Introduction

BLB BLB

  • API Reference
    • Access control
    • API Service Domain Name
    • Appendix
    • Application BLB Interface
      • Application BLB Instance Related Interfaces
      • Application BLB Listener Related Interfaces
      • Application BLB Security Group Related Interfaces
      • Application BLB Server Group Related Interfaces
    • Application IPv6 BLB Interface
      • Application IPv6 BLB Instance Related Interfaces
      • Application IPv6 BLB Listener Related Interfaces
      • Application IPv6 BLB Security Group Related Interfaces
      • Application IPv6 BLB Server Group Related Interfaces
    • BLB Order Related Interfaces
      • BLB - Resize
      • BLB Charge Shift - Cancel Prepay to Postpay
      • BLB Charge Shift - Postpay to Prepay
      • BLB Charge Shift - Prepay to Postpay
      • BLB Inquiry
      • BLB Unsubscribe Interface
    • Document Update Records
    • Error code
    • Interface Specifications
    • Introduction
    • Load Balancer Dedicated Cluster LBDC Interface
      • LBDC Instance Related Interfaces
    • Service Publishing Point Interface
      • Service Publishing Point Related Interfaces
    • Standard BLB Interface
      • Standard BLB Instance Related Interfaces
      • Standard BLB Listener Related Interfaces
      • Standard BLB Real Server Related Interfaces
      • Standard BLB Security Group Related Interfaces
    • Standard IPv6 BLB Interface
      • Standard IPv6 BLB Related Interfaces
  • FAQs
    • Billing Problems
    • Common Questions Overview
    • Configuration-related questions
    • Fault-related questions
    • General Problems
    • Load Balancer Dedicated Cluster Related Issues
    • Performance-related questions
    • Security Problems
  • Function Release Records
  • Operation guide
    • Access control
    • Access Logs
    • Application BLB instance
    • Application IPv6 Instance
    • BLB metric description
    • Certification
    • Custom configuration
    • Extended domain name
    • General-purpose BLB instance
      • Creating BLB Ordinary Instance
      • Managing BLB Ordinary Instance
    • General-purpose IPv6 BLB instance
    • Identity and access management
    • IP Group Usage Guide
    • Load Balance Dedicated Cluster
    • Load Balancer Frontend and Backend Protocol Correspondence
    • Recording Access Logs Using VPC Flow Logs
    • Service Release Point
    • Tag Management
  • Product Description
    • Application scenarios
    • Basic Architecture
    • Basic concepts
    • Performance Specification Description
    • Product advantages
    • Product features
    • Product Introduction
    • Usage restrictions
  • Product pricing
    • Load Balancer Dedicated Cluster Billing
    • Load Balancer Instance Billing
  • Quick Start
  • SDK
    • GO-SDK
      • Application BLB Instance
      • Initialization
      • Install
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Ordinary BLB Instance
      • Overview
      • Service Release Point
      • Version Change Records
    • Java-SDK
      • Application BLB instance
      • General-purpose BLB instance
      • Initialization
      • Install the SDK Package
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Overview
      • Service Release Point
      • Version Update Description
    • PHP-SDK
      • Initialization
      • Install
      • Ordinary BLB Instance
      • Overview
    • Python-SDK
      • Application BLB Instance
      • Initialization
      • Install
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Ordinary BLB Instance
      • Overview
      • Service Release Point
      • Version Update Description
  • Service Level Agreement (SLA)
    • Description of Baidu AI Cloud Load Balancer Trusted Cloud certification service availability
    • LBDC Service Level Agreement SLA
    • BLB Service Level Agreement (V2.0)
  • Typical Practices
    • BLB Selection Guide
    • Health Check Exception Troubleshooting
    • Implementing BLB Association with Listeners, Real Servers, Security Groups, etc. via Terraform
    • Implementing Multi-Site Hosting via Application BLB
    • Load Balancer Security Protection Strategy
    • Managing BLB via Terraform
    • Obtaining Client Information via Application BLB Instance
    • Using IP Group Function to Mount Real Servers Across VPCs in Different Regions
    • Using IP Group Function to Mount Real Servers Across VPCs in the Same Region
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BLB BLB

