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Using Micrometer with Spring Boot 2


This is a very quick introduction to using the excellent Micrometer library to instrument a Spring Boot 2 based application and recording the metrics in Prometheus Introduction Micrometer provides a Java based facade over the client libraries that the different monitoring tools provide. As an example consider Prometheus, if I were to integrate my Java application with Prometheus, I would have used ...

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Exclusive Book Offers (75% off): Big Data Analytics with Java, Scala and Spark for Big Data Analytics, Big Data Visualization

Hello fellow Geeks! Today, we have some exciting news for you! Java Code Geeks and Packt have teamed up to offer you weekly discounts on their extensive library of books. This week, we are offering discounts on three books to help you understand and master Clojure. Check them out! Big Data Analytics with Java By Rajat Mehta This book covers ...

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Scala client for Amazon Glacier


Amazon Glacier is a secure, durable, and extremely low-cost cloud storage service for data archiving and long-term backup. Glacier offers a cold storage data archival solution meaning the stored data is not available for immediate retrieval. You need to first request retrieval of the data and access time can vary from minutes to several hours, depending on the service level ...

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Kubernetes 1.8: Using Cronjobs to take Neo4j backups

With the release of Kubernetes 1.8 Cronjobs have graduated to beta, which means we can now more easily run Neo4j backup jobs against Kubernetes clusters. Before we learn how to write a Cronjob let’s first create a local Kubernetes cluster and deploy Neo4j. Spinup Kubernetes & Helm minikube start --memory 8192 helm init && kubectl rollout status -w deployment/tiller-deploy --namespace=kube-system ...

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Kubernetes: Copy a dataset to a StatefulSet’s PersistentVolume

Neo4j Clusters on Kubernetes This posts assumes that we’re familiar with deploying Neo4j on Kubernetes. I wrote an article on the Neo4j blog explaining this in more detail. The StatefulSet we create for our core servers require persistent storage, achieved via the PersistentVolumeClaim (PVC) primitive. A Neo4j cluster containing 3 core servers would have the following PVCs: $ kubectl get ...

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How to Deploy Spring Application Without web.xml to Tomcat


Introduction Since the Servlet 3 specification web.xml is no longer needed for configuring your web application and has been replaced by using annotations. In this article, we will look at how to deploy a simple Spring-based application without web.xml to Tomcat 8.5.*. Creating an Empty Application Use the following command to create an empty web application using maven webapp archetype: ...

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Minimize Java Memory Usage with the Right Garbage Collector

Size matters when it comes to software. It has become clear that using small pieces within the microservice architecture delivers more advantages compared to the big monolith approach. The recent Java release of Jigsaw helps decompose legacy applications or build new cloud-native apps from scratch. This approach reduces disk space, build time and startup time. However, it doesn’t help enough ...

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Building a Restful API interface using Android Things

Building a Restful API interface using Android Things is useful whenever we have to connect Android Things to an external system. This article explains how to build a Restful API interface using Android Things so that other apps or applications can invoke this API. There are several scenarios, where Android Things has to be integrated with external systems and it ...

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