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Matt Callanan
Software Developer passionate about making software delivery as efficient as possible.
Software Developer passionate about making software delivery as efficient as possible.
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c3vis: Finding Your Docker Containers on Amazon ECS Clusters
I've just released my first open source project: c3vis (Cloud Container Cluster Visualizer). It aims to give administrators and developers a simple interface to visualise how Docker containers have been deployed to Amazon's ECS service (for more information...

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Updating Definition of Done for Continuous Delivery and DevOps
Agile brought us the idea of the "definition of done" - basically team members must have a shared understanding of what it means for work to be complete (see  scrumguides  for a good explanation). But how does Continuous Delivery and DevOps change this?  No...

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Resources for David Logan's "Tribal Leadership"
I stumbled on David Logan's  "Tribal Leadership: Leveraging Natural Groups to Build a Thriving Organization" recently (a vailable on  amazon.com ).  It's an interesting way to categorise stages of culture within teams/organisations and identify how to impro...

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Nathan Marz: Suffering-Oriented Programming
Just read " Suffering-Oriented Programming " - a blog post from Nathan Marz (creator of Storm ). The central idea is that you need to understand a problem well before you try to solve it properly - especially before you build generic abstractions to solve m...

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Great AWS Tips
Came across some great AWS tips (care of Devops Weekly ) The list is below - go to this website for the full details:  https://wblinks.com/notes/aws-tips-i-wish-id-known-before-i-started/ Application Development Store no application state on your servers. 
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Henrik Kniberg's "Scaling Agile at Spotify"
Henrik Kniberg's done it again. He's taken a working example of complex process implementation and compressed it into a highly informative, easily-watchable and easily-readable format that makes it simple to grab the concepts and, crucially, to help show ot...

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Little's Law
Little's Law: Avg queue time = WIP / Throughput Delivery rate = WIP / Lead Time MeanResponseTime = MeanNumberInSystem / MeanThroughput   or Avg Inventory = Throughput * Avg queue time Avg Customers in system = Avg arrival rate * avg customer time in system ...

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Experimenting with AWS EC2 Container Service
Amazon EC2 Container Service ("ecs" for short) is a Docker cluster management service that runs on top of EC2 instances.  There is no additional charge for the service - you pay for the EC2 instances whether you're using them or not.  It's early days but lo...

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