Click here to close now.

Welcome!

MICROSERVICES Authors: Jason Bloomberg, Roger Strukhoff, Liz McMillan, Elizabeth White, Dana Gardner

Related Topics: Cloud Expo, Java, MICROSERVICES, Linux, Virtualization, Big Data Journal

Cloud Expo: Article

Take Control of Your Schemalessness with Dynamic Schemas

Addressing the inflexibility of structured data by enabling schemaless data to be dynamically and logically structured

Static data structures have been at the heart of data processing tools since the dawn of computing, but they have always limited the flexibility of the organization leveraging the data. Recently, the rise of flexible formats like JSON have led to schemaless data as an attempt to increase agility. However, schemaless data have proven difficult to work with, because of hidden rigid structure in the form of implied schemas.

EnterpriseWeb addresses the problems of both the inflexibility of structured data as well as the impracticality of schemaless data, by enabling schemaless data to be dynamically and logically structured.

From the fixed-length fields of the 1950s, to the relational structures of modern database management systems, to the semistructured data formats XML and JSON, the structure of our data has always informed code about how it should be processed. Data are defined by their relationships, and we used to hard-code those relationships into rigid structures. That approach allows only one static view, which is difficult to work with, and even more difficult to change. Nevertheless, such rigid data structures - and the models that represent them - are an integral part of enterprise information management.

Traditional relational database management systems (RDBMSs) exemplify this point with their static entity-relationship models (ERMs) and tightly interconnected data structures. XML improves this situation slightly, allowing semi-structured information, but schemas still constrain flexibility and performance. With both approaches, fixed definitions, views, and reports limit the ability for businesses to freely transform information into insight and become obstacles to systemwide change.

The Rise of Schemalessness
This challenge of inflexible data structures has given rise to schemaless data. With JSON in particular, we can create whatever data structure we like when we author data. We don't have to shoehorn data into rigid data structures, thus allowing every record to have its own structure.

But there is a problem with schemaless data. Consider this simple task: how do you create a query for all the addresses in a particular Zip Code if every record has a different name or format for Zip Code? Schemalessness, after all, isn't magic - even schemaless data require some kind of metadata so the code will know how to process such information, what software development guru Martin Fowler calls an implied schema.

Implied schemas represent the structure inherent in any data record. If each address record has its own format, then that format provides the implied schema for that record. Dealing with implied schemas thus falls to the developer, who must figure out how to code software to process these implied schemas, which are different for each and every record.

In Fowler's tutorial on schemalessness, he explains the pros and cons of implied schemas. Despite acknowledging the power of schemalessness to support more flexible and responsive user experiences, he recommends avoiding it and implied schemas for developer convenience. Good advice with respect to traditional software, but the world of data is changing. Today we live in an increasingly schemaless world, where more often than not, the structure of our data is fluid or nonexistent.

Raising the Discussion to Dynamic Schemas
Fowler makes it clear that in the past it has been impractical from the developer's perspective to work systematically with schemaless data, because implied schemas are difficult to deal with. After all, structure is itself useful, and isn't the problem per se. Rather, how to avoid the limitations of static structure without falling into the trap of unmanageable schemaless data that is the real challenge.

EnterpriseWeb's unique approach to modeling solves this critically important challenge by leveraging dynamic schemas that have flexible, metadata-driven relationships with underlying information. Using metadata this way separates concerns, letting people consider relationships from multiple perspectives, rather than from a single static point of view. In addition, it's now possible to change and extend metadata to meet diverse business needs without disruption.

Instead of settling for complex ERMs with their inflexible, tightly coupled data structures or dealing with the coding complexities of implied schemas, developers can project dynamic schemas from the metadata simply by writing different transformations. As a result, dynamic schemas are developer friendly and dynamic - a welcome change from the difficult problem of schemalessness.

Add an Agent for Performance
So far so good, but how do we build software to process all such data in a general way, freeing ourselves from custom coding for implicit schemas? The solution is an intelligent agent.

EnterpriseWeb's intelligent agent, SmartAlex™, is a distributable transaction manager that resolves dynamic schemas for each interaction. Every human or system client interaction is a request for SmartAlex to interpret dynamic schemas (as well as other models and additional metadata) and translate them to a context-specific set of resources in order to construct a custom response.

This Agent-Oriented approach maximizes performance for such dynamic computing. In the background, SmartAlex handles all run time connection and transformation details, sparing programmers from manually integrating resources for varied and unanticipated uses, greatly improving IT productivity while enabling business agility.

SmartAlex logs all system events, indexes all new and updated resources, and tags all changes in relationships for detailed and navigable audit history. This practice creates a feedback loop as SmartAlex leverages the same indexed logs to guide its execution. Data, code, and user interface components, as well as connectors for federated services, systems, databases, and devices, can be updated or replaced without breaking related apps and processes - as SmartAlex is ‘aware' of the changes. In this way EnterpriseWeb supports real time exception and change management for resilient solutions that can evolve naturally.

