load balancing web services

Recently, one of the company's main website revision finished finally on the line, involving me for half a year, and now finally have time to sit down to write something, summed up their technical experience. This time, according to the number and quality of the server, I use load balancing high redundancy architecture, consider single point of failure, the web a

I built the Tomcat+nginx load Balancer cluster, the LVM load Balancing cluster, I'm going to get a haproxy load Balancer cluster, the three clusters I have to realize the LVS performance is really good (DR) but in the construction process is too cumbersome, Nginx is the use of upstream module cluster but the cluster no

Brief introductionHaproxy is a free and open source software written in the C language that provides high availability, load balancing, and application proxies based on TCP and HTTP. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. The haproxy runs on the current hardware and can support

port.Download Nginx's address is as follows:Nginx Download:http://nginx.net/Download of the version used in this test:nginx/windows-0.8.22 Download extract to C:, change directory name to Nginx OK, here goes the practice: First: In the local (172.10.1.97) server, IIS creates a Web site using a port of 808, as shown below: IIS Web site bindings settings diagram Second: Create a

接成功后, back-end server response time (proxy receive timeout) - proxy_buffer_size 4k; #设置代理服务器 (nginx) buffer size for saving user header information + proxy_buffers 4 32k; #proxy_buffers缓冲区, the average web page is below 32k, so set A proxy_busy_buffers_size 64k; #高负荷下缓冲大小 (proxy_buffers*2) at proxy_temp_file_write_size 64k; #设定缓存文件夹大小, greater than this value, will be transmitted from the upstream server - } -}

test.html, test locally650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/72/CF/wKioL1XtvaCAiL6lAACoflN81dY461.jpg "title=" Qq20150908003156.png "alt=" Wkiol1xtvacail6laacofln81dy461.jpg "/>1. Modify the Nginx master profile to remove lines and blank lines that begin with # in the main configuration file.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/72/CF/wKioL1XtwCPjEXCXAABnyoChrG4296.jpg "title=" Qq20150908004237.png "alt=" Wkiol1xtwcpjexcxaabnyochrg4296.jpg "/>650) this.

Reprinted please indicate from "LIU Da's csdn blog": http://blog.csdn.net/poechant For more articles, refer to the csdn column nginx high-performance WEB server orBackend server development series-practical nginx High-Performance Web Server Nginx's httpupstreammodule provides simple Load Balancing for backend servers.

capability. First, increase the number of tomcat threads to 1000, and find that the number of errors 500 and 502 has dropped to dozens, but the response time has not improved yet. Later, two tomcat servers were started, and nginx was used for load balancing. the response time dropped by 40%. the processing duration of the two tomcat servers was kept at about 1 second.It seems that tomcat performance is ind

High-availability web load balancing with lvs and keepalived in CentOS Topology Install keepalived[Root @ node1 ~] # Yuminstall-ykeepalived Modify the keepalived MASTER configuration file[Root @ node1 ~] # Vim/etc/keepalived. conf! ConfigurationFileforkeepalivedglobal_defs {icationication_email {acassen@firewall.locfailover @ firewall.locsysadmin@firewall.loc} n

1 causeRecently, a stress test was conducted on the newly developed web system, and it was found that the response speed of concurrent logon home pages under tomcat's default configuration pressure to 600 people was severely affected, more than 2000 errors of 500 and 502 occur in one round. I made a look at the logon time statistics and printed out the total server processing time. I saw that some responses were indeed within 20 seconds, however, the