Light 4j is a fast, lightweight and cloud native microservices framework. Light means lightweight, lighting fast and shed light on how to program with modern Java SE. It is 44 times faster than the most popular microservices platform Spring Boot embedded Tomcat and use only 1/5 of memory. 
Its features include: 
<ul>
<li>Plugin architecture for startup/shutdown hooks and middleware components</li>
<li>Distributed OAuth2 JWT security verification as part of the framework</li>
<li>Request and response validation against OpenAPI specification at runtime</li>
<li>Metrics collected in influxdb and viewed from Grafana Dashboard for both services and clients</li>
<li>Global exception handling for runtime exception, api exception and other checked exceptions</li>
<li>Mask sensitive data like credit card, sin number etc. before logging</li>
<li>Sanitize cross site scripting for query parameters, request headers and body</li>
<li>Audit to dump important info or entire request and response.</li>
<li>Body parser to support different content types</li>
<li>Standardized response code and messages from configuration file</li>
<li>Externalized configuration for all modules for dockerized environment</li>
<li>CORS pre-flight handler for SPA (Angular or React) from another domain</li>
<li>Rate limiting for services that exposed outside to the Internet</li>
<li>Service registry and discovery support direct, Consul and Zookeeper</li>
<li>Client side discovery and load balance to eliminate proxies</li>
<li>A client module that is tightly integrated with Light-OAuth2 and supports traceability</li>
</ul>

Light 4j is a fast, lightweight and cloud native microservices framework. Light means lightweight, lighting fast and shed light on how to program with modern Java SE. It is 44 times faster than the most popular microservices platform Spring Boot embedded Tomcat and use only 1/5 of memory.

light-4j - A fast, lightweight and more productive microservices framework

An application metrics facade for the most popular monitoring tools. Instrument your code with dimensional metrics with a vendor neutral interface and decide on the monitoring backend at the last minute. Micrometer is the instrumentation library underpinning Spring Boot 2.0's metrics collection.
 
As an instrumentation facade, Micrometer allows you to instrument your code with dimensional metrics with a vendor-neutral interface and decide on the monitoring system as a last step. Instrumenting your core library code with Micrometer allows the libraries to be included in applications that ship metrics to different backends. It supports out-of-the-box instrumentation of caches, the class loader, garbage collection, processor utilization, thread pools, and more tailored to actionable insight.

 An application metrics facade for the most popular monitoring tools. Instrument your code with dimensional metrics with a vendor neutral interface and decide on the monitoring backend at the last minute. Micrometer is the instrumentation library underpinning Spring Boot 2.0's metrics collection.

Micrometer - An application metrics facade for the most popular monitoring tools

Quarkus is a Cloud Native, Container First framework for writing Java applications. A Kubernetes Native Java stack tailored for GraalVM &amp; OpenJDK HotSpot, crafted from the best of breed Java libraries and standards. Quarkus tailors your application for GraalVM and HotSpot. Amazingly fast boot time, incredibly low RSS memory (not just heap size!) offering near instant scale up and high density memory utilization in container orchestration platforms like Kubernetes. It allows developers to automatically generate Kubernetes resources including building and deploying container images without having to manually create YAML files.
Quarkus is based on a&nbsp;<a href="https://quarkus.io/version/main/guides/quarkus-reactive-architecture" target="_blank" rel="noopener">reactive core</a> allowing your application to mix reactive and imperative components. It helps to compose asynchronous operations and complete the result when everything is done without blocking the I/O threads using <a href="https://quarkus.io/version/main/guides/mutiny-primer" target="_blank" rel="noopener">Mutiny Reactive API</a>.&nbsp;&nbsp;

Quarkus is a Cloud Native, Container First framework for writing Java applications. A Kubernetes Native Java stack tailored for GraalVM & OpenJDK HotSpot, crafted from the best of breed Java libraries and standards. Quarkus tailors your application for GraalVM and HotSpot. Amazingly fast boot time, incredibly low RSS memory (not just heap size!) offering near instant scale up and high density memory utilization in container orchestration platforms like Kubernetes. 

Quarkus - Supersonic Subatomic Java

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