The EnterpriseWeb Take
Schemalessness was a reaction to the limitations of structured data. People struggled with the constraints of static structure, and figured that if they simply got rid of structure, then the problem would go away. But this move was merely a shell game, as the limitations of fixed schemas shifted to implied schemas, now without the benefits of structure to inform the code responsible for their processing.

The solution is to raise the level of abstraction, and instead of arguing over fixed vs. implied schemas, to work at the dynamic schema level. Such an approach is model-driven, allowing application designers to build models that capture their data structures, and allowing an intelligent agent to use the metadata each model represents to meet the specific needs of each interaction. The real lesson here is that the solution to resolving the challenge of schemalessness combines both dynamic schemas and the action of the agent. Stay tuned to my next newsletter for more information.

More Stories By Jason Bloomberg

Jason Bloomberg is the leading expert on architecting agility for the enterprise. As president of Intellyx, Mr. Bloomberg brings his years of thought leadership in the areas of Cloud Computing, Enterprise Architecture, and Service-Oriented Architecture to a global clientele of business executives, architects, software vendors, and Cloud service providers looking to achieve technology-enabled business agility across their organizations and for their customers. His latest book, The Agile Architecture Revolution (John Wiley & Sons, 2013), sets the stage for Mr. Bloomberg’s groundbreaking Agile Architecture vision.

Mr. Bloomberg is perhaps best known for his twelve years at ZapThink, where he created and delivered the Licensed ZapThink Architect (LZA) SOA course and associated credential, certifying over 1,700 professionals worldwide. He is one of the original Managing Partners of ZapThink LLC, the leading SOA advisory and analysis firm, which was acquired by Dovel Technologies in 2011. He now runs the successor to the LZA program, the Bloomberg Agile Architecture Course, around the world.

Mr. Bloomberg is a frequent conference speaker and prolific writer. He has published over 500 articles, spoken at over 300 conferences, Webinars, and other events, and has been quoted in the press over 1,400 times as the leading expert on agile approaches to architecture in the enterprise.

Mr. Bloomberg’s previous book, Service Orient or Be Doomed! How Service Orientation Will Change Your Business (John Wiley & Sons, 2006, coauthored with Ron Schmelzer), is recognized as the leading business book on Service Orientation. He also co-authored the books XML and Web Services Unleashed (SAMS Publishing, 2002), and Web Page Scripting Techniques (Hayden Books, 1996).

Prior to ZapThink, Mr. Bloomberg built a diverse background in eBusiness technology management and industry analysis, including serving as a senior analyst in IDC’s eBusiness Advisory group, as well as holding eBusiness management positions at USWeb/CKS (later marchFIRST) and WaveBend Solutions (now Hitachi Consulting).

