面试题与答案

Memcached is a high-performance, distributed memory caching system used to speed up dynamic web applications by alleviating database load.

The default port for Memcached is 11211.

Advantages of Memcached include improved performance, reduced database load, scalability, and ease of use as a distributed caching solution.

Memcached buckets are logical containers that allow the grouping of related caches. They help organize and manage different sets of data.

You can add or update a value in Memcached using the 'set' command. If the key already exists, it will be updated; otherwise, a new key-value pair will be created.

The default max connection limit for Memcached is 1024. It can be configured in the Memcached server settings.

Data can be retrieved from Memcached using the 'get' command by providing the key associated with the desired value.

In case of a cache miss, Memcached retrieves the data from the underlying storage (e.g., database) and stores it in the cache for subsequent requests.

The default max item size in Memcached is 1 MB. It can be adjusted based on the application's requirements.

The connection timeout in Memcached specifies the maximum time a client is allowed to establish a connection with the server. It is set in seconds.