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Memcached Interview Questions and Answers

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Ques 1. What is Memcached?

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

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Ques 2. Explain how Memcached works.

Memcached stores key-value pairs in memory to reduce the need for repeated database queries. It uses a simple and efficient hashing algorithm for distributed caching across multiple servers.

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Ques 3. What is the default port number for Memcached?

The default port for Memcached is 11211.

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Ques 4. How does Memcached handle data expiration?

Memcached uses a time-based expiration mechanism. Each key-value pair has a specified expiration time, and once the time is reached, the data is automatically evicted from the cache.

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Ques 5. What are the advantages of using Memcached?

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

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