Persistent Image Processing

OverviewThe following example shows how to automatically process an image when you upload it to COS.When the image is uploaded successfully, COS(Cloud Object Storage) will save both the input and output images. You can later obtain the processing results using a general download request.Persistent Image Processing upon UploadSample code

CDN Cache Purging

OverviewCDN (Content Delivery Network CDN) cache purging is a Tencent Cloud COS (Cloud Object Storage) feature based on SCF (Serverless Cloud Function) to help users automatically purge their data cached on CDN edge servers. If you add a trigger rule to your bucket, then when you update files in the bucket, the SCF function provisioned by COS will be automatically triggered

Working with COSBench

COSBench OverviewCOSBench is an open-source benchmark tool developed by Intel for testing the performance of cloud object storage systems. As a cloud storage system compatible with S3 protocol, COSBench can be used to perform benchmark tests on the read/write performance of Tencent Cloud COS.System EnvironmentCentOS 7.0 or later.Performance FactorsCPU

Limiting Sizes of Uploaded Objects

Cloud Object Storage (COS) supports limiting object sizes upon the upload, which allows you to manage storage space flexibly by avoiding uploading objects that are too large or too small to make full use of the bandwidth and storage space. This document gives two samples to describe how to control the objects sizes in a refined way.PreparationsThe samples use the information below:APPID of the root account: 1250000000Bu

Cloud Data Backup

OverviewThis document describes how to back up data stored in the cloud. COS provides the following three methods to facilitate backup of data stored in COS:Backup and disaster recovery scheme based on cross-region replicationBatch data replication scheme (COS batch operation feature)Migration and backup scheme based on Migration Service Platform (MSP)

Object Tagging

OverviewThis document provides an overview of APIs and SDK code samples related to object tagging.APIOperationDescriptionPUT Object taggingSetting object tagsSets tags for an uploaded object

Storage Usage Fees

Storage usage refers to the storage used. The rate you are charged depends on the objects size and how long you stored them. For different storage classes, the unit price, minimum object size, and minimum storage duration period are different, which will be described below. The actual costs depend on the use case and storage class of the object.Note For the unit prices of storage usage

Append Object

OverviewThis API is used to upload an object to a bucket in the form of parts. If an object is uploaded using the Append Object API, it will be automatically determined as "appendable", while objects uploaded using other APIs are determined as "normal" (if you upload an object that already exists and the object type is appendable, the object type will be overwritten to "normal"). You can call the

Object Lock Overview

OverviewCOS introduces Object Lock to meet the requirements of Securities Exchange Commission (SEC) Rule 17a-4. Object Lock can help prevent objects from being overwritten or deleted for a fixed amount of time and objects can still be accessed immediately.Note SEC Rule 17a-4 is a regulation issued by the U.S. Securities and Exchange Commission under th

Object Access URL

OverviewThe Java SDK provides APIs to generate object URLs. You can distribute these URLs to clients for anonymous downloads/distribution. Note The URL generated using this API cannot be used to access private-read objects. A generated pre-si
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