Shulou(Shulou.com)06/01 Report--

Today, I will talk to you about the advantages of using redis caching, which may not be well understood by many people. in order to make you understand better, the editor has summarized the following content for you. I hope you can get something from this article.

Redis (full name: Remote Dictionary Server remote Dictionary Service) is an open source API that is written in ANSI C language, supports the network, can be memory-based and persistent, and provides multi-language API.

Since March 15, 2010, the development of Redis has been presided over by VMware. Since May 2013, the development of Redis has been sponsored by Pivotal.

Benefits of using redis

(1) it is fast, because the data is stored in memory, and the advantage similar to HashMap,HashMap is that the time complexity of search and operation is O (1).

(2) supports rich data types and string,list,set,sorted set,hash

(3) transactions are supported, and all operations are atomic. the so-called atomicity means that changes to the data are either performed or not performed at all.

(4) rich features: can be used for caching, messages, set expiration time by key, and will be deleted automatically after expiration

Redis can set the expiration policy through expire, which is more suitable for CAPTCHA scenarios.

Redis is a key-value storage system. Similar to Memcached, it supports relatively more value types, including string (string), list (linked list), set (collection), zset (sorted set-ordered collection), and hash (hash type).

These data types support push/pop, add/remove, and take intersection union and difference sets, and richer operations, and these operations are atomic. On this basis, redis supports a variety of different sorting methods.

Like memcached, data is cached in memory for efficiency. The difference is that redis will periodically write updated data to disk or modify operations to additional record files, and on this basis to achieve master-slave (master-slave) synchronization.

After reading the above, do you have any further understanding of the advantages of using redis caching? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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