Why Redis is faster than database?

Question

Redis stores everything in primary memory. RDBMS stores everything in secondary memory. In Redis, Read and Write operations are extremely fast because of storing data in primary memory. In RDBMS, Read and Write operations are slow because of storing data in secondary memory.

Why is Redis faster than MySQL?

As a matter of fact, Redis keeps the data in-memory every time, but also persistent on-disk. So, it comes with a trade-off: Amazing speed with a size limit on datasets (as per memory). In this article, to have some benchmarks in comparison to MySQL, we will be using Redis as a caching engine only.

How fast is Redis compared to database?

The general answer is that Redis 10 - 30% faster when the data set fits within working memory of a single machine.

Is Redis cache faster than MySQL?

In terms of the efficiency of updating databases, Redis is superior to MySQL while SQLite is slowest. However, in terms of the efficiency of querying from databases, SQLite seems to be about ten times faster than Redis and MySQL.

Is Redis good as a database?

Redis is a great choice for implementing a highly available in-memory cache to decrease data access latency, increase throughput, and ease the load off your relational or NoSQL database and application.

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