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Arnold Galovics

Being a good software engineer is 3% talent, 97% not being distracted by the internet.

Tag: spring

Passing headers with Spring Cloud Feign

 February 15, 2018

Feign is a great way to communicate between services. Spring Cloud has it’s own way of defining Feign clients, it’s done with Spring MVC annotations. Usually it’s a common requirement Continue reading

 Leave a comment Tagsfeign, spring, spring-boot, spring-cloud, spring-cloud-netflix

How much projections can help?

 July 10, 2017May 25, 2018

For one of my presentations, I wanted to have some numbers regarding the efficiency of projections. If you don’t know what projections are, read this previously written article. I basically Continue reading

 2 Comments Tagshibernate, jpa, measurement, performance, spring, spring-data, spring-data-jpa

Configuring a datasource-proxy in Spring Boot

 June 26, 2017August 4, 2017

Have you ever heard about datasource proxies? No worries, it’s not complicated at all. Let’s say you want to access the database from an application. First you have to configure Continue reading

 16 Comments Tagsdatabase, spring, spring-boot

The detaching pitfall of declarative transaction management with Spring and JPA/Hibernate

 May 15, 2017

Anyone who is familiar with Spring and JPA knows about the magical  @Transactional annotation which helps us to focus on the business logic rather than programming transactions around. This approach is so Continue reading

 2 Comments Tagsjpa, spring, spring-core

Using projections in your data-access layer

 March 14, 2017

If you care about your data-access layer to make it as fast as possible, you should consider using projections for reading data. Check a simple example together. We have cities Continue reading

 2 Comments Tagshibernate, java, jpa, spring, spring-data, spring-data-jpa, sql

Google OAuth with Spring Security as separated Resource Server

 February 5, 2017February 5, 2017

There are a lot of great articles out there about OAuth 2.0, Spring Security, REST especially when you are about to have both the Resource and the Authorization server in Continue reading

 11 Comments Tagsgoogle, oauth, resource-server, rest, spring, spring-security

Session level Hibernate JDBC batching

 June 9, 2016July 6, 2016

Quite some time ago, I had a chance to try out one of the coolest features of Hibernate when I had to insert and update multiple entities. By multiple, I mean Continue reading

 7 Comments Tagsdatabase, hibernate, java, spring

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