Microservice and Serverless With Micronaut + GraalVM

Microservice and Serverless With Micronaut + GraalVM

Micronaut is creating a buzz around cloud-native application development due to its enriched features and optimizations based out of modern Polyglot JVM.

Micronaut® framework is creating a buzz around cloud-native (microservice, serverless ) application development due to its enriched features and optimizations based out of modern Polyglot JVM — GraalVMoptimizers.

For GraalVM ** optimizers go thought **Part1 of this series GraalVM — Byte Code to Bit Code.

Why Micronaut® and what makes it the next level stuff as a framework for Cloud-Native development :

  • Natively Cloud Native
  • Micronaut®'s cloud support is built right in, including support for common discovery services, distributed tracing tools, cloud runtimes and leading vendors ( AWS, AZURE, GCP).
  • Ready for Serverless Development
  • Micronaut® low overhead compile-time DI and AOP make it perfect for writing functions for serverless environments like AWS Lambda, Azure Functions etc.
  • Fast Start Time — Low Memory Consumption
  • Reflection-based IoC framework load and cache reflection data for every single field, method, and constructor in your code. Whereas with Micronaut®, your application startup time and memory consumption are not bound to the size of your codebase. Micronaut® build around GraalVM. Micronaut features a dependency injection and aspect-oriented programming runtime that uses no reflection. This makes it easier for Micronaut applications to run on GraalVM.
  • Micronaut apps start in a tenth of millisecond with GraalVM!
  • Built with Non-Blocking Http Server on Netty
  • With a smooth learning curve, Micronaut’s HTTP server makes it as easy as possible to expose APIs that can be consumed by HTTP clients.
  • Design for Building Resilient Microservices
  • Distributed environments require planning for failure. Micronaut’s built-in support for retry, circuit breaker, and fallbacks help you plan.
  • Faster Data Layer Configuration
  • Micronaut provides sensible defaults that automatically configure your favorite data access toolkit and APIs to make it easy to write your own integrations. Supports like Caching, SQL, NoSQL, and different DB vendor products are readily available.
  • Fast and Easy Testing
  • Easily spin up servers and clients in your unit tests, and run them instantaneously with mostly auto-generated test stuff for main source code.
  • Reloading (or “hot-loading”)
  • Out of box excellent support of hot reloading, restart, and reinitialization with build-in JVM agent support rather than relying on classloader reloading or proprietary JVM agents like JRebel etc. It is an important feature to make the development cycle efficient and fast.
  • Refreshable feature
  • @Refreshable is another interesting scope offered by Micronaut. You can refresh the state of a bean by calling the HTTP endpoint /refresh or by publishing RefreshEvent to the application context.

How to Get Started Along Microservice With Micronaut

Create an app using the Micronaut Command Line Interface.

Installing Micronaut® manually comes with a super-rich & intuitive CLI that we will be using for the rest of the project lifecycle ( its power-pack CLI features add to developers productivity). We will be doing 3case studies with Micronaut® to compare and benchmark its potential relative to today’s Cloud-Native de-facto framework — SpringBoot.

_Case A : _ Micronaut ® _ app on GraalVM optimised JIT_

_Case B : _ Micronaut ® _ app on GraalVM “Native-Image”_

Case C : SpringBoot on openJDK HotSpotVM JIT — conventional way

Let’s get to the suspense straight-in with below depiction of different benchmarking results :

Benchmarking Micronaut

Micronaut application benchmarking

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