GemFire tutorial (Embedded-API)

This tutorial demonstrates how to use embedded GemFire with Local Region. Region – logical grouping of data, it implements the java.util.Map, data are stored in key value pair Local Region– no peer to peer activity

Client region

Data are hosted privately not visible to other cache member

There are only two files created for this Tutorial; FoodDish (Domain object), EmbeddedGemFireTest entry class pom.xml FoodDish EmbeddedGemFireTest

Spring data JPA

Spring Hibernate + JPA has been a popular combination of Java DAO layer. Hibernate claims it eases developer from writing SQL statement but arguably Hibernate adds other complications like HSQL and other annotation and entity class design such as Per-table and Per hierarchy tree. Spring Data really alleviates some of the pains ...

 Remember, one of my "non-technical" manager said "I like JAVA but it seems Application written in JAVA creates many files". At the time, the company was in process of switching from Coldfusion to JAVA. The manager has a valid point here. Look at example like this , <Customerdao>, Customerdaoimpl

Spring Data really free you from writing CustomerDaoImpl and DAO is defined in "Repository". I really like the idea of Repository vs DAO even though they are not mutually exclusive. Do we really care as software developer/engineer where the data is being saved? To me I care less about where the data is being stored but rather I care much more about store the data now and have the data be available when I want to retrieve it. Data should not be restricted in Object format even we are dealing with JAVA. There may be times, I want to take a XML file and extract information from the XML file with XPATH or XSLT. With much being said. Let's have a simple example of using Spring Data JPA. I won't post the entity classes here but they are trivial. If you want them, feel free to ask. I'll email to you. My application context
Repository
Unit Test