Overview. This article is an introduction to Jedis, a client library in Java for Redis – the popular in-memory data structure store that can persist on disk as well. It is driven by a keystore-based data structure to persist data and can be used as a database, cache, message broker, etc.Click to see full answer. Hereof, is Jedis thread safe?A single Jedis instance is not threadsafe! To avoid these problems, you should use JedisPool, which is a threadsafe pool of network connections. You can store the pool somewhere statically, it is thread-safe. JedisPoolConfig includes a number of helpful Redis-specific connection pooling defaults.Furthermore, what is Redis and how does it work? Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker. It supports data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams. Just so, what is Redis cache in Java? Redis is a popular, open-source, in-memory data structure store that can be used as a database, cache, or message broker. Every time that you update or delete information stored in a local cache on one machine, you must update the in-memory caches on all machines that are part of the distributed cache.What is Redis pool?Redis-py provides a connection pool for you from which you can retrieve a connection. Connection pools create a set of connections which you can use as needed (and when done – the connection is returned to the connection pool for further reuse).