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Tag Archives: Spring

The Biggest Flaw of Spring Web Applications

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The developers who are using Spring Framework in their applications are good to talk about the benefits of dependency injection. Unfortunately, they are not so good to leverage its benefits such as the single responsible principle and separation of concerns in their applications. If we take a look at any Spring powered web application, the odds are that the application ...

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Spring Integration – Robust Splitter Aggregator

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A Robust Splitter Aggregator Design Strategy – Messaging Gateway Adapter Pattern What do we mean by robust? In the context of this article, robustness refers to an ability to manage exception conditions within a flow without immediately returning to the caller. In some processing scenarios n of m responses is good enough to proceed to conclusion. Example processing scenarios that ...

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Simple Spring Memcached – Spring Caching Abstraction and Memcached

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Caching remains the one of the most basic performance enhancing mechanism in any read heavy database application. Spring 3.1 release came up with a cool new feature called Cache Abstraction. Spring Cache Abstraction provides the application developers an easy, transparent and decoupled way to implement any caching solution. Memcached is one of the most popular distributed caching system used across apps. In ...

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Spring MVC: Validator and @InitBinder

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It’s hard to imagine a web-application which doesn’t has some validation logic for an user data. Almost all user’s data has some constraints, e.g. date of birth should consist of day, month, year etc. Spring MVC has its own solution for the data validation, and it’s become available with the help of Validator interface. Usage of Spring MVC Validator A ...

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Invoking Async method call using Future object in Spring

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The next example will demonstrate an async method call inside the Spring container. Why do we need async method calls? In some cases we don’t really know if replay is expected or when a result supposed to be delivered back. Traditional way In the Java EE world of handling async calls is using Queue/Topic. We could do the same in ...

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Aggregating async results using Spring Integration

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Hi, I came across an issue which has very nice solution using Spring Integration. Many times we have the need for a scenario of dispatching a message to unknown number of destinations. For this purpose we have the Topic methodology. But some times in addition we also want to receive answers from all destinations which received the message and aggregate ...

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Testing Spring “session” scope

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In a Spring based Web application, beans can be scoped to the user “session”. This essentially means that state changes to the session scoped bean are only visible in the scope of the user session. The purpose of this entry is to simply highlight a way provided by Spring Test MVC to test components which have session scoped beans as ...

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Spring Data Solr Tutorial: Pagination

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In the earlier parts of my Spring Data Solr tutorial, we have implemented a simple search function which is used to search the information of todo entries. The current implementation of our search function shows all search results in a single page. This is not a viable solution for most real life applications because the number of search results can ...

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Spring Data Solr Tutorial: Sorting

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When we are implementing a word search function, we typically want to sort the search results in descending order by using the relevancy of each search result. This is also the default behaviour of Solr. However, there are situations when it makes to sense to specify the sort order manually. One such situation is an implementation of a “regular” search ...

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