Graylog is a platform (free and enterprise) that is useful for log management of aggregated data. It is based on Elasticsearch, MongoDB and Scala. It can display messages and histograms. To send data to a graylog server through an HTTP appender with log4J2, i used the GELF layout with the following configuration : I had … Read more
It seems to me that the order of execution of the reader, the processor and the writer, inside a step and a chunk, is not always clear in everybody’s mind (included mine when i started with Spring Batch). So I made the following 2 tables that should help – I hope – clarify things. 1) … Read more
Externalizing part of the configuration of a webapp in a .properties file that is located outside of that webapp (outside the WAR, the EAR …) is a frequent requirement and I initially thought that the PropertyPlaceholderConfigurer class, provided by the Spring framework and which is an implementation of the BeanFactoryPostProcessor interface, would help me to … Read more
AOP can be a good solution to protect the business methods in an application developed with (or without) GWT. If we have a method called displayCustomerData(…) and we want to make sure only a certain category of users can call it, for instance the category MANAGER, then AOP can come to the rescue. I used … Read more