There are 9 data structure types in Redis: key-value pair: stores a single key-value pair; string: stores text, number, or binary data list: stores an ordered set of key-value pairs: stores unique values Sorted set: stores elements with scores, sorted by score Hash table: stores key-value pairs mapped to values Geospatial: stores geolocation and shape Hyperlog: records and stores large amounts of event streams: processes real-time data
Data structure type of Redis
Redis is an in-memory database that uses different data structures to store data. Each structure has its own unique properties and uses. The following lists the main data structure types in Redis:
Key-value pair
- Key-value pair is the most basic data structure, used to store a key and a value.
- The key is a string, and the value can be a string, list, hash table, or other data structure type.
String
- String is the simplest data structure in Redis.
- They can store text, numeric or binary data.
List
- A list is a collection that stores ordered key-value pairs.
- Each element in the list has an index that identifies its position.
Collection
- A collection is a collection that stores unique values.
- They are useful for finding whether a specific value exists.
Ordered Sets
- Ordered sets are similar to sets, but they preserve the ordering of their elements.
- Each element has a score and is sorted according to that score.
Hash table
- A hash table is a collection of key-value pairs where keys are mapped to values.
- Hash tables are great for finding and retrieving data quickly.
Geospatial
- Geospatial data structures allow storage of geographic locations and shapes.
- It is used for building map applications and other geography related functions.
Hyperlog
- Hyperlog is a data structure used to record and store a large number of events.
- It is mainly used for debugging and analysis purposes.
Stream
- A stream is a data structure used for processing data in a real-time environment.
- They are useful for processing data streams and building chat applications.
Each data structure type has its advantages and disadvantages, and the specific needs of your application must be considered when choosing which type to use.
The above is the detailed content of Data structure type used by redis database. For more information, please follow other related articles on the PHP Chinese website!