阿里云无影

阿里云无影

阿里云是阿里巴巴集团旗下的云计算服务平台，为企业和开发者提供云计算、云存储、大数据处理、人工智能等技术服务。阿里云的无影技术，是一种基于虚拟化技术的快照备份功能。

无影技术具有以下特点：

秒级备份：无影技术可以在不影响服务运行的情况下备份数据，备份速度较快，可以进行秒级备份；

无损备份：由于备份过程不会对正在运行的服务造成影响，因此备份后的数据完全一致，无损备份；

按分钟级别回档：无影技术可以支持按照分钟级别的精细回档，轻松恢复误删数据或数据损坏的情况；

链式备份：无影技术支持链式备份，支持多版本备份，用户可以选择不同的备份版本进行恢复操作；

支持多种数据库：无影技术支持多种数据库，包括MySQL、SQL Server、Oracle等；

高可靠性：无影技术采用了分布式存储架构和多副本备份技术，保证数据的高可靠性。

Alibaba Cloud Shadowless

Alibaba Cloud is the cloud computing service platform under Alibaba Group, providing technical services such as cloud computing, cloud storage, big data processing, and artificial intelligence for enterprises and developers. Alibaba Cloud's Shadowless technology is a snapshot backup function based on virtualization technology.

Shadowless technology has the following characteristics:

Second-level backup: Shadowless technology can backup data without affecting the service operation, the backup speed is relatively fast and can be performed at the second level;

No-loss backup: since the backup process does not affect the running service, the backup data is completely consistent, and there is no loss in the backup;

Roll back at the minute level: Shadowless technology can support fine-grained rollback at the minute level, and easily recover from situations such as accidental deletion or data corruption;

Chain backup: Shadowless technology supports chain backup and supports multiple version backups. Users can choose different backup versions for recovery operations;

Support for multiple databases: Shadowless technology supports multiple databases, including MySQL, SQL Server, Oracle, and others;

High reliability: Shadowless technology uses distributed storage architecture and multi-replica backup technology to ensure the high reliability of data.