Sunday, June 22, 2014

Simple in-memory caching with Spring 3.2 and Google Guava

    There was a proposal (not really original :)) that we can use cache to relieve external system and make our own system faster. It should be a really simple in-memory cache without any replication and fancy mechanisms. It should only have max-number-of-elements and expiration-time-after-write properties. Can that requirement be implemented in Spring easily?

Thursday, June 12, 2014

A gentle touch of functional programming with Java 8 - prime numbers

    'Functional programming' are buzz words nowadays. Let's try to play a little bit with that. The only assumption of this post is... to have some fun :).

Saturday, May 31, 2014

Multiple SOAP headers in Apache Camel's Spring WS endpoint

    Life is all about abstraction. When you read this article you do not think about electrical impulses which travel through your brain between synapses. When you drive a car you do not need to know the internal details on how it works. By no doubt abstraction is good. But is it always that good?

Tuesday, May 6, 2014

Liquibase and PL/SQL with Oracle DB

If you have ever dreamed about Continuous Delivery (CD) you surely thought about deployment which is fully automated. It implies automated management of database scripts. With the help provided by Liquibase it is easy to add some automation to database change sets deployment. However, there is a small downside in Liquibase implementation that makes it a little bit trickier to execute PL/SQL pieces.

Tuesday, February 25, 2014

NoSuchMethodError and binary compatibility

    Some time ago I received NoSuchMethodError when I was dealing with multiple versions of the same library. I decided to dig into mentioned error's root cause.