Smooth Delivery of Enterprise Applications

By CIOReview | Thursday, August 18, 2016

Be it in cloud or enterprise data center, users need to be constantly connected with applications. In the modern tech environment, the rapid surge in the number of devices has elevated the level of network traffic across the globe, which often affects application delivery. Today, enterprises are looking for highly responsive and performance-centric solutions equipped with a top notch load balancing capability for smooth delivery of enterprise applications. Deploying Application Delivery Controllers (ADC) that serves as an integral part of an Application Delivery Network (ADN) helps enterprises eliminate load from web servers, easing the delivery of applications.

Significance of Response Time

Users across the globe often need to access their valuable data on business apps anytime, anywhere, and on any device. Customers are constantly trying to interact with companies round the clock with the help of e-commerce platforms on their websites. To cater this ever growing necessity, IT departments are focused on facilitating apps on the internet. But, as the performance of web- enabled apps directly depend on the response time, a slight lag can make the customers get frustrated. Frustrated customers can pave a path for resource wastage, revenue loss, and a negative reputation for the organization and IT team. In this manner, a decline in performance can shatter all the efforts aimed to deliver applications.

Recognizing the Delay Points

When an application or web content is delivered over the Internet, it proceeds through a series of points that causes delays depending on the network load and performance. Following are the two main delay points:

• At the source of content that are used for Web page generation and back-end processing.
• While sending a page of information to an end user via a DSL, ISP, T1, or a dial-up connection.

The following steps can help you administer a high-speed application delivery:

Adopt the Magic Solution: Application Delivery Controllers

Aiming to break new grounds in application delivery, enterprises are trying to adopt and implement ADCs in their existing network infrastructure. It is an advanced load balancer that inhabits in the application servers and directs client requests to your servers, boosting performance and utilization of capacity. Further, an ADC sends requests only to online application servers and ensures that the clients don’t receive errors due to faults in the server.

Software or Hardware Based ADC?

Software solutions that can be easily implemented are often more flexible and less expensive. Whereas, hardware solutions are expensive and come along with their specifically designed softwares. Organizations also have the option of installing ADCs in cloud environments. So, considering their business-centric requirements, enterprises should be able to choose a suitable form of ADC.

Understand the Key Features of ADCs

The current era of ADCs portrays a wide range of functionalities that stays on top of the traditionally implemented server load balancing platforms. It focuses on various technical aspects such as:

Layer 3/4 & Layer 7 Load Balancing and Distribution:

Most of the modern ADC platforms will be effectively integrated with Layer 3/4 and Layer 7 load balancing capabilities. Layer 3/4 deals with the aspect of distributing traffic based on the TCP/UDP port numbers, IP/IPv6 addresses and/or subnets, protocols, and information on SSL/UDP/ TCP sessions. Whereas, Layer 7 handles the feature of content load balancing and distributes the traffic based on URL, URL wildcard, URL Query, Domain, Payload values and HTTP header fields.

Web Application Firewall (WAF)

A built-in Web Application Firewall (WAF) is a vital feature that fortifies an ADC’s overall infrastructure. It helps to prevent the most organized and ruinous web attacks such as SQL injection, Cross-site scripting (XSS), cookie poisoning and the exposure of sensitive data.

Load Balancing Techniques

An ideal ADC solution comes with wide array of advanced as well as traditional load balancing methods that can be implemented, responding to the connection requests. Some of the commonly used methods are: Round Robin, Hashing (URL, Source and/or Destination IP address, Domain), Least Bandwidth, Least Packets, Least Connections, Application acceleration, Global server load balancing and Response Time.

High Availability

While considering a highly functional ADC solution, never ignore the feature of High Availability (HA). To master the art of perfection and to deliver a top-notch performance, ADC solutions with high availability always utilize some type of clustering techniques. In case of a failure, the feature effectively groups multiple devices together and configures them to function in a collaborative manner.

In order to trigger faster application delivery, your organization always requires a new generation and constantly updated ADC platform. Offering innovative solutions, an efficient ADC vendor should be able to stage a standardized environment that facilitates on-demand services and effectively automates crucial operations right from the stage of initial planning to implementation. Furthermore, you must gain extensive expertise on the latest tools and processes, and integration of them within your organization’s existing IT infrastructure.