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Learning PHP 7 High Performance by Altaf Hussain

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Redis – the key-value cache store

Redis is an open source, in-memory key-value data store that is widely used for database caching. According to the Redis website (www.Redis.io), Redis supports data structures such as strings, hashes, lists, sets, and sorted lists. Also, Redis supports replication and transactions.

Note

Redis installation instructions can be found at http://redis.io/topics/quickstart.

To check whether Redis is working fine on your server or not, start the Redis server instance by running the following command in the terminal:

redis server

Then issue the following command in a different terminal window:

redis-cli ping

If the output of the preceding command is as follows, the Redis server is ready to be run:

Redis provides a command ...

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