Last week we had an introductory technical meeting with Kemp Technologies and it was amazing to see such a great solution which I’m sure will grow a lot in the future. So, within this article I will try to speak about ADC and one of Kemp Technologies solutions: LoadMaster.
The first question: what is ADC?
ADC (Application Delivery controller) is the next generation of loadbalancers and it is typically located between the firewall/router and the web server farm. An application delivery controller is a network device that helps sites direct user traffic to remove excess load from two or more servers. In addition to providing Layer 4 load balancing, ADCs can manage Layer 7 for content switching, and also provide SSL offload and acceleration. They tend to offer more advanced features such as content redirection as well as server health monitoring. An Application delivery controller may also be known as a Web switch, URL switch, Web content switch, content switch and Layer 7 switch.
I would recommend you to watch this video to get the answer for article question and some other answers about:
– What is a LoadBalancer?
– How does loadbalancing work?
– What are loadbalancing algorithms?
– What is an Application Delivery Controller?
– How do I provide scalability?
– What can I do to optimize my applications?
– How do we provide High Availability?
One of the solution that was presented in the meeting was KEMP Technologies LoadMaster™, which is an advanced L4-7 content switching application delivery controller that enables high availability of applications, SSL offload, content switching and intelligent global traffic distribution to direct client requests to the best endpoint across cloud boundaries based on proximity or pre-defined business logic.
How It Works
Connections are made by clients to LoadMaster to start communication using a variety of protocols. LoadMaster uses its L7 visibility to parse the flows on a per message basis and ensure even distribution across the cluster of available nodes, even when members are removed or added. LoadMaster executes health checks against the nodes to ensure that only healthy nodes are used as targets for messages. If a node becomes unhealthy and starts to fail health checks, it is automatically removed and re-added only when it returns to a healthy state.
Finally I recommend all of you to download the trial version of virtual loadbalancer from this link and get it tested.
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