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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 ...
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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 ...
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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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Scala and Java 8 type inference in higher order functions sample

One of the concepts mentioned in the Functional Programming in Scala is about the type inference in higher order functions in Scala and how it fails in certain situations and a workaround ...
spring-interview-questions-answers

Customizing HttpMessageConverters with Spring Boot and Spring MVC

Exposing a REST based endpoint for a Spring Boot application or for that matter a straight Spring MVC application is straightforward, the following is a controller exposing an endpoint ...
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