Why is Redis faster than MySQL?

Question

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. 16 июл. 2019 г.

Why is Redis faster than SQL?

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. Primary memory is in lesser in size and much expensive than secondary so, Redis cannot store large files or binary data.

Is Redis better than MySQL?

While MySQL supports the XML data format, Redis does not. When concerning indexes, both allow them. However, MySQL supports secondary indexes without any restrictions while Redis only supports secondary indexes with the RediSearch module.

Why is Redis faster?

The reasons for the high performance of redis are as follows: Memory storage: redis uses memory (in memory) storage, without disk IO overhead. Single thread implementation: redis uses a single thread to process requests, avoiding the cost of thread switching and lock resource contention between multiple threads.

Why Redis cache is faster than DB?

Because it stores data in memory in the form of key value pair, we can store frequently accessed data in cache which are not changes very frequently. Reading from cache is much faster than database. Redis is one of the best solution in distributed cache market.

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