round robin load balancing

applications have a limit on the number of CPUs that can be used. The server acts as a separate entity, which is a single point of failure in the solution. If only one server is responsible for passing the functionality of the component within the application, its failure can cause the application to fail. Adding servers increases the complexity of managing and monitoring server hardware and its associated software. Solution SolutionsInstall services or applications on more than on

case of a large number of connection requests, Load balancing device itself is easy to become the bottleneck of network overall performance Load Balancing Policy: 1. Round Robin: Each request from the network is alternately assigned to the internal server, from 1 to N and

Load BalancerIt can be a dedicated device or an application that runs on a common server. Distribute requests to servers that have the same content or provide the same services. Special purpose devices are generally only Ethernet interfaces, which can be said to be a multi-layer switch. The load balancer is typically assigned a virtual IP address, and all requests from the client are done for the virtual IP

from the entire LVS structure, director server is the core of the entire LVS, currently, the operating system for director server can only be Linux and FreeBSD, The linux2.6 kernel can support LVS without any setup, and FreeBSD as a Director server is not a lot of applications, performance is not very good. For real Server, almost all system platforms, Linux, Windows, Solaris, AIX, BSD series can be very well supported.3.4 Balancing StrategyLVS suppo

-speed cache technology of the proxy server to provide beneficial performance. However, it also has some questions. First, you must develop a reverse proxy server for each service. This is not an easy task. Although the reverse proxy server itself can achieve high efficiency, for each proxy, the proxy server must maintain two connections, one external connection and one internal connection, therefore, the load on the proxy server is very large for ext

Load BalancingMainstream open source software: LVS, keepalived, Haproxy, Nginx and so on;OSI Layer: LVS (4), Nginx (7), Haproxy (4, 7);The Keepalived load balancing function is actually the LVSLVS Load balancer can distribute other ports than 80, such as MySQL, while Nginx only supports HTTP, https, mail;LVS Introducti

request is sent. The f5. ltm series is widely used. F5-BIG-LTM-3600-4G-R 3.Load Balancing for Wan Server Load balancer is mainly applied to some large websites, and some people call it Remote Server Load balancer. for example, we have two Web servers, one at the Beijing IDC (China Netcom) and the other at the Guangz

The load master can provide many kinds of load balancing methods, that is, we often call the scheduling method or algorithm:Round robin (Round Robin)This method loops the received requests to each machine in the server cluster, which is the active server. If this is the case

member (node) in the queue has the same status. The rotation method simply rotates and selects members in the group. In the load balancing environment, the balancer sends new requests to the next node in the node queue in turn. In this continuous and cyclical manner, each cluster node is selected in turn under the same status. This algorithm is widely used in DNS domain name round

Http://publish.it168.com/2006/0315/20060315030001.shtml 1. DNS load balancing method The RR-DNS (round-robin Domain Name System) takes turns by: In a DNS server,You can configure the same name for multiple IP addresses. When the client queries this name, it will get an address when parsing this name. Therefore, for the same name, different clients will get differ

Load Balancing (Balance) is one of the factors that must be considered in the design of distributed system architecture.It usually means to allocate the request/data "evenly" to multiple operation units, and the key of load balancing is "uniformity". The uniformity here is not the 10÷2 = 5 we imagined, which is even. N

number of users that can be supported by the cluster system and the time required to process a request. 　　 Among the many existing methods of balancing server load, the following two methods are widely studied and used: 　　 DNS Load Balancing Method Rr-dns (round-robin D

;Short delay, suitable for streaming media and other applications with high latency requirements High performance with high throughput The server can receive the real Access source client IP address directly can only do 4-tier load balancing, 7-tier service cannot be optimized (such as compression, etc.) cannot be used Need to configure the loopba

The load master can provide many kinds of load balancing methods, that is, we often call the scheduling method or algorithm:Round robin (Round Robin)This method loops the received requests to each machine in the server cluster, which is the active server. If this is the case

none are included then $request_uri make similar choices in, and so on. Whichever way you choose to keep the session consistent, if the selected server is not available, the next server will continue processing in the server list according to the load Balancing algorithm (such as Round-robin). Real-time Health check As mentioned earlier, Nginx has two major func

of the application itself. Stability is an effective measure of many factors affecting system performance, including the maximum number of users that can be supported by the cluster system and the time required to process a request. Among the many existing methods of balancing server load, the following two methods are widely studied and used: DNS Load

E-commerce Web site technology architecture with over 1 million visits The first introduction to E-commerce Web site high-performance, highly available solutions. From the frame composition of the scheme, the application is lvs+keepalived load balance. Achieve high-performance, highly available solutions (server clusters, load Balancing, high-performance, high

high throughput The server can receive the real Access source client IP address directly can only do 4-tier load balancing, 7-tier service cannot be optimized (such as compression, etc.) cannot be used Need to configure the loopback address on the server A common scheduling algorithm for server load

efficiency, for each proxy, the proxy server must maintain two connections, one external connection and one internal connection, therefore, the load on the proxy server is very large for extremely high connection requests. The reverse proxy can execute the load balancing policy optimized for the application protocol, and only access the idle internal server at a

-HashKeyword. Each internal address is always converted to the same conversion address. Inbound Server Load balancer The address pool can also be used to achieve Load Balancing for inbound connections. For example, the inbound web server connection can be allocated to a group of servers: web_servers = "{ 10.0.0.10, 10.0.0.11, 10.0.0.13 }"rdr on $ext_if proto tc