wan load balancer comparison

Reprint: http://www.zyan.cc/f5_big_ip/In the recent comparison of testing the performance of F5 big-IP and Citrix NetScaler load balancers, write this article to document the common application configuration methods for F5 big-IP.Currently, many vendors have launched a load balancer dedicated to balancing server

Introduction to load Balancing clusters Main open source software LVs, keepalived, Haproxy, Nginx, etc. The LVS belong to 4 layer (network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, can also be used as 7 layer The Keepalived load balancing function is actually the LVS LVS This 4-tier load

Article Title: Linux Server Load balancer LVS simple settings. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. 　　 Simple terms: 　　 Director: Front-End Server Load balancer that runs

The LTM is local traffic management, which is commonly referred to as server load balancing. Multiple devices that provide the same service (pool) can be virtualized into a single logical device for user access. That is, for the user to see only one device, and actually the user is the service request is between multiple devices, through the load balancing algorithm sharing. It can often be understood as a

Today, the teacher talked about the server architecture. Although simple, there are still some difficulties. We need to expand the architecture on this basis. There is data synchronization during Server Load balancer. Baidu later saw the previous generation share: Inotify + Rsync is used to implement batch synchronization and batch update of Linux Files in batches. This should be a frequent task for O M pe

. In addition, various lvs have a complete dual-machine Hot Standby solution, therefore, you don't have to worry about the problem with the balancer itself. If the node fails, lvs will automatically identify the problem, so the system is very stable as a whole. 4. No traffic, as mentioned above. Lvs only distributes requests, but the traffic does not go out of it. Therefore, it can be used to distribute some lines. Without traffic, I/O performance of

The difference in principle between one or four-layer and seven-layer load balancingdiagram:Four-tier load balancing and seven-layer load balancing are simple differences in how they work:Overview:1. Four-layer load balancing works in the OSI model of the four layer, the transport layer. A four-tier

fails, lvs will automatically identify the problem, so the system is very stable as a whole.4. No traffic, as mentioned above. Lvs only distributes requests, but the traffic does not go out of it. Therefore, it can be used to distribute some lines. Without traffic, I/O performance of the balancer is not affected by large traffic.5. Basically, it supports all applications. Because lvs works on Layer 4, it can perform operations on almost all applicati

Both LVS and nginx can be used as multi-host load solutions. They have advantages and disadvantages. in the production environment, you need to analyze the actual situation and make use of it. First of all, I would like to remind you that technology is not a cloud, and my cloud is your cloud. At the same time, we should not be too conservative, too confident in the old method and wait for others to help you with the advance test. It is a good habit to

currently no performance monitoring templates for Nagios and cactiAdvantages of LVS:Good performance, close to hardware equipment network throughput and connection load capacity.LVS's Dr mode, which supports load balancing over a WAN. None of this other load balancing software is currently available.Disadvantages:More

page.Advantages of Haproxy:Its advantages just can be added to the shortcomings of Nginx. Supports session hold while supporting the detection of the status of the backend server by obtaining the specified URL.Supports load balancing in TCP mode. For example, you can load balance MySQL from the server cluster and mail server.Disadvantages:Virtual Host not supported (this is silly)There are currently no per

relatively small, it will return to the 400bad request page.Advantages of Haproxy:Its advantages just can be added to the shortcomings of Nginx. Supports session hold while supporting the detection of the status of the backend server by obtaining the specified URL.Supports load balancing in TCP mode. For example, you can load balance MySQL from the server cluster and mail server.Disadvantages:Virtual Host

Haproxy:Its advantages just can be added to the shortcomings of Nginx. Supports session hold while supporting the detection of the status of the backend server by obtaining the specified URL.Supports load balancing in TCP mode. For example, you can load balance MySQL from the server cluster and mail server.Disadvantages:Virtual Host not supported (this is silly)There are currently no performance monitoring

Comparison and summary of Linux Server LVS, Nginx, and HAProxy load balancers LVS features: 1. Strong anti-load capability. IP Server Load balancer technology is used only for distribution. Therefore, LVS does not generate much traffic; 2. good stability and reliability, and