Redis Learning Notes (i)

Learn Redis, memcached database to find work with reserve knowledge

First Redis, key-value pair storage, data structure database, String Hash List sort zsort five types.

Learn from the following aspects

First, understand the basic concept

II. Basic types of operations

Third, master-slave configuration

Iv. Data Recovery

V. Zabbix monitoring Redis

Six, parameter optimization

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

Redis is a high-performance Key-value database. The emergence of Redis, to a large extent, compensates for the lack of memcached such key/value storage, in some cases can be a good complement to the relational database. It provides clients such as Java,c/c++,c#,php,javascript,perl,object-c,python,ruby,erlang, which is convenient to use.

Redis supports master-slave synchronization. Data can be synchronized from the primary server to any number of slave servers, from the server to the primary server that is associated with other slave servers. This enables Redis to perform single-layer tree replication. You can write to the data intentionally or unintentionally. Because of the full implementation of the publish/subscribe mechanism, you can subscribe to a channel and receive a complete message release record from the master server when the tree is synchronized anywhere from the database. Synchronization is helpful for the scalability and data redundancy of read operations.

Redis's help is very good after connecting it directly and then the TAB key can be freely selected, can also be completed

If Help @ser press TAB to display the properties at the beginning of @ser

Redis info can view all parameter configurations and the status of the current database

This article is from "Yun Weibang" blog, please be sure to keep this source http://aklaus.blog.51cto.com/9724632/1827796

Redis Learning Notes (i)