Redis data types on Docs

Compare data types

Mon, 01 Jan 0001 00:00:00 +0000

Redis provides a wide range of data types to store your data. The following are highly specialized for precise purposes:

Geospatial: store strings with associated coordinates for geospatial queries.
Vector sets: store strings with associated vector data (and optional metadata) for vector similarity queries.
Probabilistic data types: keep approximate counts and other statistics for large datasets.
Time series: store real-valued data points along with the time they were collected.

The remaining data types are more general-purpose:

Redis Strings

Mon, 01 Jan 0001 00:00:00 +0000

String command summary (view reference, 25 commands)

Redis strings store sequences of bytes, including text, serialized objects, and binary arrays. As such, strings are the simplest type of value you can associate with a Redis key. They're often used for caching, but they support additional functionality that lets you implement counters and perform bitwise operations, too.

Redis lists

Mon, 01 Jan 0001 00:00:00 +0000

List command summary (view reference, 22 commands)

Redis lists are linked lists of string values. Redis lists are frequently used to:

Redis sets

Mon, 01 Jan 0001 00:00:00 +0000

Set command summary (view reference, 17 commands)

A Redis set is an unordered collection of unique strings (members). You can use Redis sets to efficiently:

Redis hashes

Mon, 01 Jan 0001 00:00:00 +0000

Hash command summary (view reference, 28 commands)

Redis hashes are record types structured as collections of field-value pairs. You can use hashes to represent basic objects and to store groupings of counters, among other things.

Redis sorted sets

Mon, 01 Jan 0001 00:00:00 +0000

Sorted set command summary (view reference, 35 commands)

A Redis sorted set is a collection of unique strings (members) ordered by an associated score. When more than one string has the same score, the strings are ordered lexicographically. Some use cases for sorted sets include:

Redis geospatial

Mon, 01 Jan 0001 00:00:00 +0000

Geospatial command summary (view reference, 10 commands)

Redis geospatial indexes let you store coordinates and search for them. This data structure is useful for finding nearby points within a given radius or bounding box.

Redis bitmaps

Mon, 01 Jan 0001 00:00:00 +0000

Bitmap/bitfield command summary (view reference, 7 commands)

Bitmaps are not an actual data type, but a set of bit-oriented operations defined on the String type which is treated like a bit vector. Since strings are binary safe blobs and their maximum length is 512 MB, they are suitable to set up to 2^32 different bits.

Redis bitfields

Mon, 01 Jan 0001 00:00:00 +0000

Bitmap/bitfield command summary (view reference, 7 commands)

Redis bitfields let you set, increment, and get integer values of arbitrary bit length. For example, you can operate on anything from unsigned 1-bit integers to signed 63-bit integers.