Getting hip with JHipster

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@sendilkumarn Ge.ing Hip with JHipster Sendil Kumar N

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@sendilkumarn Hello I’m Sendil @sendilkumarn @sendilkumarn

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@sendilkumarn Tamil Nadu, India @sendilkumarn

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@sendilkumarn Netherlands @sendilkumarn

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@sendilkumarn Developer @ Xebialabs

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@sendilkumarn Team Member @JHipster / @webpack Open source Polyglot Programmer

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@sendilkumarn Agenda • JHipster • What it is ? • What it can do? • Why you need it? • JDL - JHipster Domain Language (Demo included) • Microservices with JHipster (Demo included) • Kubernetes & Istio (Demo included)

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@sendilkumarn What is JHipster ?

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@sendilkumarn Java Hipster

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@sendilkumarn JHipster is a development plaKorm

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@sendilkumarn JHipster is a development plaKorm to generate

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@sendilkumarn JHipster is a development plaKorm to generate, develop

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@sendilkumarn JHipster is a development plaKorm to generate, develop, and deploy full-stack applications

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@sendilkumarn What you can do with it?

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@sendilkumarn

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@sendilkumarn ++ Front end

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@sendilkumarn

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@sendilkumarn

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@sendilkumarn ++ Databases

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@sendilkumarn

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@sendilkumarn Create & Maintain database

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@sendilkumarn

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@sendilkumarn ++ Microservices

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@sendilkumarn

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@sendilkumarn API / Gateway Pa.ern

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@sendilkumarn API Pa.ern is easy and the most used microservices pa.ern

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@sendilkumarn Terminology aleS…

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@sendilkumarn Gateway

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@sendilkumarn Microservice Applications

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@sendilkumarn

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@sendilkumarn Caching

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@sendilkumarn Code Coverage >82% in 42K lines we generate

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@sendilkumarn CI / CD Pipeline

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@sendilkumarn CI / CD Pipeline

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@sendilkumarn Deployments

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@sendilkumarn Deployments

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@sendilkumarn Cloud ready

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@sendilkumarn Monitor / Operate

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@sendilkumarn JHipster Registry Monitor / Operate

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@sendilkumarn JHipster Console Monitor

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@sendilkumarn ++ more

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@sendilkumarn

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@sendilkumarn Why you need JHipster?

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@sendilkumarn Faster Development

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@sendilkumarn Latest libraries & frameworks

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@sendilkumarn ++ Developer Experience

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@sendilkumarn ++ Developer Learning

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@sendilkumarn API ]rst development

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@sendilkumarn How to generate an application?

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@sendilkumarn Well, let us see.

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@sendilkumarn npm i -g generator-jhipster

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@sendilkumarn Create a folder

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@sendilkumarn echo “application { config {} }” > app.jdl

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@sendilkumarn jhipster import-jdl app.jdl

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@sendilkumarn Hooray Application generated…

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@sendilkumarn Demo for the people who don’t believe in magic

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@sendilkumarn JDL

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@sendilkumarn JHipster Domain Language

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@sendilkumarn What you can do with that • Create a JHipster Application • Create entities • Create relationships

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@sendilkumarn application { config { } }

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@sendilkumarn application { config { baseName: ‘jhipster’ packageName: ‘tech.jhipster’ applicationType: ‘monolith’ databaseType: ‘sql’ ........ } }

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@sendilkumarn application { config { } } //Another app application { config { } } //Yet another app application { config { } }

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@sendilkumarn application { config { } } entity { fieldName fieldType }

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@sendilkumarn Microservices

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@sendilkumarn Why do you need microservices?

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@sendilkumarn Independent Development

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@sendilkumarn Independent Deployment

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@sendilkumarn Fault Isolation

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@sendilkumarn Granular Scaling

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@sendilkumarn Wow, this is awesome I just need to create the micro services. It solves all my problems

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@sendilkumarn Wow, it is awesome I just need to create the micro services. It solves all my problems

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@sendilkumarn Monoliths are pe`ect ]t for most of the use-cases.

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@sendilkumarn Think a lot before embarking a journey ✈into micro-services.

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@sendilkumarn StaS faster with monolith. Then understand your domain and then conveS them to micro-services

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@sendilkumarn Side-eaects of Microservices

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@sendilkumarn 99.999999999999% availability is always expected

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@sendilkumarn Service Registries / Health checkers

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@sendilkumarn ❌ ❌ ❌ ❌ ❌ ❌ ❌

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@sendilkumarn Microservices in JHipster

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@sendilkumarn API Gateway BFF pa.ern

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@sendilkumarn Let us create a microservice application

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@sendilkumarn Kubernetes

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@sendilkumarn Kubernetes is Open -source system for automating deployment, scaling and management of containerized applications

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@sendilkumarn With JHipster you can create Kubernetes con]guration ]les that eases your Kubernetes con]guration.

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@sendilkumarn Service in K8s Load Balancer Load Balancer Services

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@sendilkumarn Service in K8s Node PoS Master 30000 30001 30002 30003 Services

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@sendilkumarn Service in K8s Ingress Ingress controller 10.0.0.1 10.0.0.3 10.0.0.2 10.0.0.4 Services