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Redis
Redis is an in-memory data store used for very fast access patterns. It is commonly used for caching, session storage, rate limiting, pub/sub, and lightweight queue workloads.
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Key Concepts
Redis stores data in memory for very fast reads and writes.
It is often used as a cache in front of a database.
Expiration and TTL are important for cache design.
Redis supports multiple data structures such as strings, lists, sets, and hashes.
Common Interview Questions
What is Redis used for?
Why is Redis faster than traditional databases?
What is TTL in Redis?
Use Case
Use Redis for caching, session storage, queues, and fast access to temporary data.
Common Use Cases
Caching database query results.
Storing sessions and temporary user state.
Implementing rate limiting and lightweight queues.
Pros
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Cons
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