Supersonic, Subatomic gRPC Services With Java and Quarkus

Get an overview of gRPC and how it compares to REST over HTTP, then get started using Quarkus to implement and consume gRPC services.

gRPC is an open source  remote procedure call (RPC) framework. It was released by Google in 2015 and is now an incubating project within the  Cloud Native Computing Foundation. This post introduces gRPC while explaining its underlying architecture and how it compares to  REST over HTTP. You’ll also get started using  Quarkus to implement and consume gRPC services.

Remote Method Calling in gRPC

Wait, what’s this? Did you say remote method calling? Isn’t that something we did in the ‘90s with things like  CORBA,  RMI, and XML-RPC/ SOAP?

Well, from a conceptual standpoint, yes. The question is, “How do those older technologies relate to a modern framework like gRPC?”

gRPC is similar to CORBA and RMI in that they require generating and using client and server bindings. This, however, is really where the similarities end. The underlying transport mechanisms used and the tooling available for use in today’s technology frameworks are the main differences.

gRPC uses  HTTP/2 for transport and  protocol buffers as both its Interface Definition Language (IDL) and as its underlying message interchange format. In addition, tooling is built-into the framework for generating cross-platform client and server bindings for many languages and frameworks.

#java #microservices #kubernetes #quarkus #grpc

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How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Supersonic, Subatomic gRPC Services With Java and Quarkus

Get an overview of gRPC and how it compares to REST over HTTP, then get started using Quarkus to implement and consume gRPC services.

gRPC is an open source  remote procedure call (RPC) framework. It was released by Google in 2015 and is now an incubating project within the  Cloud Native Computing Foundation. This post introduces gRPC while explaining its underlying architecture and how it compares to  REST over HTTP. You’ll also get started using  Quarkus to implement and consume gRPC services.

Remote Method Calling in gRPC

Wait, what’s this? Did you say remote method calling? Isn’t that something we did in the ‘90s with things like  CORBA,  RMI, and XML-RPC/ SOAP?

Well, from a conceptual standpoint, yes. The question is, “How do those older technologies relate to a modern framework like gRPC?”

gRPC is similar to CORBA and RMI in that they require generating and using client and server bindings. This, however, is really where the similarities end. The underlying transport mechanisms used and the tooling available for use in today’s technology frameworks are the main differences.

gRPC uses  HTTP/2 for transport and  protocol buffers as both its Interface Definition Language (IDL) and as its underlying message interchange format. In addition, tooling is built-into the framework for generating cross-platform client and server bindings for many languages and frameworks.

#java #microservices #kubernetes #quarkus #grpc

Going Beyond Java 8: Local Variable Type Inference (var) - DZone Java

According to some surveys, such as JetBrains’s great survey, Java 8 is currently the most used version of Java, despite being a 2014 release.

What you are reading is one in a series of articles titled ‘Going beyond Java 8,’ inspired by the contents of my book, Java for Aliens. These articles will guide you step-by-step through the most important features introduced to the language, starting from version 9. The aim is to make you aware of how important it is to move forward from Java 8, explaining the enormous advantages that the latest versions of the language offer.

In this article, we will talk about the most important new feature introduced with Java 10. Officially called local variable type inference, this feature is better known as the **introduction of the word **var. Despite the complicated name, it is actually quite a simple feature to use. However, some observations need to be made before we can see the impact that the introduction of the word var has on other pre-existing characteristics.

#java #java 11 #java 10 #java 12 #var #java 14 #java 13 #java 15 #verbosity

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