Merge pull request #20 from AOEpeople/radar-2021-01-01-angular

Radar 2021 01 01 angular

radar/2021-01-01/angular.md

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+---
+title:      "Angular"
+ring:       adopt 
+quadrant:   languages-and-frameworks
+
+---
+Actually in version 11 Angular has become an adult SPA framework with much faster build time and significant smaller
+production builds. Updating to newer versions has become mostly a "no-brainer" which helps us to integrate latest
+community bug-fix & improvements on a friday during a cup of coffee. Angular ships as a fully integrated development
+platform from scaffolding, code generation, routing, guarding, unit/e2e-testing, multi language builds (i18n) and stable
+dev/build processes and keeping it extensible at the same time. This "ganzheitlichkeit" makes Angular in the beginning
+way more difficult to learn but once understood it's a great candidate to go very fast into "requirement implementation"
+aka early providing value rather than library wiring. Beside the existing telco-industry projects we've actually also
+chosen Angular for resource critical industry 4.0 / embedded projects. Here we've selected Angular beside the
+performance aspects to fulfill requirements like adaptive multi device support (custom hardware buttons, tablets and
+laptops) on the one hand and on the other hand to reduce the risk loosing time by having too many self-managed external
+dependencies.

radar/2021-01-01/rxjs.md

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+---
+title:      "RxJs"
+ring:       adopt
+quadrant:   languages-and-frameworks
+
+---
+RX/JS aka reactive streams
+
+RxJS is an implementation for the reactive programming paradigm which implements mostly the observer and iterator
+pattern and follows the functional programming ideas. The pattern actually got a renaissance because it's not completely
+new but has new implementations in many frameworks and languages like Angular, Akka, Spring and many more. Reason for 
+that attention actually is (in the javascript world), that observables can be cancelled (by rules too) and  observables
+can pass (stream) data on multiple events. Both aspects are not well realizable using promises e.g. and both were also
+detected as a huge limitation in the JavaScript community — and so it's worth to get an understanding for reactive
+programming in general.
+
+We at AOE actually use RxJS in combination with Angular and can fully recommend the approach of observables.