Welcome!

Linux Containers Authors: Zakia Bouachraoui, Yeshim Deniz, Elizabeth White, Liz McMillan, Pat Romanski

Related Topics: @DevOpsSummit, Java IoT, Microservices Expo, Linux Containers, Containers Expo Blog, @CloudExpo

@DevOpsSummit: Article

Microservices and Legacy Apps | @DevOpsSummit #DevOps #Microservices

Microservices architecture enable lots of benefits. But, often people are confused as to where to start.

Microservices architecture enables flexible architecture and speeds up your development process. But, often people are confused as to where to start.  The obvious choice is to use a microservice architecture for all new applications. However, you have a ton of time and money invested in legacy applications. Applications that handle your user authentication and access to your company's core products and services should be rewritten.  You should definitely leverage those legacy applications to get to microservices faster.  And, you can do it without changing your existing Database Schema.

Understand that you have a three-tier application already. The microservice portion is just a different view.  Instead of a pretty HTML page, the microservice user will see a JSON document behind a RESTful API.

Furthermore, since you are only changing the view portion of your application, your business logic and data model will not change.  That is outstanding news as those parts are rather tricky and can be brittle as your application ages.

So, in this use case, you can imagine we are taking a user authentication application and creating a microservice version of it.  Other platforms would then use this microservice for authentication.Perhaps we can authenticate mobile users this way, or we will offer authentication services to third parties in much the same way that Google and Facebook do with their accounts.

Sometimes, you will want to create a new microservice that has no previous application like it. For example, imagine a microservice that will embed some of your customers' data in another webpage like YouTube offers with their videos.  For that, you might need to not only create a new view but also a controller.  What you should avoid doing is creating a new data model; that means use the Database Schema you have today!  Leverage your existing Database Schema using a new VIEW in your database (Note: this is not View as in Model-View-Controller; this is the Database object).

The point is to limit the amount of work you must do to accomplish your task.  Think "Minimally Viable Product."  One of the biggest temptations in adopting new technology is to want to use it independently of legacy applications that use older technologies.  That reminds me of bands that dislike playing their bigger hits (looking at you, Oasis) and prefer to either skip them or pay lip service to them.  Remember: those applications are "legacy" applications for a reason.  They have stood the test of time and they work.  As you begin to experiment with new technologies and architectures, strive to use the legacy applications' success to your advantage.

To see how Datical is helping organizations modernize their legacy applications watch this on-demand webinar - DevOps at GE Transportation: Reinventing Legacy Applications to Respond to a Fast Pace World

More Stories By Robert Reeves

Robert Reeves is President and Co-founder of Datical. Previously, as Datical’s Chief Technical Officer, Robert Reeves advocated for customers and provided technical architecture leadership. Prior to co-founding Datical, Robert was a Director at the Austin Technology Incubator. At ATI, he provided real world entrepreneurial expertise to ATI member companies to aid in market validation, product development and fundraising efforts. Robert cofounded Phurnace Software in 2005. He invented and created the flagship product, Phurnace Deliver, which provides middleware infrastructure management to multiple Fortune 500 companies. As Chief Technology Officer, he led technical evangelism efforts, product vision and large account technical sales efforts. After BMC Software acquired Phurnace in 2009, Robert served as Chief Architect and lead worldwide technical evangelism.

IoT & Smart Cities Stories
The challenges of aggregating data from consumer-oriented devices, such as wearable technologies and smart thermostats, are fairly well-understood. However, there are a new set of challenges for IoT devices that generate megabytes or gigabytes of data per second. Certainly, the infrastructure will have to change, as those volumes of data will likely overwhelm the available bandwidth for aggregating the data into a central repository. Ochandarena discusses a whole new way to think about your next...
DXWorldEXPO LLC announced today that Big Data Federation to Exhibit at the 22nd International CloudEXPO, colocated with DevOpsSUMMIT and DXWorldEXPO, November 12-13, 2018 in New York City. Big Data Federation, Inc. develops and applies artificial intelligence to predict financial and economic events that matter. The company uncovers patterns and precise drivers of performance and outcomes with the aid of machine-learning algorithms, big data, and fundamental analysis. Their products are deployed...
Dynatrace is an application performance management software company with products for the information technology departments and digital business owners of medium and large businesses. Building the Future of Monitoring with Artificial Intelligence. Today we can collect lots and lots of performance data. We build beautiful dashboards and even have fancy query languages to access and transform the data. Still performance data is a secret language only a couple of people understand. The more busine...
All in Mobile is a place where we continually maximize their impact by fostering understanding, empathy, insights, creativity and joy. They believe that a truly useful and desirable mobile app doesn't need the brightest idea or the most advanced technology. A great product begins with understanding people. It's easy to think that customers will love your app, but can you justify it? They make sure your final app is something that users truly want and need. The only way to do this is by ...
CloudEXPO | DevOpsSUMMIT | DXWorldEXPO are the world's most influential, independent events where Cloud Computing was coined and where technology buyers and vendors meet to experience and discuss the big picture of Digital Transformation and all of the strategies, tactics, and tools they need to realize their goals. Sponsors of DXWorldEXPO | CloudEXPO benefit from unmatched branding, profile building and lead generation opportunities.
Digital Transformation and Disruption, Amazon Style - What You Can Learn. Chris Kocher is a co-founder of Grey Heron, a management and strategic marketing consulting firm. He has 25+ years in both strategic and hands-on operating experience helping executives and investors build revenues and shareholder value. He has consulted with over 130 companies on innovating with new business models, product strategies and monetization. Chris has held management positions at HP and Symantec in addition to ...
Cell networks have the advantage of long-range communications, reaching an estimated 90% of the world. But cell networks such as 2G, 3G and LTE consume lots of power and were designed for connecting people. They are not optimized for low- or battery-powered devices or for IoT applications with infrequently transmitted data. Cell IoT modules that support narrow-band IoT and 4G cell networks will enable cell connectivity, device management, and app enablement for low-power wide-area network IoT. B...
The hierarchical architecture that distributes "compute" within the network specially at the edge can enable new services by harnessing emerging technologies. But Edge-Compute comes at increased cost that needs to be managed and potentially augmented by creative architecture solutions as there will always a catching-up with the capacity demands. Processing power in smartphones has enhanced YoY and there is increasingly spare compute capacity that can be potentially pooled. Uber has successfully ...
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
When talking IoT we often focus on the devices, the sensors, the hardware itself. The new smart appliances, the new smart or self-driving cars (which are amalgamations of many ‘things'). When we are looking at the world of IoT, we should take a step back, look at the big picture. What value are these devices providing. IoT is not about the devices, its about the data consumed and generated. The devices are tools, mechanisms, conduits. This paper discusses the considerations when dealing with the...