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Why Your Project May Not Be Ready for Microservices By @MeHeller | @DevOpsSummit #Microservices

What does “big enough” mean? It’s sometimes useful to argue by reductio ad absurdum

Why Your Project May Not Be Ready for Microservices
By Martin Heller

What does “big enough” mean? It’s sometimes useful to argue by reductio ad absurdum. Hello, world doesn’t need to be broken down into smaller services. At the other extreme, building a monolithic enterprise resource planning (ERP) system is just asking for trouble: it’s too big, and it needs to be decomposed.

Is-your-project-suitable-for-microservicesFind a balance

Where’s the middle ground? It depends. You want fine-grained units of execution that do one thing really well, according to Jason Bloomberg, and he cites one of Sam Newman’s rules of thumb for the meaning of “fine-grained, “cited in his book, Building Microservices: Designing Fine-Grained Systems—small enough to be managed by a single team.

Bloomberg also suggests looking at services through parsimony. If a service looks cohesive and deals only with a single concern, then it’s probably small enough. If, on the other hand, you look at a service interface and see a number of different concerns being combined, perhaps it’s a candidate for further decomposition. At the other end of the spectrum, if the service doesn’t do enough to feel useful, perhaps you overdid the decomposition and need to combine it with a related service. It’s very much like the game of “find the objects” that people played when designing object-oriented software 25 years ago, but now the objects are services, not classes.

Read the entire article at http://techbeacon.com/why-your-project-may-not-be-ready-microservices.

Read the original blog entry...

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).

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