Cassandra: Batch Loading Without the Batch — The Nuanced Edition

My previous post on this subject has proven extraordinarily popular and I get commentary on it all the time, most of it quite good. It has however, gotten a decent number of comments from people quibbling with the nuance of the post … Continue reading 

Posted in Cassandra, Java | Leave a comment

ASP.NET, Docker and Messaging

Introduction In my last post I showed how we can debug and test a containerized ASP.NET application. In this post I want to show how messaging works for .NET vNext applications using RabbitMQ as the underlying infrastructure. At the time … Continue reading 

Posted in .NET, ASP.NET vNext, containers, docker | Comments Off

Testing and debugging a containerized ASP.NET application

Introduction In my previous post I showed in detail how a node JS application running in a Docker container can be debugged and how we can run automated tests against this application also in a container. In this post I … Continue reading 

Posted in ASP.NET vNext, containers, docker, How To, introduction | Comments Off


A couple of times a week I get a question where someone wants to know how to “failover” to a remote DC in the driver if the local Cassandra DC fails or even if there is only a couple of … Continue reading 

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Testing and Debugging a Containerized Node application

Introduction Containers in general and Docker in specific have changed the way how we think about running and deploying software quite a bit. Running an application in a container instead of directly on your computer or server has a lot … Continue reading 

Posted in containers, docker, introduction, node, tutorial | 6 Comments

Zero Downtime

Introduction This post is part of my series about Implementing a CI/CD pipeline. Please refer to this post for an introduction and a complete table of contents. First of all we need to distinguish the types of applications that we … Continue reading 

Posted in architecture, CI/CD, Micro services, patterns, practices | 2 Comments

Building a slack bot with botkit node and docker

Recently I have needed to dig deeper into node and docker.  I decided to make a slack bot (easy to do) so that the problem being solved didn’t require additional learning (making bots is fun).  I ended up finding botkit … Continue reading 

Posted in Bot, Docker, Node | 1 Comment

Are you learning Docker yet

I went to a docker meetup last week many weeks ago (just now hitting publish).  It was sort of a town hall panel discussion where four guys with loads of docker experience were fielding questions and responding from their experience. … Continue reading 

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Connection to Oracle From Spark

For some silly reason there is a has been a fair amount of difficulty in reading and writing to Oracle from Spark when using DataFrames. SPARK-10648 — Spark-SQL JDBC fails to set a default precision and scale when they are not defined … Continue reading 

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Reflection Scala-2.10 and Spark weird errors when saving to Cassandra

This originally started with this SO question, and I’ll be honest I was flummoxed for a couple of days looking at this (in no small part because the code was doing a lot). But at some point I was able to … Continue reading 

Posted in Cassandra, Spark | Tagged , , | Leave a comment