Robust Performance

ELB can simultaneously process hundred millions of connections.

High Availability

ELB is deployed in cluster mode and can route traffic across AZs, facilitating disaster recovery.

High Scalability

Incoming traffic is intelligently distributed to backend servers. ELB can work with Auto Scaling (AS) to flexibly expand service capabilities.

Easy to Use

Diverse set of protocols and algorithms enable you to configure traffic routing policies to suit your needs while keeping deployments simple.

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 an extremely 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.

Related Services

VPC

ECS

Anti-DDoS

Disaster Recovery

Disaster Recovery

ELB distributes incoming traffic across AZs and facilitates real-time disaster recovery. Enterprises 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

Flash Sales

Flash Sales

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

Advantages

  • Elastic Scaling

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

  • High Availability

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

  • High Performance

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

Related Services

VPC

ECS

AS

OBS

Functions

Multiple Protocols

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

  • Layer 4

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

  • Layer 7

    HTTP and HTTPS are supported, and multiple encryption protocols and cipher suites are available for HTTPS to ensure service flexibility and security.

High Availability

A variety of measures ensure high service availability and quality.

  • Health Check

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

  • Cross-AZ Load Balancing

    ELB distributes traffic 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 server within a certain time period to ensure continuous access.

  • Layer 4

    Source IP addresses are used to maintain sessions at Layer 4.

  • Layer 7

    Cookies are used to maintain sessions at Layer 7.

Elastic Scaling

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

  • Seamless Integration

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

  • Automatic Expansion

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