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Event Driven Microservices Patterns

In this blog we will discuss some patterns which are often used in microservices applications which need to scale: Event Stream Event Sourcing Polyglot Persistence Memory Image Command Query Responsibility Separation The Motivation Uber, Gilt and others have moved from a monolithic to a microservices architecture because they needed to scale.  A monolithic application puts all of its functionality into a ...

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How Java’s Built-In Garbage Collection Will Make Your Life Better (Most of the Time)

Solve App Problems 10x Faster with AppDynamics – Monitor production apps at code-level depth with minimal overhead. Start a FREE Trial! “No provision need be made for the user to program the return of registers to the free-storage list.” This line (along with the dozen or so that followed it) is buried in the middle of John McCarthy’s landmark paper, ...

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Copy & paste driven development

Software development is rife with copy & paste: all of us resort to copy and paste coding sometimes. We know we probably shouldn’t, but we do it anyway. It’s like the industry’s dirty little secret: we mainly just copy and paste code from the internet or from somewhere else in the code base then bash it till it works. But ...

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Storing and querying trillions of events

This is a second post in series describing our recent infrastructure / architecture transition in Plumbr. The first part focused upon event capturing part of the architecture. In the current post we are analyzing how the captured events are stored and are later accessed via user interface. Again, the post walks you through the motivation for the change & describes ...

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Persistent Storage for Docker Containers

In this week’s Whiteboard Walkthrough, Dale Kim, Sr. Director of Industry Solutions at MapR, describes how MapR addresses the challenge of providing a persistence tier to containers in big data settings. Dale describes a new technology to support Docker containers, the MapR Persistent Application Client Container, or PACC. This lets you deploy containers anywhere, with security enabled, while also providing ...

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Seeing Is Believing

Recently, I’ve done a management workshop on TDD. The audience was developmenet managers and team leads. Most of them did not know TDD. (Actually, most thought they knew what TDD was. But that’s a completely unrelated story.) During my session, I’ve walked them through an example (from Star Wars) and showed the thinking behind it, applying the steps to “real” software ...

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Dockerizing an existing Rails application

Docker is a relatively new and rapidly growing project that allows creating very light “virtual machines”. Prerequisites There are no specific skills needed for this tutorial beyond a basic comfort with the command line and using a text editor. The following services are needed: Docker Hub (Login – Signup if you haven’t ) A Rails application Setting up your computer Getting ...

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