典型的几个负载均衡算法.pptx

该【典型的几个负载均衡算法 】是由【wyj199215】上传分享，文档一共【11】页，该文档可以免费在线阅读，需要了解更多关于【典型的几个负载均衡算法 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。Load Balancing Modes
Static Modes:
round_robin
ratio
Dynamic Modes:
least_connection
fastest
observed
predictive
dynamic Ratio
Failure Mechanisms:
minimum active members
fallback Host
Load Balancing – Round Robin
Clients
Router
BIG-IP Controller
Servers
Client requests are distributed evenly
Internet
1
2
3
4
6
7
8
Load Balancing - Ratio
1
2
3
4
5
6
7
Internet
Administrator sets ratio for distributing Client requests 3:1:1:1
Clients
Router
BIG-IP Controller
Servers
9
10
11
12
Load Balancing – Minimum Active Members
The number of members that must be active in a priority group in order for the BIG-IP Controller to send its requests to that group
Clients
Router
BIG-IP Controller
Servers
Internet
Priority 1
Priority 2
Minimum Active Members = 2
1
2
3
4
5
6
Load Balancing – Minimum Active Members
Clients
Router
BIG-IP Controller
Servers
Internet
Priority 1
Priority 2
Minimum Active Members = 2
If the number of active members falls below this number, requests are sent to the next highest priority group
1
2
3
4
5
6
Load Balancing - Fastest
Clients
Router
BIG-IP Controller
Servers
Next requests go to Node with shortest response time
1
2
Internet
10ms
5ms
20ms
17ms
Current Response Times
Load Balancing - Fastest
Clients
Router
BIG-IP Controller
Servers
Next requests go to Node with shortest response time
101
102
Internet
14ms
15ms
20ms
11ms
Current Response Times
Load Balancing – Least Connection
Clients
Router
BIG-IP Controller
Servers
1
2
Internet
Next requests goes to Node with fewest number of connections
462
460
455
465
Current Connections
Load Balancing – Least Connection
Clients
Router
BIG-IP Controller
Servers
Internet
Next requests goes to Node with fewest number of connections
61
62
342
330
338
335
Current Connections
Load Balancing – Observed
Clients
Router
BIG-IP Controller
Servers
Next requests goes to Node with combination of fewest connections and best response
1
2
Internet