Sajal Chakraborty - LaptrinhX

Java tuple – Working with tuples in Java

In this Java tutorial, we will learn about Java Tuple – a generic data structure and how we can use tuples in a Java program. Tuple, by default, are not present in Java programming

Spring cloud ribbon with eureka – Client side load balancer example

In this Spring cloud tutorial, learn to use client side load balancing using Netflix Ribbon in spring boot/cloud projects. Learn to build microservice based applications which use ribbon as client side load

Spring retry module example with spring boot

In this Spring boot tutorial, learn how we can build applications using spring retry module facility where we have to call some methods where exception is sometimes expected and we have to retry

Spring boot caching tutorial with example

In this Spring boot tutorial, learn to easily manage application cache from Spring framework caching support. Spring has some nice features around caching and the abstraction on the spring cache API is very

Spring Boot Remoting – Spring RMI annotation example

In This Spring boot tutorial, learn how spring provides different mechanism to invoke remote methods which are hosted in different JVMs and most likely in different server. This is referred as RMI (remote

Amazon Alexa Custom Skill Tutorial

Alexa is Amazon’s cloud-based voice service. You can experience it in new generation voice based devices such as Alexa echo. These devices work on voice commands e.g. Echo connects to the

Spring Boot Actuator Endpoints Example

In this Spring boot actuator tutorial, learn about in-built HTTP endpoints available for any boot application for different monitoring and management purposes. Before spring framework, if we had to introduce this type of

Spring Boot SOAP Client – WebServiceTemplate Example

Learn to consume SOAP web services using spring boot soap client and auto client proxy class generation using JAXB maven plugin. Creating a SOAP web service is out of the scope of this

Spring boot RSS feed with rome

In this tutorial, learn to create and consume RSS and Atom feed from spring boot application. You must have seen this in form of text or image buttons on various websites (like our

Spring Boot SOAP Webservice Example

Learn to leverage Spring boot’s simplicity to create SOAP webservice quickly. REST and microservices are gaining popularity everyday but still SOAP has its own place in some situations. In this spring

Spring Boot SSL [https] Example

In this spring boot example, learn to configure web application to run on SSL (HTTPS) with self-signed certificate. Also learn to create SSL cert, as well.SSL Configuration for ImpatientsSpring boot HTTPS Config

Java chatbot example using aiml library

In this Java AIML tutorial, we will learn to create simple chatbot program in Java. A Chatbot is an application designed to simulate the conversation with human users, especially over the Internet. Internally

Spring Cloud Zipkin and Sleuth Example

Zipkin is very efficient tool for distributed tracing in microservices ecosystem. Distributed tracing, in general, is latency measurement of each component in a distributed transaction where multiple microservices are invoked to serve a

ELK Stack Tutorial with Example

With use of microservices, we have been able to overcome many legacy problems and it allow us to create stable distributed applications with desired control on the code, team size, maintenance, release cycle,

Docker Tutorial with Hello World Example

Docker is a developer tool to package applications along with their runtime environment, so anybody can deploy and run them in any other machine without facing runtime environment conflicts. It is very similar

Hoverfly – Microservices Virtualization Example

Microservices virtualization is a technique to simulate the behavior of specific components in heterogeneous component-based applications such as API-driven applications, cloud-based applications or service-oriented architectures.Learn about service virtualization concepts in detail and

Dozer bean mapping example

Dozer is a powerful library which can help us in avoiding lots of unnecessary code, while we want to copy data from one bean to another bean. It is mainly bean to bean

AWS Lambda Function Example

Today along with Microservices, another concept is very popular that is Serverless architecture. Serverless refers to the cloud deployment model with elasticity where you deploy your code/services to 3rd party cloud providers

Project Lombok – Eclipse Installation and Examples

Lombok is very handy tool for minimizing the boilerplate code as well as providing lot’s of other features such as lazy loading, thread safety or immutability. This is the reason it

Netflix zuul example – zuul api gateway pattern – spring cloud tutorial

Learn to create load balancer using Netflix Zuul and its solid bonding with Spring Cloud. Here we will mainly concentrate on API gateway pattern and it’s usage. We will build a

Consul Service Registration and Discovery Example

Learn to create Microservices, based on Spring cloud, registering on HashiCorp Consul registry server and how other microservices (discovery clients) use it to register and discover services to call their APIs.We will

How to Create and SSH Connect to AWS EC2 Instance

EC2 stands for Elastic Compute Cloud and this is the backbone of AWS Infrastructure as a Service (IaaS) offering. In this tutorial, we will learn to create an EC2 instance from AWS console

Hystrix Circuit Breaker Pattern – Spring Cloud

Learn to leverage the one of the Spring cloud Netflix stack component called Hystrix to implement circuit breaker while invoking underlying microservice. It is generally required to enable fault tolerance in the application

Swagger – Spring REST Example

Now a days REST and Microservices have got a lot of momentum. At the same time, actual REST specification does not suggest any standard way to document the REST APIs that we are

How to Host Static Website or Content on AWS S3 Storage

Learn about Amazon S3 (Simple Storage Service), creating a bucket in AWS S3 and then hosting static website or static contents in the storage area.Table of Contents What is AWS S3 Static