external load balancer

I. Main Server Load balancer Technologies 1. Cisco Ethernet channel network balancing) 2. WindowsNLB Technology 3. LinuxLVS Technology 4. Server Load balancer (such as F5) Ii. Redundancy Technology 1. CsicoHSRP Hot Backup route 2. Windows Cluster Technology 3. LinuxHA cluster technology 4. IBMAIX Cluster The

Build a Server Load balancer cluster with LVS in Linux Common open-source load balancing software: nginx, lvs, and keepalivedCommercial Hardware load equipment: F5, Netscale1. Introduction to LB and LVSLB clusters are short for load balance clusters.

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MySQL master/dual Server Load balancer MySQL dual-host master architecture, coupled with Load Balancing Devices, can achieve high performance and high availability of mysql database load balancing, the server Load balancer device

directory contains cache for newly registered members and online users. it is not suitable for inotify when files are updated frequently. Vi rsync. sh #! /Bin/sh # ***** Cd/opt/shell /bin/sh./rsync. sh>/dev/null 2> 1 Yesterday = 'date + % Y % m % d' Src =/opt/lampp/htdocs/bbs/data/cache Des = rsyncuser@192.168.1.23:/opt/lampp/htdocs/bbs/data/ Echo-e $ (date + % Y-% m-% d _ % H: % M: % S) "\ r"> rsynclog/rsync. $ {yesterday }. log Rsync-av -- delete $ {sr

A brief introduction to the principle1.HAProxyHaproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications, supporting virtual hosting, which is a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. Haproxy runs on today's hardware and can support tens of thousands of concurrent connections. and its operatin

A brief introduction to the principle1.HAProxyHaproxy provides high availability, load balancing, and proxies based on TCP and HTTP applications, supporting virtual hosting, which is a free, fast, and reliable solution. Haproxy is especially useful for Web sites that are heavily loaded, and often require session-hold or seven-tier processing. Haproxy runs on today's hardware and can support tens of thousands of concurrent connections. and its operatin

8009, changed to 20009. The redirectport is changed to 20043.★Comment out the original: ★Open the comment of the cluster element, and change the listening port tcplistenport of the worker Er element to 20011.Start Tomcat 2 and you will see the following prompt:In limit at1:14:25:46 org. Apache. Catalina. Cluster. tcp. simpletcpcluster memberaddedInformation: Replication member added: org. Apache. Catalina. Cluster. MCAST. mcastmember [TCP: // 192.168.1.192: 20011, Catalina, 192.168.1.192, 20011

First, the problems encounteredWhen we deploy a Web application with an IIS server, when many users have high concurrent access, the client responds very slowly and the customer experience is poor, because when IIS accepts a client request, it creates a thread that consumes large memory when the thread reaches thousands of. At the same time, because these threads are switching, the CPU usage is also high, which makes IIS more difficult to perform. So how do we solve this problem? Second, how t

Before a project needs to configure load balancing on Apache, because of the variety of things, time is tight, there is no time to get.Today, the time to test a piece, at least can be a proxy.You will now configure how the reverse proxy and load balancer are described separately.1. Reverse ProxySteps:(1) Open the reverse proxy module in Apache configuration file