book: System Design on AWS.

Free System Design on AWS E-Book

Switch & save up to 80% 

Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement. Instantly experience up to a 25X boost in performance and 80% reduction in cost