Redis five data structures and usage scenarios
Redis provides five data structures: strings (storing simple data), hash tables (storing object data), lists (storing message queues), sets (storing unique elements) and ordered sets (by Rating stores sorting elements).
Five data structures and usage scenarios of Redis
Redis is a popular key-value storage database. It supports five basic data structures: strings, hashes, lists, sets, and sorted sets.
1. String
- Description: Binary safe string.
- Usage scenarios: Store simple data, such as name, password, and count.
2. Hash table (Hash)
- Description: A mapping that uses key-value pairs to store data.
- Usage scenarios: Store object data, such as user information and shopping carts.
3. List
- Description: An ordered set of elements that can be inserted from both ends or Delete elements.
- Usage scenarios: Store message queue and recent viewing records.
4. Set
- Description: A collection of elements without duplicate elements.
- Usage scenarios: Store a list of unique items and a collection of followed users.
5. Sorted Set
- Description: An ordered set of elements with scores, available Sort by rating.
- Usage scenarios: Store rankings and time-based score rankings.
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