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Your first Web application with Play and Scala

Today we are going to develop a simple play application using Scala. To do so we must have sbt installed to our system. Once installed we issue the command sbt new playframework/play-scala-seed.g8 Then we are presented with an interactive terminal in order to pass valuable information. name [play-scala-seed]: PlayStarter organization [com.example]: com.gkatzioura scala_version [2.11.8]: scalatestplusplay_version [2.0.0]: play_version [2.5.13]: Then let ...

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Distributed Cache – Overview

What’s a distributed cache? A solution that is “deployed” in an application (typically a web application) and that makes sure data is loaded from memory, rather than from disk (which is much slower), in order to improve performance and response time. That looks easy if the cache is to be used on a single machine – you just load your ...

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MySQL Partition Pruning

Recently, we learned an expensive lesson about MySQL partition pruning. There, it is better to share it here so that others will not repeat our mistake. Background In our system, there is a big stats table that does not have primary key and indexes. This table is partitioned, but the lack of indexes often causes the full partition or even ...

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New Webinar: How to Avoid the Hidden Costs of Continuous Delivery

The time has come to solve the missing link of the CI/CD toolchain With constant change, comes constant risk. The silent killer of CI/CD initiatives is also its biggest advantage, a side effect of moving too fast when a major component of the same process that pushes releases forward remains outdated and left behind. A common misconception is that Continuous ...

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[MEGA DEAL] The 2017 Complete Java Bundle (95% off)

Embark On Your Coding Odyssey with A Deep Dive (58 Hours!) Into the Most Commonly Used Programming Language Hey fellow geeks, This week, on our JCG Deals store, we have an extreme offer. We are offering The 2017 Complete Java Bundle for only $49 instead of the original price of $1,273, yeap that is a massive 96% off. Use Practical ...

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Optional Dependencies in the Java Platform Module System

The Java Platform Module System (JPMS) has a strong opinion on dependencies: By default, they need to be required (to be accessible) and then they need to be present both at compile and at run time. This does not work with optional dependencies, though, where code is written against artifacts that are not necessarily present at run time. Fortunately, the ...

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A journey with Scala

To those who are regular visitors of this blog, it is well known that when it comes to developing code I am a Spring/Java guy. Also I use different technologies like node or python but this depends largely on the project’s needs. Due to some recent projects and courses involving Spark, stumbling on Scala was inevitable. After some investigation I decided ...

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From Macro to Microservices: Jumpstarting Your Transition

In my last article, we went through the reasons why changing from macro to microservices might be a good idea. In this one, we get to the real stuff: How a facade proxy should function to start replacing your old services and/or introducing new ones the easy way, and then how to deploy it to AWS inside a Docker container. ...

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