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java-interview-questions-answers

RabbitMQ – Processing messages serially using Spring integration Java DSL

If you ever have a need to process messages serially with RabbitMQ with a cluster of listeners processing the messages, the best way that I have seen is to use a “exclusive consumer” ...
spring-interview-questions-answers

Spring RestTemplate with a linked resource

Spring Data REST is an awesome project that provides mechanisms to expose the resources underlying a Spring Data based repository as REST resources. Exposing a service with a linked ...
spring-interview-questions-answers

Externalizing session state for a Spring-boot application using spring-session

Spring-session is a very cool new project that aims to provide a simpler way of managing sessions in Java based web applications. One of the features that I explored with spring-session ...
spring-interview-questions-answers

Spring boot war packaging

Spring boot recommends creating an executable jar with an embedded container (tomcat or jetty) during build time and using this executable jar as a standalone process at runtime. It ...
spring-interview-questions-answers

Spring boot based websocket application and capturing http session id

I was involved in a project recently where we needed to capture the http session id for a websocket request – the reason was to determine the number of websocket sessions utilizing ...
spring-interview-questions-answers

Spring Caching abstraction and Google Guava Cache

Spring provides a great out of the box support for caching expensive method calls. The caching abstraction is covered in a great detail here. My objective here is to cover one of the ...
docker-logo

Docker RabbitMQ cluster

I have been trying to create a Docker based RabbitMQ cluster on and off for sometime and got it working today – fairly basic and flaky but could be a good starting point for others ...
rabbitmq-logo

Spring @Configuration – RabbitMQ connectivity

I have been playing around with converting an application that I have to use Spring @Configuration mechanism to configure connectivity to RabbitMQ – originally I had the configuration ...
spring-interview-questions-answers

Spring @Configuration and injecting bean dependencies as method parameters

One of the ways Spring recommends injecting inter-dependencies between beans is shown in the following sample copied from the Spring’s reference guide here:                   @Configuration public ...
spring-interview-questions-answers

Spring WebApplicationInitializer and ApplicationContextInitializer confusion

These are two concepts that I mix up occasionally – a WebApplicationInitializer and an ApplicationContextInitializer, and wanted to describe each of them to clarify them for myself. I ...
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