Robust Performance

ELB can simultaneously process hundred millions of connections.

High Availability

ELB is deployed in cluster mode and supports active-active disaster recovery across AZs.

High Scalability

Incoming traffic is intelligently distributed to ECSs. ELB can work with Auto Scaling (AS) to flexibly expand the service capabilities of your applications.

Easy to Use

ELB can be quickly deployed, and diverse protocols and algorithms are available, enabling you to easily configure load distribution policies for different scenarios.

Application Scenarios

  • High Traffic Websites

  • Disaster Recovery

  • Flash Sales

High Traffic Websites

High Traffic Websites

ELB intelligently distributes traffic to ensure smooth running of application services. This makes ELB the right choice for websites with a large number of simultaneous requests.

Advantages

  • Flexible Expansion

    ELB automatically scales according to changes in the incoming traffic.

  • High Performance

    ELB can simultaneously process hundred millions of connections, making it the right choice for scenarios involving a massive number of access requests.

Disaster Recovery

Disaster Recovery

ELB distributes incoming traffic across AZs, facilitating real-time disaster recovery. Enterprises like banks can use ELB to ensure high service availability.

Advantages

  • Flexible Expansion

    ELB automatically scales its request handling capacity according to the incoming traffic.

  • Uninterrupted Service

    ELB distributes traffic across AZs, ensuring service continuity even if an AZ becomes faulty.

Related Services

VPC

ECS

RDS

Flash Sales

Flash Sales

ELB works with AS to add more ECSs and balance the workload during promotion periods.

Advantages

  • Elastic Scaling

    ECSs are automatically added or removed according to changes in the service traffic.

  • High Availability

    ECS health status is regularly monitored and traffic is distributed only to healthy ECSs, ensuring service continuity.

  • High Performance

    ELB automatically scales to hundred millions of concurrent connections, making it the right choice for handling a large number of access requests.

Functions

Multiple Protocols

Multiple protocols are supported at layer 4 and layer 7, facilitating diverse application scenarios.

  • Layer 4 load balancing

    TCP and UDP are used to handle services that require high performance and simultaneous processing of a large number of access requests.

  • Layer 7 load balancing

    HTTP and HTTPS are used at layer 7, and multiple encryption protocols and cipher suites are available for HTTPS to ensure service flexibility and security.

High Availability

A variety of policies ensure high service availability and quality.

  • Health check

    ECS health status is regularly monitored and traffic is distributed only to healthy ECSs, ensuring service continuity.

  • Cross-AZ load balancing

    ELB can be deployed across AZs and ensures service continuity even if any AZ fails in the event of a disaster.

Sticky Sessions

Requests from the same client are forwarded to the same ECS within a certain time period to ensure continuous access.

  • Layer 4

    Load balancing at layer 4 maintains sessions using source IP addresses.

  • Layer 7

    Load balancing at layer 7 maintains sessions using cookies.

Elastic Scaling

ELB automatically scales its request handling capacity and works with AS to add or remove ECSs to improve service flexibility and reliability.

  • Seamless interconnection

    ELB interworks with AS to adjust the number of ECSs according to changes in the service traffic.

  • Automatic expansion

    ELB automatically scales to the incoming traffic to ensure user experience.

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