Redis memory database for application of Exchange room

Source: Internet
Author: User
Tags memcached

Key-value Storage systems are a popular topic, especially when it comes to building large-scale Internet applications such as search engines, instant messaging, peer-to-peer, game servers, SNS, and providing cloud computing services.


Key-value Storage System more attention to the massive data access performance, distributed, extensibility support, do not need some characteristics of traditional relational database, such as: Schema, transaction, full SQL query support and so on.

Redis is a key-value storage system, also known as an in-memory database. Similar to memcached, it supports storing more value types, including string (string), list (linked list), set (set), and Zset (ordered collection). These data types support Push/pop, Add/remove, and intersection-set and difference sets, and richer operations, and these operations are atomic. Based on this, Redis supports sorting in a variety of different ways. As with memcached, data is cached in memory to ensure efficiency. The difference is that Redis periodically writes the updated data to disk or writes the modified operation to the appended record file, and Master-slave (Master-Slave) synchronization is implemented on this basis.

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Redis memory database for application of Exchange room

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