unequal cost load balancing

, this is just an ideal ), if TCP is used as the bearer protocol of the Service, it means that TCP will be continuously disconnected and reconnected-TCP and IP are related. If UDP is used, this problem will not occur, the cost is to record the connection information at the application layer. This is a problem with the absence of the Session Layer. Although some people do not agree with it, it is useless to say that the keyboard party does not use this

Configure upstream in Nginx for Load Balancing If Nginx does not have to proxy only one server, then it cannot be as popular as today. Nginx can configure proxy for multiple servers. When one server is down, the system remains available. The specific configuration process is as follows: 1. Add an upstream node under the http node. Upstream linuxidc {Server 10.0.6.108: 7080;Server 10.0.0.85: 8980;} 2. Config

/ip_forwardthen, you need to check if the actual server has NAT the server is not added as the default gateway:Route Add default GW 10.0.0.5010.0.0.50 to be NAT The server address. to use LVS NAT mode, perform these command line operations:Ipvsadm–a–t 122.12.12.12:80–s RRIpvsadm–a–t 122.12.12.12:80–r 10.0.0.100:8000–mIpvsadm–a–t 122.12.12.12:80–r 10.0.0.101:8000–mThe first line adds a virtual load Balancer scheduler; - s RR with simple polling RR sche

Timespan: 1.13-1.14Ke yang, Jianhua Gu, tianhai Zhao, guofei sun ,"An Optimized Control Strategy for Load Balancing Based on Live migration of Virtual Machine, "Chinagrid, pp.141-146,201 1 Sixth Annual chinagrid conference, 2011 1. This paper proposes a preliminary Virtual Machine migration method for the purpose of Server Load balancer.Resources to be considere

1 2 ——————————————————— Split Line —————————————————————- The problem with MySQL is actually due to a series of soft rib decisions, so we have to use middleware or other solutions to solve, including: Make a choice between forcing constraints and transactional and full-text indexing (InnoDb vs MyISAM) It is not easy to "impersonate" a transaction in the client code Inconsistent DB states are easy to obtain without enforcing constraints If there i

, the session problem, such as when I log in Server1, the next dynamic server group after polling may be assigned to SERVER2, will cause to log back in. The workaround is to configure the polling rule to hash according to the IP requested by the user, and then assign the corresponding server. The specific configuration is as follows:Upstream dynamic{Ip_hash; server 127.0.0.1:8080; server 192.168.0.203:8080;}This enables a user to have a single server node. This will not have the problem of dupli

Topic Link: PortalThe first time to see this question is not found that the problem and the split card is like, just a ring is a chain, so this problem obviously can be greedy ah, but because this is the network flow 24, so or it as the network flow of the topic to do itThis is a topic of cost flow, first of all the usual set up a source point, meeting PointWhy did you build it? , there are two possibilities of asking this question1. Too strong, pleas

operating system Solaris, SUN MySQL's share of the database market will increase further. Therefore, to deploy the MySQL server cluster with load balancing function in production environment has great practical significance for improving the speed, stability and scalability of enterprise database application system, and can also reduce the investment cost of app

n = number of Elite/WFE machine farms. The advantage here is that, theoretically, performance. By running the elite's WFE, reducing the # server to the server hops, end users should have faster performance. Cost is the appropriate potential for retrieving from SharePoint and cache size, while the bank opens multiple wfes. As you can see, there are pros and cons for each option. However, with the above information, as well as some knowledge and exper

This article is mainly about the simplest solution--dns polling.DNS PollingMost domain name registrars support the resolution of multiple A records, in fact, this is the DNS polling, the DNS server will resolve the request in accordance with the order of a records, one by one assigned to a different IP, so that the simple load balancing is completed.Advantages Basically no

rooms. This information can be judged according to the global information.The above about how the communication between the contents of the server, is a personal guess, QQ in the end how to do, I am afraid only after one of us into the Tencent to know. Oh. However, one thing is for sure, in the entire server architecture, there should be a place that is dedicated to keeping a global list of logged-in players, only in order to ensure that players do not log on repeatedly and enter multiple rooms

Introduction: Principle and thought the Gtid master-slave replication mode is chosen here to ensure the correctness, health and compatibility of master-slave replication. Here are two servers, a, b each has MySQL instance 3310, two instances between the master-slave replication mode using Gtid master-slave replication mode, the server A, A/b on the configuration of keepalived load balancer, through the VIP connection to the database, the purpose is th