Are redis cache and redis database the same thing?

Same points: Based on Redis in-memory database, it supports multiple data structures. Differences: Purpose: The cache is used to store commonly used data and reduce latency; the database is used to store persistent data. Persistence: The cache does not provide persistence, the database supports persistence. Features: The database supports master-slave replication, transactions, and complex queries; caches generally do not support these features.

Redis cache and Redis database: similarities and differences

Same points:

• Use the same basic technology: Redis cache and Redis database are based on the Redis in-memory database, providing fast and efficient data storage and retrieval.
• Supports a variety of data structures: They can all store various data structures such as strings, hash tables, lists, sets, and ordered sets.

Differences:

Purpose and usage:

• Cache:Redis cache is primarily used to store frequently accessed data to reduce the latency of retrieving data from slower data sources such as databases. It prioritizes speed and low latency.
• Database: Redis database is used to store persistent data, which usually requires higher reliability and durability. It is typically used to store application state, user data, and other data that needs to be retained for a long time.

Persistence:

• Cache: Redis cache generally does not provide persistence, which means that across server restarts Or in the event of a failure, the stored data will be lost.
• Database: The Redis database supports persistence, allowing data to be recovered after a server failure or restart.

Other features:

• Replication: Redis database can achieve data redundancy through master-slave replication, and Redis cache This feature is generally not supported.
• Transactions: The Redis database supports transactions, allowing atomic operations on multiple keys, while the Redis cache generally does not support transactions.
• Query Language: The Redis database can perform complex queries through Redis Query Language (RQL), while the Redis cache usually provides more limited query capabilities.

Summary:

Although Redis cache and Redis database use the same technology, they differ in purpose, persistence, and other characteristics. Redis cache focuses on speed and low latency and is suitable for frequently accessed data, while Redis database provides durability, higher reliability and more comprehensive functions for data that requires long-term storage.

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