Using Scala to Drive Modernization in Enterprise Environments

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We’ll take care of it. Personally! Using Scala to Drive Modernization Scala 2014  July 28th, Uppsala, Sweden   Martin Schmidt, innoQ Switzerland

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We’ll take care of it. Personally! Using Scala to Drive Modernization in Enterprise Environments

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© 2011 innoQ Deutschland GmbH Architecture Drivers AUTOMATIZATION (STRAIGHT THROUGH PROCESSING) ! BUSINESS PROCESS OUTSOURCING MANUAL TASK OUTSOURCING ! BUSINESS SERVICE PROVIDING ! LOW TCO ! SHORT TIME TO MARKET

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© 2011 innoQ Deutschland GmbH Drivers for choosing a programming environment Costs! Time to market Quality Human Resources Licenses • Fewer bugs => higher quality • Higher developer productivity => shorter time to market – Faster development of new features – Easier integration of changes – DSL-based development (more idiomatic/precise, bridges the gap) • Quick ramp-up of new resources => reduced HR cost, shorter time to market • Portable platform => higher quality, shorter time to market • No vendor lock-in => optimize license cost

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© 2011 innoQ Deutschland GmbH Why Scala? • Because it … – Helps increasing code Quality – Provides the means to achieve shorter time to market – Can be used to allow a quick ramp-up for new employers and as such decrease Human Resources costs – No vendor lock-in => optimize License costs

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© 2011 innoQ Deutschland GmbH Scala features supporting these drivers • Rich type system  (e.g. traits, co-variants, self types, Try/Option, pattern matching) ! ⇒Less errors => higher Quality ! • More expressive code  (e.g. through type inference, concise syntax, compile time reflection for code generation, internal DSL) ! ⇒Improve understandability of code => higher Quality, reduced Human Resources costs ! ⇒Less code to write => higher Quality, shorter Time-to- Market

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© 2011 innoQ Deutschland GmbH Scala features supporting these drivers • Macro annotations / parser/generator ⇒ Improved Expressiveness through DSLs ! • Functional idioms  (e.g. high order functions, monads, for-comprehension) ⇒Focus on “what to do” and not “how to do it” ! ⇒ higher Quality, shorter Time-to-Market

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© 2011 innoQ Deutschland GmbH Potential risks when selecting Scala • Availability of skilled resources – Focused training and on-boarding process for new employees (they need to be trained anyway) ⇒Mitigation: Separate framework and business logic (reduce perceived complexity) ! • Scala is not yet as established as other languages (e.g. Java/C#/…) – But looks very promising (*) ⇒ It is JVM- and open-source-based (*) http://typesafe.com/company/casestudies