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Using PouchDB for Offline/Data Sync

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Recently the term “Mobile First” received additional notoriety as the new CEO of Microsoft proclaimed the company’s shift in focus. As I’ve been researching mobile frameworks lately, I’ve run across another term – “Offline First.” As much as you may be online with your mobile phone or tablet, inevitably there will be times when you’re not connected, but still need ...

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How To Return Error Details From REST APIs

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The HTTP protocol uses status codes to return error information. This facility, while extremely useful, is too limited for many use cases. So how do we return more detailed information? There are basically two approaches we can take:         Use a dedicated media type that contains the error details Include the error details in the used media ...

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The Illusion of Control

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Why do we keep trying to attain control? We don’t like uncertainty, and control over a piece of reality relaxes us. A controlled environment is good for our health. In fact, when we are in control we don’t need to do anything. Things work out by themselves, for our satisfaction, because we’re in control. Being in control means never having ...

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SBT AutoPlugins Tutorial

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This tutorial will guide you through the process of writing your own sbt plugin. There are several reasons to do this and it’s really simple:                   Add customized build steps to your continuous integration process Provide default settings for different environments for various projects Before you start, make sure to have sbt ...

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Hibernate collections optimistic locking

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Introduction Hibernate provides an optimistic locking mechanism to prevent lost updates even for long-conversations. In conjunction with an entity storage, spanning over multiple user requests (extended persistence context or detached entities) Hibernate can guarantee application-level repeatable-reads. The dirty checking mechanism detects entity state changes and increments the entity version. While basic property changes are always taken into consideration, Hibernate collections ...

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Spring Caching abstraction and Google Guava Cache

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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 newer cache implementations that Spring now provides with 4.0+ version of the framework – using Google Guava Cache In brief, consider a service which has a few ...

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Tomcat to Wildfly: Configuring Database connectivity

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This excerpt has been taken from the “From Tomcat to WildFly” book in which you’ll learn how to port your existing Tomcat architectures to WildFly, including both the server configuration and the applications running on the top of it. WildFly is a fully compliant Java Enterprise Edition 7 container with a much wider set of available services and options compared ...

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A RESTful JDBC HTTP Server built on top of jOOQ

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The jOOQ ecosystem and community is continually growing. We’re personally always thrilled to see other Open Source projects built on top of jOOQ. Today, we’re very happy to introduce you to a very interesting approach at combining REST and RDBMS by Björn Harrtell. Björn Harrtell is a swedish programmer since childhood. He is usually busy writing GIS systems and integrations ...

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