What data structures can be used in Redis for storing and processing information?

Redis provides several core data structures for storing and processing information:

• Strings — the basic type, can store text or binary data.
• Lists — ordered collections of strings, support adding and removing from both ends.
• Sets — unordered collections of unique elements, support intersection, union, and difference operations.
• Sorted Sets — sets with a numerical score assigned to each element, elements are ordered by this score.
• Hashes — collections of key-value pairs, useful for storing objects.
• Bitmaps — allow working with bitwise operations.
• HyperLogLogs — for estimating the number of unique elements with a small error margin.
• Streams — for working with sequences of messages.

The choice of structure depends on the task: for example, lists are used for queues, sets for unique collections, and sorted sets for rankings.