What is Redis and when to use it?

Question

Redis is commonly used as a cache to store frequently accessed data in memory so that applications can be responsive to users. With the capacity to designate how long you want to keep data, and which data to evict first, Redis enables a series of intelligent caching patterns. 7 окт. 2020 г.

When we should use Redis?

Redis can be used with streaming solutions such as Apache Kafka and Amazon Kinesis as an in-memory data store to ingest, process, and analyze real-time data with sub-millisecond latency. Redis is an ideal choice for real-time analytics use cases such as social media analytics, ad targeting, personalization, and IoT.

What is Redis and why it is used?

Redis is an open source (BSD licensed), in-memory data structure store used as a database, cache, message broker, and streaming engine. Redis provides data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes, and streams.

What should you not use Redis for?

7 Redis Worst Practices1No password. ... 2KEYS. ... 3Numbered databases/SELECT. ... 4Unbounded Returns with HGETALL, LRANGE, SMEMBERS, and ZRANGE. ... 5One request per connection. ... 6Hot keys. ... 7Running ephemeral Redis as a primary database.

When use Redis vs MySQL?

Redis also does not support Triggers, while MySQL allows Triggers. 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.

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