What are the five data types and usage scenarios of redis
Redis provides five data types, namely: string: stores text, JSON data, cache, counter; Hash: stores user data, session information, object attributes; list: stores queue, timeline , ranking, shopping cart; collection: stores tags, categories, watch lists, blacklists; ordered collection: stores rankings, voting, priority queues, and time series.
Redis’s five data types and usage scenarios
Redis provides a variety of data types to meet different needs Data storage and processing requirements, each data type has its unique characteristics and usage scenarios.
1. String
- Features: simple, sortable, supports binary security
- Usage scenarios: storing text, JSON data, cache, counter
2. Hash
- Features: key-value pair storage, supports field-level operations
- Usage scenarios: storing user data, session information, object attributes
3. List
- Characteristics: Ordered Set, supports insertion, deletion, and pruning
- Usage scenarios: storage queue, timeline, ranking, shopping cart
4. Set
- Features: Unordered collection of unique elements, supports intersection, union, difference set
- Usage scenarios: storage tags, classifications, watch lists, blacklists
5. Sorted set
- Features: ordered set, with weight value, supports range retrieval and ranking
- Usage scenarios: Store rankings, voting, priority queues, time series
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