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Tag Archives: Spring

Consumer Driven Testing with Pact & Spring Boot

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Recently a colleague of mine stumbled across Pact.io,  Our current application had grown to over 50 services and we we’re starting to have some integration test failures and a brittle dev / acceptance test environment. So we decided to have a look at ways to try help with this. I started out by reading: https://docs.pact.io/faq/convinceme.html Then watching: https://www.youtube.com/watch?v=-6x6XBDf9sQ&feature=youtu.be Those 2 resources convinced me ...

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Beware of slow transaction callbacks in Spring

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TL;DR If your application is failing to obtain new database connection, restarting ActiveMQ broker may help. Interested? The problem with performance Few months ago we experienced a production outage. Many requests were failing with all too familiar: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30003ms. at com.zaxxer.hikari.pool.HikariPool.createTimeoutException(HikariPool.java:555) ~[HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:188) ~[HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:147) ~[HikariCP-2.4.7.jar:na] at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:99) ...

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Pipeline as code with a Spring Boot application

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This is the last in a serie of posts about continuous delivery based on my local Docker compose stack (see the first and second post here). In this post I use a simple Spring Boot project to show how to make use of the ‘pipeline as code‘ concept. Please note that this is only an example and much, much more ...

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Spring Boot – Configure Log Level in runtime using actuator endpoint

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As of Spring Boot 1.5 a new loggers actuator endpoint allows viewing and changing application logging levels in runtime. Add spring-boot-actuator to your project <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> Disable security for loggers or for all endpoints Set either management.security.enabled to false or endpoints.loggers.sensitive to false to disable security. Note that the latter changes only loggers endpoint. Get all loggers details ...

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Spring Data with JPA and @NamedQueries

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If you use Spring Data and @NamedQuery annotations at your JPA entity you can easily use them in a more convenient way using the spring data repository. On a previous blog we created a spring data project using spring boot and docker. We will use the pretty same project and enhance our repository’s functionality. We will implement a named query ...

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Spring Tutorial: Creating a Hello World REST API Using Spring Framework and Spring Boot

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Spring Framework was created as a result of disappointment of Java community with earlier versions of Enterprise Java. Since then it has grown into huge ecosystem that allows one to solve every problem in building a Web-based Java application and more. Spring is often criticized because it used to rely on XML for configuration purposes. As a response to that ...

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Push Spring Boot Docker images on ECR

On a previous blog we integrated a spring boot application with EC2. It is one of the most raw forms of deployment that you can have on Amazon Web Services. On this tutorial we will create a docker image with our application which will be stored to the Amazon EC2 container registry. You need to have the aws cli tool ...

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Spring Boot – The Right Boot for you!

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Need a little spring in your step? Tired of all those heavy web servers and deploying WAR files? Well you’re in luck. Spring Boot takes an opinionated view of building production-ready Spring applications. Spring Boot favors convention over configuration and is designed to get you up and running as quickly as possible. In this blog, I will walk you through ...

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