round robin load balancing

the session to maintain, the big request header support is not very good, in addition, the default is only Round-robin and Ip-hash two load balancing algorithms.Haproxy is characterized by:1, Haproxy is working on the network 7 layer above.2, can add some of the shortcomings of Nginx such as the session of the maintenance, cookie guidance and other work3, suppor

This is a creation in Article, where the information may have evolved or changed. 1) Introduction The main implementation mechanism for GRPC load balancing is external load balancing, which is to provide the client with an updated list of servers through an external load bal

Today, the ' large server ' model has been replaced by a large number of small servers, using a variety of load balancing techniques. This is a more feasible approach that minimizes the cost of hardware. The advantages of ' more small servers ' outweigh the past ' large server ' patterns in two ways: 1. If the server goes down, the load

. Generally, it can support more than 10 thousand concurrent jobs; 5. Nginx can detect internal server faults through ports, such as processing status codes returned by webpages Based on the server, timeout, and so on, and resubmit the returned error requests to another node, however, the disadvantage is that url detection is not supported; 6. asynchronous processing of requests by Nginx can help node servers reduce load; 7. Nginx supports http and Em

writing our own code to achieve redirection. 2: reverse proxy load balancing implemented by Varnish Another idea is to use the Server Load balancer function of the reverse proxy server. The varnish mentioned in the previous article supports this function and view the configuration file: ? Backend web1 { . Host = "192.168.0.77 "; . Port = "808

bandwidth consumption of single NIC, competitive network adapter and other shortcomings still exist. In addition, some routers (especially Cisco products) do not support the automatic creation of unicast IP addresses and multicast mac ARP mappings, which require manual configuration. IGMP multicast (which can only be selected when multicast is selected), in addition to inheriting the benefits of multicasting, NLB sends an IGMP message every 60 seconds, allowing multicast packets to be sent onl

consumption of single NIC, competitive network adapter and other shortcomings still exist. In addition, some routers (especially Cisco products) do not support the automatic creation of unicast IP addresses and multicast mac ARP mappings, which require manual configuration. IGMP multicast (which can only be selected when multicast is selected), in addition to inheriting the benefits of multicasting, NLB sends an IGMP message every 60 seconds, allowing multicast packets to be sent only to this c

Foreword: Recently in for our products in the high availability, while the environment, while understanding the relevant knowledge, search this blog, good quality, articulate clear, so reproduced to learn. Tags: detailed description of the three operating model of LVS load balancing and 10 scheduling algorithms original works, allow reprint, please be sure to use hyperlinks in the form of the original sourc

the requirements of rapid response. So on top of that, there are some improved versions of the strategy, such as a strategy that calculates only the average time of the last few times.Four. Minimum number of concurrent. The client's request service at the time of the server can be significantly different, with longer working hours, if the use of a simple round robin or random equalization algorithm, the connection process on each server may produce a

The pros and cons of load balancing strategies and their ease of implementation have two key factors:(1) Load Balancing algorithm(2) The detection mode and ability of network system condition1. round robin (Round Robin): Every r

example, the two realservers are both processing 500 connections at the beginning. Before the next request arrives, server1 only disconnects 10 connections, while server2 disconnects 490 servers. However, at this time, it is redirected to server1, server1. The dynamic scheduling mode is used to calculate who should be scheduled for the next connection based on the RS's busy degree feedback (the dynamic feedback load

. Server nodes are scattered in different locations on the Internet and have independent public IP addresses. Generally, the dedicated IP Tunnel communicates with the Server Load balancer. Direct routing: The DR mode adopts a semi-open network structure, which is similar to that of the TUN mode. However, nodes are not scattered across regions, but are located in the same physical network as the scheduler. The server

Basic load balancingAlgorithm, Mainly including the following (refer to F5 products ): Random: The Load Balancing Method Randomly distributes the load to each available server, selects a server through the random number generation algorithm, and sends the connection to it. Although many

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 price is often prohibitive, So

service implementations, we divide load balancing into two types: Client: The client requests a discovery service to get the address (IP, hostname, port). From here, they can choose an address either randomly or round-robin. In order not to extract from the discovery service every time, each client saves some cache, As the discovery service is updated. Cli

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 often prohibitive, So

One of Linux load Balancing software LVS (concept article) A brief introduction of LVSLVS is the short name of Linux virtual server, the Linux VM, a free software project initiated by Dr. Zhangwensong, and its official site is www.linuxvirtualserver.org. Now that LVS is already part of the Linux standard kernel, Before the Linux2.4 kernel, the use of LVS must be recompiled to support the LVS function module

Citrix NetScaler Load Balancing algorithmhttp://blog.51cto.com/caojin/1926308As we all know, Citrix NetScaler, which delivers products as a new generation of applications, has the industry's leading data control, application delivery capabilities, but as one of the fundamental content of ADC capabilities, it is not possible to adapt to so many scenarios without a robust, diversified equalization algorithm I

Balance", where you can choose the load balancing algorithm: Rotation scheduling, random allocation, URL parameters, request first class. If you do not know what these algorithms do, then go to review the previous article. Apr provides us with the following 7 algorithms: Weighted round robin According to the weights according to the request data distrib

1. Concept: Ribbon load Balancing2. Specific contentNow that all the services have been registered through Eureka, then the purpose of using Eureka registration is to want all the services to be unified into the Eureka processing, but now the problem, all the microservices into the Eureka, and the client's call should also pass Eureka completed. This invocation can be implemented using the Ribbon technology.The Ribbon is a component of a service invoc