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Due to an increase in demand for legacy load balancing appliances that can accommodate more complex application delivery needs and enhance application performance, Hillstone keeps working hard on enhancing ADCs. The most recent release — ADC V3.1 — demonstrates Hillstone’s commitment to matching customer needs.

Highlights of ADC V3.1

Enhancement for load balancing

Link load balancing (LLB) is intended to manage traffic over ISP or WAN links. It allows users to set up multiple links, lowering the possibility of outages and providing more capacity to ease traffic congestion.

The purpose of server load balancing (SLB) is to provide users with adaptable choices for enhancing the performance of the backend servers.

ADC V3.1 provides more LLB mechanisms and increases application delivery efficiency by detecting links based on any domain name and destination IP. Moreover, it incorporates URL hashes into SLB algorithms.

Support more algorithms on DNS proxy

DNS proxy serves as both a DNS server and a liaison between clients and servers, answering queries based on its DNS cache or rerouting them to other DNS servers.

In addition to Round Robin, the new release supports more DNS proxy algorithms such as Weighted Round Robin, Least-Connection Scheduling, Weighted Least-Connection Scheduling, among others, to boost application performance by reducing the amount of time it takes for DNS to respond.

Support multiple certificates on a virtual server

In general, users desire a virtual server that can support the maximum number of real servers. A low virtual-server-to-real-server ratio may impede the design and architecture of some applications, or waste the virtual server resources.

By managing multiple certificates of HTTPS applications based on the domain name on a virtual server, ADC V3.1 simplifies the hosting of organizing multiple HTTPS applications and enables efficient use of the HTTPS virtual servers.

Set-cookie encryption and decryption

A cookie is a piece of ASCII text that a webserver sends to a user’s browser to allow the webserver to track clients through multiple HTTP requests. Only the clients can set cookies. If the server wants a client to add a cookie item, it needs to send the cookie item to the client by using Set-cookie in the HTTP header when responding.

With the Set-cookie encryption and decryption function, ADC V3.1 can better protect the sensitive and private data of users, rather than exposing them to the risks of cookie leakage.

Optimization for monitoring

For link load balancing, server load balancing, and global server load balancing, ADC V3.1 supports full-screen dashboards. Dashboards provide access to detailed information, enabling users to monitor and analyze the load-balancing situation as a whole.

The health check monitoring can detect and reject abnormally functioning servers, and those servers will be excluded from the server list to guarantee that client requests are routed to services that are functioning properly. The history of all health checks is displayed as logs. In the new release, the health check logs can be sent by SMTP and SMS, which improves the efficiency of operations and management through real-time notification.

To learn more about ADC V3.1, please contact your Hillstone representative or authorized resellers.

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