@MicroservicesExpo Stories
Our guest on the podcast this week is Jason Bloomberg, President at Intellyx. When we build services we want them to be lightweight, stateless and scalable while doing one thing really well. In today’s cloud world, we’re revisiting what to takes to make a good service in the first place.microservices Listen in to learn why following “the book” doesn’t necessarily mean that you’re solving key business problems.
The Open Compute Project is a collective effort by Facebook and a number of players in the datacenter industry to bring lessons learned from the social media giant's giant IT deployment to the rest of the world. Datacenters account for 3% of global electricity consumption – about the same as all of Switzerland or the Czech Republic -- according to people I met at the recent Open Compute Summit in San Jose. With increasing mobility at the edge of the cloud and vast new dataflows being pre...
Even though it’s now Microservices Journal, long-time fans of SOA World Magazine can take comfort in the fact that the URL – soa.sys-con.com – remains unchanged. And that’s no mistake, as microservices are really nothing more than a new and improved take on the Service-Oriented Architecture (SOA) best practices we struggled to hammer out over the last decade. Skeptics, however, might say that this change is nothing more than an exercise in buzzword-hopping. SOA is passé, and now that people are ...
SYS-CON Events announced today that Cisco, the worldwide leader in IT that transforms how people connect, communicate and collaborate, has been named “Gold Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Cisco makes amazing things happen by connecting the unconnected. Cisco has shaped the future of the Internet by becoming the worldwide leader in transforming how people connect, communicate and collaborat...
Exelon Corporation employs technology and process improvements to optimize their IT operations, manage a merger and acquisition transition, and to bring outsourced IT operations back in-house. To learn more about how this leading energy provider in the US, with a family of companies having $23.5 billion in annual revenue, accomplishes these goals we're joined by Jason Thomas, Manager of Service, Asset and Release Management at Exelon. The discussion is moderated by me, Dana Gardner, Principal A...
In today's digital world, change is the one constant. Disruptive innovations like cloud, mobility, social media, and the Internet of Things have reshaped the market and set new standards in customer expectations. To remain competitive, businesses must tap the potential of emerging technologies and markets through the rapid release of new products and services. However, the rigid and siloed structures of traditional IT platforms and processes are slowing them down – resulting in lengthy delivery ...
SYS-CON Events announced today that MangoApps will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY., and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. MangoApps provides private all-in-one social intranets allowing workers to securely collaborate from anywhere in the world and from any device. Social, mobile, and eas...
SYS-CON Events announced today that Solgenia will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Solgenia is the global market leader in Cloud Collaboration and Cloud Infrastructure software solutions. Designed to “Bridge the Gap” between Personal and Professional S...
SYS-CON Events announced today that Akana, formerly SOA Software, has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. Akana’s comprehensive suite of API Management, API Security, Integrated SOA Governance, and Cloud Integration solutions helps businesses accelerate digital transformation by securely extending their reach across multiple channels – mobile, cloud and Internet of Thi...
SYS-CON Media announced today that @ThingsExpo Blog launched with 7,788 original stories. @ThingsExpo Blog offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. @ThingsExpo Blog can be bookmarked. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago.
SYS-CON Events announced today Sematext Group, Inc., a Brooklyn-based Performance Monitoring and Log Management solution provider, will exhibit at SYS-CON's DevOps Summit 2015 New York, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Sematext is a globally distributed organization that builds innovative Cloud and On Premises solutions for performance monitoring, alerting and anomaly detection (SPM), log management and analytics (Logsene), search analytics (S...
In the midst of the widespread popularity and adoption of cloud computing, it seems like everything is being offered “as a Service” these days: Infrastructure? Check. Platform? You bet. Software? Absolutely. Toaster? It’s only a matter of time. With service providers positioning vastly differing offerings under a generic “cloud” umbrella, it’s all too easy to get confused about what’s actually being offered. In his session at 16th Cloud Expo, Kevin Hazard, Director of Digital Content for SoftL...
When it comes to microservices there are myths and uncertainty about the journey ahead. Deploying a “Hello World” app on Docker is a long way from making microservices work in real enterprises with large applications, complex environments and existing organizational structures. February 19, 2015 10:00am PT / 1:00pm ET → 45 Minutes Join our four experts: Special host Gene Kim, Gary Gruver, Randy Shoup and XebiaLabs’ Andrew Phillips as they explore the realities of microservices in today’s IT worl...
The world's leading Cloud event, Cloud Expo has launched Microservices Journal on the SYS-CON.com portal, featuring over 19,000 original articles, news stories, features, and blog entries. DevOps Journal is focused on this critical enterprise IT topic in the world of cloud computing. Microservices Journal offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. Follow new article posts on T...
SYS-CON Events announced today that Site24x7, the cloud infrastructure monitoring service, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Site24x7 is a cloud infrastructure monitoring service that helps monitor the uptime and performance of websites, online applications, servers, mobile websites and custom APIs. The monitoring is done from 50+ locations across the world and from various wireless carr...
For those of us that have been practicing SOA for over a decade, it's surprising that there's so much interest in microservices. In fairness microservices don't look like the vendor play that was early SOA in the early noughties. But experienced SOA practitioners everywhere will be wondering if microservices is actually a good thing. You see microservices is basically an SOA pattern that inherits all the well-known SOA principles and adds characteristics that address the use of SOA for distribut...
Microservice architectures are the new hotness, even though they aren't really all that different (in principle) from the paradigm described by SOA (which is dead, or not dead, depending on whom you ask). One of the things this decompositional approach to application architecture does is encourage developers and operations (some might even say DevOps) to re-evaluate scaling strategies. In particular, the notion is forwarded that an application should be built to scale and then infrastructure sho...
Microservices are the result of decomposing applications. That may sound a lot like SOA, but SOA was based on an object-oriented (noun) premise; that is, services were built around an object - like a customer - with all the necessary operations (functions) that go along with it. SOA was also founded on a variety of standards (most of them coming out of OASIS) like SOAP, WSDL, XML and UDDI. Microservices have no standards (at least none deriving from a standards body or organization) and can be b...
Our guest on the podcast this week is Jason Bloomberg, President at Intellyx. When we build services we want them to be lightweight, stateless and scalable while doing one thing really well. In today's cloud world, we're revisiting what to takes to make a good service in the first place. Listen in to learn why following "the book" doesn't necessarily mean that you're solving key business problems.
Right off the bat, Newman advises that we should "think of microservices as a specific approach for SOA in the same way that XP or Scrum are specific approaches for Agile Software development". These analogies are very interesting because my expectation was that microservices is a pattern. So I might infer that microservices is a set of process techniques as opposed to an architectural approach. Yet in the book, Newman clearly includes some elements of concept model and architecture as well as p...