负载均衡_SLB_ 对多台云服务器流量分发服务-阿里云

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对多台云服务器进行流量分发的负载均衡服务，可以通过流量分发扩展应用系统对外的服务能力，通过消除单点故障提升应用系统的可用性。【优惠活动】弹性公网IP国际线路类型上线，香港85折进行中。

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优点

: 同城容灾
可用区级的高可用，30秒内实现自动切换

: 流量分发
对多台云服务器自动进行流量分发，扩展系统服务能力

: 简明易用
多种付费类型、计费模式与管理方式，可灵活选择和轻松管理

: 超强性能
推出性能保障型实例，并提供超高性能规格的实例

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产品详情

多种协议支持

丰富的协议支持，满足您多样化的应用场景

具体协议
支持包含TCP协议和UDP协议的四层负载均衡，和包含HTTP协议和HTTPS协议的七层负载均衡

证书管理
针对HTTPS协议提供集中化的证书管理系统，满足用户的可靠、安全传输等需求
多层次容灾保障

提供多层次的容灾策略与高可用的用户体验

健康检查
定时检测后端云服务器运行状况，一旦检测到云服务器异常，则不会再转发流量到异常实例，保证可用性

多可用区
某些地域采用多可用区部署，轻松实现同城容灾

集群部署，会话同步
采用集群部署，各机器之间会话同步，从而支持热升级，机器故障和集群维护对用户透明
超强性能保障

针对负载均衡实例，首家提出性能保障的云计算厂商

性能保障型实例
推出性能保障型实例，实现不同实例间的性能隔离，提供相应规格下的性能保障

超大性能规格
针对有高性能需求的大客户，提供超大规格的负载均衡实例，从此性能不再是瓶颈
灵活调度

多种调度算法与转发模式，提升应用部署灵活性

调度算法
支持加权轮询和最小连接数调度算法，可根据自身需求选择相应算法来分配用户流量

域名URL转发
支持根据不同的域名和URL进行流量调度，提升应用系统灵活性
会话保持

将一定时间内来自同一用户的访问请求转发到同一服务器上处理，实现用户访问连续性

基于源IP的会话保持
四层（TCP）负载均衡通过IP地址实现会话保持

基于cookie的会话保持
七层(HTTP/HTTPS)负载均衡通过cookie支持会话保持
多种管理途径与付费方式

根据业务特征灵活选择实例类型与付费方式，多种管理途径轻松操纵负载均衡