  • API Reference
    • Access control
    • API Service Domain Name
    • Appendix
    • Application BLB Interface
      • Application BLB Instance Related Interfaces
      • Application BLB Listener Related Interfaces
      • Application BLB Security Group Related Interfaces
      • Application BLB Server Group Related Interfaces
    • Application IPv6 BLB Interface
      • Application IPv6 BLB Instance Related Interfaces
      • Application IPv6 BLB Listener Related Interfaces
      • Application IPv6 BLB Security Group Related Interfaces
      • Application IPv6 BLB Server Group Related Interfaces
    • BLB Order Related Interfaces
      • BLB - Resize
      • BLB Charge Shift - Cancel Prepay to Postpay
      • BLB Charge Shift - Postpay to Prepay
      • BLB Charge Shift - Prepay to Postpay
      • BLB Inquiry
      • BLB Unsubscribe Interface
    • Document Update Records
    • Error code
    • Interface Specifications
    • Introduction
    • Load Balancer Dedicated Cluster LBDC Interface
      • LBDC Instance Related Interfaces
    • Service Publishing Point Interface
      • Service Publishing Point Related Interfaces
    • Standard BLB Interface
      • Standard BLB Instance Related Interfaces
      • Standard BLB Listener Related Interfaces
      • Standard BLB Real Server Related Interfaces
      • Standard BLB Security Group Related Interfaces
    • Standard IPv6 BLB Interface
      • Standard IPv6 BLB Related Interfaces
  • FAQs
    • Billing Problems
    • Common Questions Overview
    • Configuration-related questions
    • Fault-related questions
    • General Problems
    • Load Balancer Dedicated Cluster Related Issues
    • Performance-related questions
    • Security Problems
  • Function Release Records
  • Operation guide
    • Access control
    • Access Logs
    • Application BLB instance
    • Application IPv6 Instance
    • BLB metric description
    • Certification
    • Custom configuration
    • Extended domain name
    • General-purpose BLB instance
      • Creating BLB Ordinary Instance
      • Managing BLB Ordinary Instance
    • General-purpose IPv6 BLB instance
    • Identity and access management
    • IP Group Usage Guide
    • Load Balance Dedicated Cluster
    • Load Balancer Frontend and Backend Protocol Correspondence
    • Recording Access Logs Using VPC Flow Logs
    • Service Release Point
    • Tag Management
  • Product Description
    • Application scenarios
    • Basic Architecture
    • Basic concepts
    • Performance Specification Description
    • Product advantages
    • Product features
    • Product Introduction
    • Usage restrictions
  • Product pricing
    • Load Balancer Dedicated Cluster Billing
    • Load Balancer Instance Billing
  • Quick Start
  • SDK
    • GO-SDK
      • Application BLB Instance
      • Initialization
      • Install
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Ordinary BLB Instance
      • Overview
      • Service Release Point
      • Version Change Records
    • Java-SDK
      • Application BLB instance
      • General-purpose BLB instance
      • Initialization
      • Install the SDK Package
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Overview
      • Service Release Point
      • Version Update Description
    • PHP-SDK
      • Initialization
      • Install
      • Ordinary BLB Instance
      • Overview
    • Python-SDK
      • Application BLB Instance
      • Initialization
      • Install
      • IPv6 BLB Instance
      • Load Balance Dedicated Cluster (LBDC)
      • Ordinary BLB Instance
      • Overview
      • Service Release Point
      • Version Update Description
  • Service Level Agreement (SLA)
    • Description of Baidu AI Cloud Load Balancer Trusted Cloud certification service availability
    • LBDC Service Level Agreement SLA
    • BLB Service Level Agreement (V2.0)
  • Typical Practices
    • BLB Selection Guide
    • Health Check Exception Troubleshooting
    • Implementing BLB Association with Listeners, Real Servers, Security Groups, etc. via Terraform
    • Implementing Multi-Site Hosting via Application BLB
    • Load Balancer Security Protection Strategy
    • Managing BLB via Terraform
    • Obtaining Client Information via Application BLB Instance
    • Using IP Group Function to Mount Real Servers Across VPCs in Different Regions
    • Using IP Group Function to Mount Real Servers Across VPCs in the Same Region
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  • Introduction

Introduction

Updated at：2025-10-16

Baidu Load Balance (BLB) is a stable, secure and efficient load balancer service provided externally by Baidu AI Cloud. It can balance application traffic, enable automatic failover, eliminate faulty nodes, and improve service availability. BLB provides Restful APIs externally. This document provides a detailed description of the API available to BLB. Currently, BLB provides Create/Query/Delete APIs, and Modify APIs will be released later.

When calling Baidu AI Cloud’s API for the first time, please watch the API Beginner's Video Guide to quickly master API calling capabilities.

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