Quick Start: AWS SQS + Spring Boot Processing FIFO Queues

Brandon Klimek AWS, Microservices, Spring Boot, Technology Snapshot Leave a Comment

AWS SQS (Simple Queue Service) can provide developers with flexibility and scalability when building microservice application(s). In this quick start tutorial, we will demonstrate how to configure a FIFO queue for a fictional online marketplace.

What Is A FIFO Queue?

A FIFO (first in, first out) queue is used when the order of items or events is critical, or where duplicates items in the queue are not permitted. For example:

– Prevent a user from buying an item that isn’t available on a marketplace.

Spring Boot and React: Happily Ever After

Matt McCandless Problem Solving, React, Spring Boot, Technology Snapshot Leave a Comment

So you have mastered Spring Boot and started toying around with React. Now you want React to talk to your Boot app as your back-end API. That’s fabulous. You probably already know how to do this, but there is a kicker. You want to package them and start both of them as just one project.

Well, you’re in luck! This blog is going to take a couple of simple projects and combine them into one project. Lace up your boots and get ready to React!

Gaining Docker Image Size Efficiencies By Separating Application Layers

Luke Patterson Docker, Java, Problem Solving, Spring Boot, Technology Snapshot Leave a Comment

Problem

I was pushing a new Docker image tag for each application code commit, and the admins of the private registry were getting annoyed at how much space I was using.

Solution Summary

Yes, I know there are strategies to clean up old tags but I first wanted to reduce the impact of the tags I was pushing. With the right layering strategy, I knew I could reduce the net registry size increase of consecutive tag pushes.

I wanted to only push what had actually changed in the application. In addition to reducing the impact on the registry, having smaller tag deltas could possibly speed up rolling deployments since nodes could potentially have less to download.

Using MongoDB and Spring Boot to Create a RESTful Web Service

Robert Rice Java, Spring Boot, Technology Snapshot Leave a Comment

Spring Boot is a framework designed to simplify the bootstrapping and development of a new Spring application. The framework takes an opinionated approach to configuration, freeing developers from the need to define a boilerplate configuration. MongoDB is a simple set up and easy to use document database. A RESTful API is an application program interface (API) that uses HTTP requests to GET, PUT, POST and DELETE data.

In this post, I will demonstrate the process of creating a RESTful web application with Spring Boot and MongoDB.

Interactive REST API Documentation with Swagger UI

Bing Liu Microservices, Spring, Spring Boot, Technology Snapshot 2 Comments

I am assisting a client that is migrating from a monolithic legacy application to a modern Microservice stack with Spring REST. We are helping to implement Swagger UI to provide both a front-end API UI, as well as to provide a level of documentation at the same time. This implementation has simultaneously met our project requirements, as well as garnering some positive feedback from our client!

Swagger UI is one of the most popular tools to visually render beautiful, interactive API documentation. In this blog, I’ll use a REST API application to demonstrate some usage of Swagger UI. The source project is available at https://github.com/bingliu2016/spring-boot-rest-swagger2.