Published in Javarevisited·PinnedMember-onlyCreate a Kafka Cluster with Azure Kubernetes ServiceCreate a Kafka cluster with external access with Azure Kubernetes Service (AKS) — In this article, we’ll demonstrate to create an Apache Kafka cluster with Azure Kubernetes Service. We’ll also ensure the external applications not running in the AKS cluster can also access the Kafka topics. Creating the K8s cluster with Azure Kubernetes Service Let us first create a two node Kubernetes (K8s) cluster with AKS. Browse to Kubernetes Serviecs page…Kubernetes5 min readKubernetes5 min read
PinnedMember-onlyHow to effectively version your RESTful APIsLearn different REST API versioning techniques — Versioning RESTful APIs is one of the critical task that we must consider while designing our APIs. There are various strategies that one can employ to version the APIs. The following are a few commonly used ones: Using URI versioning. In this approach, we use a version number identifier in…Spring Boot1 min readSpring Boot1 min read
Published in The Startup·PinnedMember-onlyUnderstanding Java 8’s Consumer, Supplier, Predicate and FunctionFunctional programming in Java in a better way. — Java has introduced functional programming support in Java release version 8. This specific release has also introduced several new concepts notably lambda expressions, method reference and a plethora of functional interfaces. While discussing functional interfaces, there are few functional interfaces namely Consumer, Supplier, Predicate and Functions are most crucial. …Java4 min readJava4 min read
PinnedThe arrival of Spring Boot in Practice BookSpring Boot in Practice is a Spring Boot book from Manning Publications due to be released this year. A practical Spring Boot guide that aims to provide a solid foundation on Spring Boot and provides an in-depth discussion on several core Spring Boot features such as auto-configurations, actuator, security, and several new features such as reactive Spring Boot, WebSocket, Kotlin DSLs, GraalVM, and many more.Development2 min readDevelopment2 min read
Published in Javarevisited·Mar 6Member-onlySix Newly Introduced Features of Spring Boot 3.0A Summary of changes introduced/updated in Spring Boot 3.0 that you should be aware of. — Spring Boot 3.0 was released on November 2022. Here is a consolidated list of changes introduced/updated to the framework. 1. Java 17 Baseline and Java 19 Support To use Spring Boot 3, you need minimum JDK 17. It will not work with JDK 8 or 11. If you are using JDK lower than version 17, then you need…Development3 min readDevelopment3 min read
Published in Level Up Coding·Feb 6Member-onlyReal time data sync across S3 buckets with Amazon EventBridge and AWS Step FunctionsIn this article, we’ll discuss how to replicate data from one S3 bucket to another S3 bucket in real time with Amazon EventBridge and AWS Step Functions. This solution is flexible and extendable. …AWS4 min readAWS4 min read
Nov 6, 2022Member-onlySetting up Kafka Mirror Maker for Kafka Topic ReplicationApache Kafka Mirror Maker 2 assists to replicate topics across Kafka clusters — In this article, we’ll demonstrate how to use Apache Mirror Maker to replicate Kafka Topics across two Kafka clusters. Set Up For demonstration, we’ll have the following set up: We’ll set up two Kafka clusters in two separate Kubernetes clusters (with AKS). You can refer to this article to set up the…Technology3 min readTechnology3 min read
Aug 5, 2022Member-onlyReactive Programming with RSocket and Spring BootIn this article, we’ll explore the RSocket protocol and its use with Spring Boot — RSocket is an application protocol for multiplexed, duplex communication over TCP, WebSocket, and other byte stream transports such as Aeron. RSocket allows the following four communication models as shown in following figure 1: In RSocket, once the initial handshake between the client and server is done, the “client” vs “server”…Spring Boot6 min readSpring Boot6 min read
Apr 25, 2021Member-onlyUsing Querydsl With Spring Data JPAThe Querydsl lets us build type-safe queries using its fluent API — Introduction The Querydsl is a third-party library that lets us define type-safe queries. It also makes the query generation relatively easy through its fluent DSL APIs. In general, the native SQL or the Java Persistence Query Language (JPQL) does not provide any means to validate the correctness of the queries at…Technology5 min readTechnology5 min read
Mar 27, 2021Member-onlyMonitor Your Boot Applications with Spring Boot ActuatorSpring Boot Actuator lets you monitor and interact with your Spring Boot application. It provides several production-grade features that you can enable in your Spring Boot application at no extra cost. — Introduction We develop applications and run them in production. Any application running in production requires some amount of monitoring to ensure that the application is in desired health condition. This is not a choice but an absolute need to ensure smooth customer service and to be in business. …Development5 min readDevelopment5 min read
