Whether the application is in the cloud or a local data center, load balancing can direct and optimize network traffic through computer devices such as servers, network segments, and storage. Load balancing can improve application performance, optimize resource usage, and scale applications horizontally while maintaining their original flexibility.
Regardless of whether it is a software or a hardware load balancer, its main purpose is to receive incoming traffic requests based on scheduling or other algorithms, and distribute them either in a balanced or unbalanced manner to a server cluster. For example, server load balancing distributes traffic through the four mission-critical application instances of a computer cluster. When a node in a computer cluster fails or needs maintenance services, the load balancer automatically balances the traffic and moves to the remaining three other nodes.
Server load balancer notable features <br> <br> server load balancer core functionality including basic load balancing, content conversion, traffic management. For example, a load balancer can direct Layer 2 to Layer 4 network traffic using MAC addresses, IP addresses, and TCP port information.
Load balancers should have network compatibility and be able to integrate into any data center. We need a load balancer that satisfies multiple routing protocols (for example, Border Gateway Protocol and Open Shortest Path First), as well as common network technologies such as IEEE802.3ad link aggregation and IEEE802.1q VLAN tags. . Using advanced information technologies such as HTTP headers and SSL session identifiers, the server load balancer can also direct L7 network layer traffic.
Advanced load balancers are available worldwide and can balance and direct data traffic between different data center sites. Remote users improve performance by interrupting websites by sending request information to the nearest data center. Many load balancers can also have the function of session persistence. They can send subsequent request information to the same server to ensure the integrity of the user session.
With the maturity of health monitoring systems and management integration, companies are paying more and more attention to automated infrastructure management. The health monitoring system of the server load balancer can view some infrastructures, such as network connections, hardware, operating system services, and even applications, as well as adjust the flow distribution to avoid bottlenecks or component failures.
With features such as the Secure Sockets Layer (SSL) virtual private network, the server load balancer enhances security protection and allows fine-grained control over the specific applications that users access.
Server load balancers contain a variety of techniques for accelerating applications. With the server load balancer caching system, users can retrieve frequently accessed content within the load balancer rather than at the server node. This method can improve the server-side response speed and reduce the server cluster load. Compression reduces data transmission between networks. As applications become more complex and require more rich content, such as streaming media, the compression of server load balancers can improve the responsiveness of applications within the server. The TCP optimization method reduces application redundancy. This also reduces run-time delays. Through offloading, TCP and SSL activity can be transferred to the load balancer rather than relying solely on back-end servers.
Finally, we must consider the scalability of the load balancing system. Any resilient, high-availability cluster cannot rely on just one load balancer. Server load balancers should support redundant deployments. When the demand for clusters or traffic increases, the load balancer can also be expanded.
Server load balancer management features <br> <br> Today, server load balancer with a set of basic, important management features. IT managers can easily configure the balancer parameters from a central portal or other web application. They can also create management policies, monitor real-time traffic statistics such as network requirements and connection information, and assess balancer access traffic.
The management function should include the load log tool. Enter log tracking management activities, review logs record all transaction information, system logs handle balancer status, and all differences. Meter information can show system load, past log storage capacity, high availability status, and other performance. Alarms and notifications can alert administrators of concerns about important events. Simple network management protocol traps can monitor specified events, such as failed server components.
Choose a server load balancer that can integrate with existing management platforms such as data center infrastructure management tools.
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