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Spring Data with Thymeleaf

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Intro Today I’ll talk about more specific issues. No design patterns or algorithms this time :-). We don’t always design software components from scratch. Often we have to try to make existing software components work together. Spring Boot is one the best free software in the Java world. It resolved a lot of configuration issues with Spring. It is very ...

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Increasing network throughput with multiple Notaries

Do you need a very high throughput Corda network? Has the network’s throughput levelled out? Have you already squeezed out all the performance you could from other areas? If your answers to these questions are “yes”, then I may have some useful information for you. I have listed out these questions to decrease the chance of you prematurely optimising your ...

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Insights from Spark UI

As continuation of  anatomy-of-apache-spark-job post i will share how you can use Spark UI for tuning job. I will continue with same example that was used in earlier post, new spark application will do below things – Read new york city parking ticket – Aggregation by “Plate ID” and calculate offence dates – Save result DAG for this code looks like this ...

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Spring Boot Actuator Tutorial

spring-interview-questions-answers

Hello Friends, In this tutorial, we will learn about Spring actuator and what all it helps us with. 1. What is Spring Actuator? 2. How to add Spring actuator to Maven Project or Gradle Project? 3. Create a Spring Boot project with Spring Actuator dependency. 4. Monitoring the Application with Spring Actuator Endpoints. What is Spring Actuator? Once you have ...

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API Gateway & AWS Lambda for Authentication

java-interview-questions-answers

When Foreach initially stepped on the microservices wagon, we didn’t really build microservices. We thought we did, but there was always some logic present in all of our services. Of course, every service should really only focus on its own tasks and not on things that belong to another microservice. The most obvious thorn in our side was authentication and authorization logic. At a certain point, we had a couple of “micro”-services that verified the Authorization headers of ...

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Derby Database Backup

java-interview-questions-answers

Abstract I have already posted a number of blogs about Derby: Multiple Derby Network Servers on the same Host Apache Derby Database Users and Permissions Integration Testing with Maven and an In-Memory Derby Database This wasn’t intended to be a series. But over the years I’ve been using Derby more and more. Recently, I started using Derby as my database ...

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While Waiting for Jakarta EE

It is more than a year since Oracle announced the transfer of Java™ EE to Eclipse Foundation at JavaOne 2017. Since then, a lot has happened: Java™ EE 8 API and implementation projects have been set up under EE4J. The Eclipse GlassFish 5.1 release is approaching. A brand new Jakarta EE specification process is right around the corner. Community shows ...

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Serverless Security: Putting it on Autopilot

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Ack: This article is a remix of stuff learned from personal experience as well as from multiple other sources on serverless security. I cannot list down or acknowledge all of them here; nevertheless, special thanks should go to The Register, Hacker Noon, PureSec, and the Serverless Status and Serverless (Cron)icle newsletters. We all love to imagine that our systems are ...

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