二零二三年 优质公开课StorageCloudService3–ObjectStorageService.pptx

Shenzhen Polytechnic College of Electronics and Communication EngineeringStorage Cloud Service – Object Storage Service TargetAfter completing this course, you will be able to:Describe OBS products in Huawei cloud servicesMaster the concept, function and scenario of OBSMaster advantages and billing standards of OBSMaster the usage of common functions OBS IntroductionWhat is OBS?Object storage service (OBS) is an object-based mass storage service, which provides customers with mass, secure, highly reliable and low-cost data storage capabilities. OBS is suitable for storing any type of files, suitable for ordinary users, websites, enterprises and developers.Object is the basic unit of data stored in OBS. Data uploaded by the user is stored in the bucket of OBS in the form of object. The object properties include the following parts:Key: The name of object is a UTF-8 encoded character sequence with a length greater than 0 and no more than 1024. Each object in a bucket shall have a unique object name. Users can use bucket name + object name to store and obtain corresponding objects.Metadata: Object metadata describes the information of an object. Metadata can be divided into system metadata and user metadata. The system metadata is generated by the OBS system and used when processing object data. System metadata includes: Date, Content length, last modify, Content-MD5, etc. User metadata is specified when user uploads the object. It is information of the object described by users themselves. These metadata are uploaded to the OBS system in the form of key value pairs.Data: Data is the data content of the object.Generally, we manage objects as files, but since OBS is an object storage service, there is no concept of files and folders in the file system. In order to make it easier for users to manage data, OBS provides a way to simulate folders. By adding / to the object name, such as abc / 123.jpg, abc can be simulated as a folder, 123.jpg can be simulated as a file name