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#tutorials

Tutorial: Setting up a CI/CD pipeline

CI/CD for Spring Boot Microservices: Part 1

How can you get started with Continuous Integration with Spring Boot? In this tutorial, learn how Continuous Integration and Delivery will help you test and prepare a Java app for Docker. This is part one of a tutorial series by Tomas Fernandez. By the end of this article, you will have set up your first CI/CD pipeline and know all about it!

A curious production problem

TCP: out of memory — consider tuning tcp_mem

Ram Lakshmanan discusses a curious production problem with an application running on multiple AWS EC2 instances behind Elastic Load Balancer. In this article, find out about the error message “TCP: out of memory — consider tuning tcp_mem”, how it was handled, and some concluding advice about memory problems and the ‘dmesg’ command.

Becoming acquainted with Cassandra

Tutorial: Getting started with Apache Cassandra

Apache Cassandra is a database that offers high availability and massive scalability. In this tutorial, Scott Hendrickson, Cloud Architect Team Lead, at DataStax shows you how to get started using Apache Cassandra. Find out how to create a service for a video recommendation application as a starting point for learning more about how Apache Cassandra works.

Answering some common questions

Who? Why? What? Fix? – System.gc()

In this article, Ram Lakshmanan goes over some commonly asked questions about the System.gc() API call. What is System.gc()? How do you detect whether System.gc() calls are made from your application? What are the downsides of invoking System.gc()? Find out all this and more.

Multiple stages are not only a best practice but also mandatory

Multiple stages within a Kubernetes cluster

When you are planning to transition into the cloud, you may wonder how many Kubernetes clusters you will need. If you want to learn how to create isolated stages within a Kubernetes cluster, this article is for you. Michael Frembs also discusses the advantages and disadvantages of multiple stages.

Making Java development more appealing

REST API Vision with Manifold

Discover how to use Manifold to enable JSON Schema as your REST API single source of truth (SSoT). Scott McKinney explains how the new Manifold framework connects your JSON Schema and YAML resources directly to Java without code generators, annotated POJOs, or other go-betweens.

Why Amazon Cloud is a very promising choice

Building a custom web analytics tool using Amazon Cloud

Web analytics tools have matured rapidly beyond providing just aggregate level reporting into page views and bounce rates. In this article, Alexey Karavay talks about the appeal of building a custom solution with AWS cloud.

An except from Blockchain across Oracle

An introduction to Blockchain

Still not sure about blockchain? Robert van Mölken explores the basics of distributed ledger technologies and shows how they can be a solid foundation for future success. Here, we dive deeper into the architectural intricacies that make up blockchain.

Setting up a smart forum app using Google Cloud AI [Tutorial]

Are you ready to use Google Cloud AI? This tutorial is based off a book by Arvind Ravulavaru called Google Cloud AI Services Quick Start Guide. Melisha Dsouza explains how you can utilize the power of Google Cloud AI to set up a project, installi dependencies, go through the code, and run the app.