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java-interview-questions-answers

Learning Netflix Governator – Part 1

I have been working with Netflix Governator for the last few days and got to try out a small sample using Governator as a way to compare it with the dependency injection feature set ...
spring-interview-questions-answers

Using Netflix Hystrix annotations with Spring

I can’t think of a better way to describe a specific feature of Netflix Hystrix library than by quoting from its home page:Latency and Fault Tolerance by: Stop cascading failures. ...
spring-interview-questions-answers

Spring retry – ways to integrate with your project

If you have a need to implement robust retry logic in your code, a proven way would be to use the spring retry library. My objective here is not to show how to use the spring retry ...
scala-logo

Solving “Water buckets” problem using Scala

I recently came across a puzzle called the “Water Buckets” problem in this book, which totally stumped me. You have a 12-gallon bucket, an 8-gallon bucket and a 5-gallon ...
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 ...
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