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The company last year on the F5, easy to use is good, but the cost is too high, so recently has been studying the soft load balancing this together, it happened early this year Google Open source seesaw, let oneself can bypass many detours. This is a summary of the load balancing
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
/wKiom1Vv4YDxx5EJAAGNwrgQ_E0823.jpg "height=" 433 "/ >Check server information650) this.width=650; "title=" 2015-06-03_161502 "style=" border-top:0px;border-right:0px;background-image:none; border-bottom:0px;padding-top:0px;padding-left:0px;border-left:0px;padding-right:0px; "border=" 0 "alt=" 2015-06-03_161502 "src=" http://s3.51cto.com/wyfs02/M00/6D/F5/wKioL1Vv4yCgGIX8AAGw0MfrnGg272.jpg "height=" 460 "/ >Select Network
Balancing method in LVs.IP load Balancing can be used with hardware devices or software implementations. The main products of hardware equipment is F5-BIG-IP-GTM (abbreviation F5), software products are mainly LVs, HAProxy, NginX. Which LVs, Haproxy can work on the 4-7 floo
Summary : For a large web site, load Balancing is an eternal topic. With the rapid development of hardware technology, more and more load balancing hardware devices emerge, such as F5 big-IP, Citrix NetScaler, Radware and so on, although can solve the problem, but its high p
For a large web site, load Balancing is an eternal topic. With the rapid development of hardware technology, more and more load balancing hardware devices emerge, such as F5 big-IP, Citrix NetScaler, Radware and so on, although can solve the problem, but its high price is of
absrtact : For a large web site, load Balancing is the eternal topic. With the rapid development of hardware technology, more and more load balancing hardware devices emerge, such as F5 Big-ip, Citrix netscaler, Radware, etc., although it can solve the problem, but its high
Load Balancing cluster (LB)How load Balancing clusters workWhen a user sends a request, the request is not immediately sent to the backend's real server (realservers), but is sent first to the Scheduler or Distributor (Director), and then the director, based on some scheduling algorithm, The request is sent to the back
identify the user's language when the user accesses your domain name, and then select the corresponding language server group for load Balancing. A load balancer is often referred to as a four-layer switch or a seven-layer switch. The four-layer switch mainly analyzes the IP layer and the TCP/UDP layer to achieve four-layer traffic
Load balancing is an eternal topic for a large web site. With the rapid development of hardware technology, more and more load balancing hardware devices emerge, such as F5 Big-ip, Citrix netscaler, Radware, etc., although it can solve the problem, but its high price is ofte
Vaguely or many years ago, was responsible for a relatively large project (China Telecom BDC), load balancing is indispensable. Hardware asked a lot of vendors, software has also tried some influential tools. According to the company at that time, the background of the project and the actual situation, the choice is the hardware scheme, the purchase of equipment is F5
1 Load Balancer Product introductionHardware-based load balancing devices such as F5,BIG-IP,Software-based load balancer product Haproxy,lvs,nginxIn these software products, it is divided into the implementation of soft load based
or avoiding the bottleneck of unbalanced network load distribution and long response time of data traffic congestion. For different Server Load balancer modes, Layer 2, Layer 3, Layer 4, and Layer 7 Server Load balancer of OSI reference models have corresponding Server Load balancer policies. =^The advantages and disa
IP Tunneling) is proposed through IP Tunneling ), and Virtual Server VS/DR (Virtual Server via Direct Routing) through Direct Routing, which can greatly improve system scalability. 2.1 VS/NAT Mode After the request sent by the client reaches Director, dire modifies the target address to a backend RIP (one of the hosts in the web server pool) based on the Load Balancing Algorithm and forwards it to the back
usersIt is best to provide support for heterogeneous systemsDynamically allocates and adjusts resources based on cluster nodes.The Load balancer distributes workload or network traffic among each service node of the cluster. The server Load balancer can be configured in a static manner in advance or based on the current network status to determine the specific node to which the
First, HAProxyHardware-based load balancing devices: F5,BIG-IP, etc.Software-based load balancing products: Haproxy,lvs,nginx, etc.In the software load balancing product, it is divided
balancer can be considered as a Job Scheduling System at the network level. Most network load balancers can implement a single system image at the corresponding layers of the network, the whole cluster can be reflected as a single IP address accessed by users, and the nodes of specific services are transparent to users. Here, the balancer can be configured statically or dynamically, and one or more algorithms
SummaryThis article mainly discusses the basic balancing algorithms and dynamic load balancing mechanisms in the network load balancing cluster system. Based on LVS, the poll algorithm is used to implement the dynamic negative fee
shared disk arrays, file systems, and floating IP addresses to make up a business-run environment. PCL provides a fully redundant server configuration for this environment. The advantages and disadvantages of this model: disadvantages: Node2 in Node1 normal work is in the "idle" state, resulting in the waste of server resources. Advantages: When the Node1 failure, the NODE2 can completely take over the application, and can ensure the application of the operation of the processing capacity requi
Abstract: This article discusses the server load balancer technology and load allocation strategies used by distributed network servers, and implements the server load balancer Gateway on FreeBSD based on network address translation, it is applied to our Internet server and distributes the load to multiple servers to s
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