SLB provides load balancing services by distributing network traffic across multiple backend servers. This improves the service capability of applications. You can use SLB to prevent service interruption caused by single points of failure and improve the availability of applications. [Promotion] EIP International is available for use. Users in the China (Hong Kong) region can avail a 15% discount.
Benefits
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Zone-disaster recovery
Provides disaster recovery across zones. When failures occur in one zone, network traffic is automatically switched to other zones within 30 seconds.
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Traffic distribution
Distributes network traffic across multiple backend servers to improve the service capability.
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Ease of use
Provides multiple billing methods, metering methods and management methods. You can manage your service in a simplified and flexible way.
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High performance
Provides high-performance SLB instances of different specifications that have high processing capabilities.
Learn More
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Multiple protocols
Supports multiple protocols to meet your business requirements in various scenarios.
Protocols
Supports Layer 4 load balancing over TCP or UDP, and Layer 7 loading balancing over HTTP or HTTPS.
Certificate management
Provides certificate management for HTTPS requests to ensure the stability and security of transmission.
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Multi-level disaster recovery
Provides multi-level disaster recovery and high availability. This improves user experience.
Health checks
Monitors the condition of backend servers on a regular basis. SLB does not distribute network traffic to unhealthy backend servers to ensure availability.
Multi-zone deployment
Supports multi-zone deployment in specific regions to provide zone-disaster recovery.
Cluster deployment and session synchronization
SLB supports cluster deployment and session synchronization. You can perform hot upgrades, monitor the health and performance of machines in real time.
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High performance
Alibaba Cloud is the first cloud service provider to provide high-performance SLB instances.
High-performance SLB instances
Alibaba Cloud provides high-performance SLB instances of different specifications to ensure performance. The processing capabilities of high-performance SLB instances vary by specification.
High-performance specifications
You can specify the specification that has higher processing capabilities to meet your business requirements.
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Flexible scheduling
Supports multiple scheduling algorithms and forwarding methods to improve the flexibility of application deployment.
Scheduling algorithms
Supports WRR and WLC. You can specify scheduling algorithms to distribute network traffic based on your business requirements.
Domain name and URL forwarding
Distributes network traffic across backend servers based on domain names and URLs. This improves the flexibility of application deployment.
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Session persistence
Requests from the same source IP address are distributed to the same backend server within a specific period of time.
Session persistence based on source IP addresses
SLB supports session persistence that is based on IP addresses at Layer 4 (TCP).
Session persistence based on cookies
SLB supports cookie-based session persistence at Layer 7 (HTTP/HTTPS).
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Flexible management and billing
Allows you to specify the instance type and billing method based on your business requirements. Alibaba Cloud also provides multiple methods to manage your SLB service.
Scenarios
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Handles a large amount of network traffic for audio and video applications.
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Separates requests for static and dynamic contents in online games.
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Multi-level disaster recovery architecture
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Distributes a large amount of network traffic across backend servers.
Handles a large number of requests.
Automatically distributes a large number of network traffic across audio and video applications.
When users access audio and video applications, a large amount of network traffic is forwarded. In streaming scenarios, large traffic fluctuations occur. In these cases, the elasticity, stability, and availability of services are affected.
Issues resolved
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Improves scale-out capabilities.
You can add a backend server to an SLB instance or delete a backend server at any time to meet your business requirements.
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Handles a large amount of network traffic.
SLB can distribute a large amount of network traffic across multiple backend servers when your business rapidly grows.
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Improves the availability of applications.
Performs health checks on backend servers. SLB does not distribute network traffic to unhealthy backend servers. This ensures availability.
Separates requests for static and dynamic contents.
Separates requests for static and dynamic contents to ensure fast and stable delivery.
Separates requests for static and dynamic contents to ensure fast and stable delivery.
CDN accelerates the loading of static resources such as pictures in online games. When users interact with each other, a large amount of network traffic is forwarded. SLB can distribute the large amount of network traffic across backend servers to ensure that users can communicate with each other in real time.
Multi-level disaster recovery architecture
Cross-region and cross-zone disaster recovery
Supports intelligent DNS resolution to direct client traffic from different regions to applications. To provide disaster recovery within regions and zones, SLB distributes network traffic across backend servers.
Benefits
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Intelligent DNS resolution
Supports intelligent DNS resolution. Client traffic is directed to the best available IP addresses to accelerate transmission and improve user experience.
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Traffic distribution
In fast development scenarios, SLB can distribute a large amount of network traffic across multiple backend servers.
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Multi-level disaster recovery
DNS provides high availability across regions. SLB provides high availability across zones.
Distribution of mass traffic
Distributes a large amount of network traffic across backend servers.
In scenarios in which a large number of users access video websites, SLB can distribute the network traffic across multiple backend servers. Supports multi-region deployment. Nodes can access each other through high-speed connections.
Benefits
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High performance
Provides up to 10 Gbit/s bandwidth for connections over Express Connect circuits to meet the requirements for a large number of applications.
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Traffic distribution
SLB distributes network traffic across multiple backend servers to improve the scale-out capabilities.
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