Singleton Pattern is a design pattern which you often meet in almost applications. Singleton Pattern provides a way to instantiate only one instance in an application context.
The tutorial introduces the design of Singleton Design Pattern and give many ways to create a Singleton Pattern in your application.
[Continue reading…] “Java Design Pattern – Singleton Pattern”
Docker is a new revolution for Linux container and it is a powerful tool for MicroService development.
The tutorial will guild you how to build a Spring Boot application and deploy it with Docker container.
[Continue reading…] “Spring Boot with Docker Container”
For scaling a Batch Job, Parallel Steps is one solution that bases on the business logic of application. We split the logic business in distinct responsibilities, and each step can be executed in parallelized flow. The tutorial will guide you how to configure parallel steps with Spring Batch.
– Spring Batch Partition for Scaling & Parallel Processing
– How to start with Spring Batch using Spring Boot – Java Config
[Continue reading…] “Spring Batch Job with Parallel Steps”
In application development, sometimes we should make different configuration for each environment. Spring Profiles provides a way to separate application configuration into some parts and they are only available in one or more specific environments.
This tutorial introduces ways to use Spring Profiles by @Profile Annotation or XML Configuration.
[Continue reading…] “Spring Profiles – @Profile Annotation and XML Configuration”
Neo4j is a highly scalable, native graph database. Spring Data supports Spring Neo4J for Graph Database: annotated POJOs, SD-Repositories and Neo4j-Template.
Tutorial will guides you how to work with Spring Neo4j.
[Continue reading…] “Spring Neo4J”
@Value Annotations vs Environment vs @ConfigurationProperties.
Spring provides some ways to inject properties from properties file. We have learned how to use them in 3 articles:
– @Value Annotation
This tutorial helps you have a comparison view covering those solutions.
[Continue reading…] “Inject Properties using @Value Annotations vs Environment vs @ConfigurationProperties”
This tutorial will show you the better way to handle properties using @ConfigurationProperties Annotation.
In previous article, we have learned about using @Value annotation to inject properties from properties file. This approach has disadvantage that if we wanna change any property, we have to update all files which referenced it.
[Continue reading…] “Inject Properties from Properties File using @ConfigurationProperties Annotation”
Java is an Object Oriented Programming Language. Object and Class are 2 main concepts of Java.
What are Java Object & Java Class?
The tutorial will introduce Java Object & Java Class.
[Continue reading…] “Java Core – Object and Class concept”
How to initialize the state of Java object?
The tutorial will introduce Java Constructor for resolving above question.
[Continue reading…] “Java Core – Java Constructor”
Spring XD Option Module is an approach to expose metadata of each module for configuration. The tutorial will guide you how to configure PostgreSQL Datasource with Spring XD Annotation: @ModuleOption.
– Spring XD Stream – PostgreSQL JDBC Sink
– Spring XD Batch Job – How to Start
[Continue reading…] “Spring XD Option Module – Batch Job with PostgreSQL Datasource”