20+ Top Interview Questions and Answers (2024)

Ques 1

What is the difference between Memcached and Redis?

While both are caching systems, Memcached is a simple key-value store, and Redis is a more feature-rich data store with support for data structures like sets and lists.

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Ques 2

How does Memcached handle network partitions?

Memcached does not handle network partitions by default. Developers need to implement their own mechanisms, such as sharding and replication, to address network partition issues.

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Ques 3

How can you handle cache stampede in Memcached?

Cache stampede can be mitigated using techniques like setting short expiration times, implementing mutexes, or using lazy loading to refresh the cache.

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Ques 4

How can you secure Memcached servers?

Memcached servers can be secured by setting up firewall rules, using SASL (Simple Authentication and Security Layer), and configuring access controls to restrict unauthorized access.

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Ques 5

Explain Memcached thread safety.

Memcached is not thread-safe by default. To achieve thread safety, developers can use a separate Memcached instance for each thread or use a thread-safe library.

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What is the difference between Memcached and Redis?

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How does Memcached handle network partitions?

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How can you handle cache stampede in Memcached?

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How can you secure Memcached servers?

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Explain Memcached thread safety.

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