round robin dns vs load balancing

But if the site has an average of more than 200 requests per second, then the problem is: This is already the best Web server, what should I do? The same scenario applies to the database. To solve this problem, we need to understand the principle of "load balancing". How Web servers do load Balancing The most importa

of security, reliability, and load balancing capabilities. Cisco's innovative DHCP address allocation scheme CNR (Cisco Network Register) it can effectively solve the above problems and support other services such as TFTP and DNS ｡ 1) distributed design of DHCP Server Cisco D Two Cisco dhcp cnr servers are deployed on the two core Switches of the network. The tw

eventually sends the request to the application server;6. After the application server completes the user request, it is returned directly to the user through the reverse proxy server, without having to pass the LVS server. 3 , IP aliasesThe above is the situation from the user's point of view of the data, in this case, will involve a technology, that is IP aliases. It is important for the implementation of direct routing load

Enterprises generally lease multiple ISP links to avoid network availability risks caused by single ISP link failure and solve network access problems caused by insufficient network bandwidth. How to properly use multiple ISP links does not cause resource waste, but also improves the quality of network services. This article will focus on analyzing several methods of link load balancing, and explain the imp

Introduction to load Balancing clusters? Mainstream open source software LVs, keepalived, Haproxy, Nginx, etc.? where LVs belongs to Layer 4 (Network OSI 7 layer model), Nginx belongs to 7 layer, Haproxy can be considered as 4 layer, also can be used as 7 layerThe Keepalived load balancing function is actually LVS.? LV

; proxy_pass http: // tomcats ;}}} 2. Use this configuration file to start nginx (disable nginx before startup) [Root @ iZ28b4kreuaZ bin] #/usr/local/nginx/sbin/nginx-c/usr/local/nginx/conf/nginx-tomcat.confIi. Detailed description of the configuration file: Worker_processes 2; events {worker_connections 1024;} http {include mime. types; default_type application/octet-stream; # configure a group of backend servers for upstream, # after the request is forwarded to upstream, nginx sends a request

servers, 192.168.81.51 and 192.168.81.234 One VIP 192.168.81.229 Each of the above redis-server instances starts with port 6379. The VIP is on the master, and the round robin is switched to one of the servers. (The data volume of each customer is different, and redis is basically a persistent connection. Unlike Http, it is not completely load balancing) Master s

ASP. NET site for load balancing:based on the HTTP protocol we may find that we have two points to solve:the first is load balancing, we need a load balancer. it can be done by DNS polling, which is configured on the DNS server to

18.6 Load Balancing Cluster introductionThe software that realizes load Balancing cluster is: LVS, keepalived, Nginx, Haproxy and so on. The LVS belong to four layer (network OSI model), Nginx belongs to seven layer, haproxy can be considered as four layer, also can be used as seven layer.LVS, Haproxy this four-tiered

Policy Nginx provides three methods: Round Robin, user IP hash, and specified weight. By default, nginx will provide you with Round Robin as a load balancing policy. But this does not necessarily satisfy you. For example, if a series of accesses in a certain period of time are initiated by the same user Michael, the

default route of the link, of course, you can also do NAT on both routers, through DNS to control the external traffic access, when doing PBR also exclude the local server address, if there is VPN traffic, Also pay attention to the control of VPN traffic. Using PBR to implement VLAN-based load Balancing PBR (policy-based Routing) policy-based routi

the hosts on the server cluster, so that they are responsible for processing these requests and giving them, and the process of allocating requests is generally the kind of round-robin request pictured above, and of course there is an address translation technology that becomes NAT technology (also called Do network address translation technology is to request the address from the routing address to the cluster server in the IP address of a server, w

on the Web server. (1) The upstream command of the scheduling algorithm nginx is used to specify the backend servers used by proxy_pass and fastcgi_pass, that is, the reverse proxy function of nginx, therefore, the two can be combined to achieve load balancing, while nginx also supports multiple scheduling algorithms: 1. Round Robin (default) each request is dis

What is load balancing (LB)Evenly distributed traffic on the back end of the server is load balancing, so the more support concurrent TCP connections, memory usage and process occupancy is lower, while supporting a variety of load balanc