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Building a Spring Boot MVC Web App with DynamoDB for a Game Leaderboard In this article, we’ll walk through the process of building a Spring Boot MVC web application that interacts with an Amazon DynamoDB table to display a game leaderboard. The application will allow users to view top scores for specific games, retrieve scores for individual users, and display all scores for a particular user. We’ll also explore how to use the AWS SDK for Java to interact with DynamoDB. Prerequisites Before diving into the Spring Boot project, ensure the following prerequisites are met: DynamoDB Table Setup : Create a DynamoDB table named leaderboard with the following schema: Partition Key: user_id Sort Key: sk Global Secondary Index (GSI): sk-top_score_index with sk as the partition key and top_score as the sort key. AWS CLI Configuration : Configure the AWS CLI to connect to your AWS account. This setup is necessary...

AWS DynamoDB is a serverless, key and value pair NOSQL database. The schema design concept is different from traditional relational database. You can understand the DynamoDB table design within 10 minutes in this video. 

Create, Edit and Delete data with Spring data repository In the last part of this tutorial, we will add create, edit and delete function to the MongoShop Product Catalog application. Table of Contents: 1. Introduction to sample application (MongoShop Product Catalog) 2. MongoDB schema design and data preparation 3. JSF (PrimeFaces) and Spring data MongoDB Integration 4. Enquriy data with spring data repository and mongotemplate 5. Create, Edit and delete data The search page is modified. A modal confirm dialogue box is added before the product is physically deleted updated search.xhtml <html xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:p="http://primefaces.org/ui"> <ui:composition template="/template/common.xhtml"> <ui:define name="pageTitle"...

Table of Contents: 1. Introduction to sample application (MongoShop Product Catalog) 2. MongoDB schema design and data preparation 3. JSF (PrimeFaces) and Spring data MongoDB Integration 4. Enquriy data with spring data repository and mongotemplate 5. Create, Edit and delete data Enquriy data with spring data repository and mongotemplate Spring Data Repository: Spring Data repository abstraction reduces the boilerplate code to write the data access layer of the application. Automatic implementation of Repository interfaces provides simple operation on mongoDB. It helps our product save and delete function make MongoTemplate: MongoTemplate offers convenience operations to create, update, delete and query for MongoDB documents and provides a mapping between your domain objects and MongoDB documents. In our application, since the spring data repository cannot fulfill the requirement of searching function, we use MongoTemplate to archive the searching capability. Custom...

Table of Contents: 1. Introduction to sample application (MongoShop Product Catalog) 2. MongoDB schema design and data preparation 3. JSF (PrimeFaces) and Spring data MongoDB Integration 4. Enquriy data with spring data repository and mongotemplate 5. Create, Edit and delete data JSF (PrimeFaces) and Spring data MongoDB Integration pom.xml of the project <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelversion>4.0.0</modelVersion> <groupid>com.borislam</groupId> <artifactid>mongoShop</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>MongoShop Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupid>...

Table of Contents: 1. Introduction to sample application (MongoShop Product Catalog) 2. MongoDB schema design and data preparation 3. JSF (PrimeFaces) and Spring data MongoDB Integration 4. Enquriy data with spring data repository and mongotemplate 5. Create, Edit and delete data MongoDB schema design and data preparation MongoDB Introduction MongoDB is a open-source scalable, high-performance NoSQL database. It is a document-oriented Storage. It can store JSON-style documents with dynamic schemas. In this application, each product is stored as JSON-style document in MongoDB. Schema Design in MongoDB Each product in the catalog contains general product information (e.g. sku, title, and product type), price details (e.g. retail and list price) and product sub-details (e.g. tracks of audio CDs / chapters of books). In this application, MongoDB is used. The schema design will be focus more on the data usage. It is different from traditional RDBMS schema design. The ...

In this year, I will start a new series of “Sample application Tutorials”. In this series of tutorial, a sample case study application will be built with different technologies. In this tutorial, sample JSF application with Spring Data MongoDB will be covered. Table of Contents: 1. Introduction to sample application (MongoShop Product Catalog) 2. MongoDB schema design and data preparation 3. JSF (PrimeFaces) and Spring data MongoDB Integration 4. Enquriy data with spring data repository and mongotemplate 5. Create, Edit and delete data Introduction to sample application (MongoShop Product Catalog) After this tutorial, a sample application (MongoShop Product Catalog) with the following functional requirement will be built: 1. Searching product with different criteria (e.g. sku, product type, title, stc) 2. Create a new product with different category. 3. Edit selected product details 4. Delete selected product from the enquiry screen. Presentation Layer:...