# Overview

This documentation is provided by Websoft9 (opens new window), it can help users to acquire skills of Redis Deployment, Installation, Configuration, HTTPS, SMTP, Backup, Upgrade, Connect Instance and more.

Redis (opens new window) is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker. It supports data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams. Redis has built-in replication, Lua scripting, LRU eviction, transactions and different levels of on-disk persistence, and provides high availability via Redis Sentinel and automatic partitioning with Redis Cluster.

# Improve

This document will continue to improve and broadly absorb the needs of users. If you have good idea, please don't hesitate to give us feedback by "Edit this page on GitHub", and welcome you to fork this documentation on Github (opens new window)

# Scope

The image library provided by Websoft9 has released on the top Cloud Platform and provides Chinese and English documents, which can be easily used by cloud users worldwide.