multi wan load balancing

A mention of load balancing, I believe many students will directly think of nginx reverse proxy, because we are usually more familiar with Nginx to do Web services load balancing. In fact, Nginx is only part of the load balancer, and each level in the Web application actuall

server can be a Web server, a mail server, an FTP server , a DNS server, one or more of the video servers, and each real server is connected through a high-speed LAN or across a WAN. In a real-world application, Director server can also be the role of real server concurrently. As can be seen from the entire LVS structure, director server is the core of the entire LVS, currently, the operating system for director server can only be Linux and FreeBSD,

rapid expansion of deployment scale, front-end load balancing is also beginning to become rich.Soft loadAfter entering the Internet company, when we first started to develop the application, the business scale small user quantity is not big, the machine quantity also is few (In front of a LVS followed by several application services, and later in order to facilitate the division by the domain name and suit

(This article applies to TL-ER6120 V1.0, TL-ER5120 V1.0, TL-ER5520G V1.0, TL-R483 V3.0, TL-R478 + V5.0, TL-WVR300 V1.0)Some application environments, such as enterprises or schools, have their own internal network and need to access the Internet. Multiple WAN port routers are selected to connect both the internal network and the Internet. If no corresponding settings are made, the data accessing the internal network may be sent to the Internet. Simila

Recently in the learning database of read-write separation and master-slave replication, the use of a master multi-slave strategy, using polling method, read the contents from the database. However, if a certain station from the database down, and the client does not know, each round to choose this from the database, do not have to error? Online access to the information, found a good blog post, not only the solution, but also detailed about the datab

Understanding Server Load balancer firstTransferAndForwardingDifferences: The transfer and forwarding process is similar to whether customers and outsourcing companies need to directly contact each other. If the contact is received by the receiver. Transparency between customers and outsourcing companies means forwarding.Transfer: to transfer data packets from the client to the actual server, you need to know the address of the actual server.Forward:

Good blog is generally able to do "look at the title of the text," to see the next heading to know what to say below, to write this title hesitated, would have to be the title of the Apache+tomcat to achieve load balance, but also think it seems more fuzzy. After thinking about it, I think that using Apache to do load balancing the bottom of the combination is th

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