The Guts of Git

The Guts of Git

Nov 20, 2012

Git is a version control system. We can look at it from that high level. Git is a content tracking system. Some teachers advise us to look at it from that lowered elevation. But I will take you to the very bottom. The floor. The code. The algorithms. The directed acyclic graph of hashed bit sequences made efficient through LZW compression and deferred garbage collection determined by node reachability via hash relationships.

“But why?”, you may ask. “Why go this deep?” Git is a tool that works so well for so many. It mystically corrects anticipated merge conflicts. It’s “where did code come from” results from blame are impressive. The ability to re-write history through rebase is awesome. The globally unique identifier nature of a hash-produced ref is revolutionary.

Uber-geeks are magic-slayers. We want and need to know precisely how things work. Like a hard 50 push-up workout, this study will make working with Git at the daily developer level a fraction of the effort — like a mere ten push-ups. Let’s dig into the guts of Git.

About the Speaker

Matthew McCullough

Matthew is an energetic 15 year veteran of enterprise software development and world-traveling open source educator. Matthew guides the Training efforts at GitHub.com and is author of the Git Master Class series for O’Reilly, co-author of the O’Reilly’s Version Control with Git book, co-author of the Presentation Patterns book, a speaker on the No Fluff Just Stuff tour, an author of three of the top 10 DZone RefCards, including the Git RefCard, and President of the Denver Open Source Users Group.

Posted in Meetings
AJUG Meetup

Server to Cloud – convert a legacy platform to a micro-PaaS using Docker

April 15, 2014

The talk will begin with how to setup a local Docker development environment (Windows or Mac OSX) as Docker runs atop Linux. The basics of Docker will be examined including how to use image repositories, and a brief description of available UI’s for managing Docker containers (Shipyard and DockerUI).

Next, example applications will be built for progressively more robust use cases and deployments; to demonstrate the power, flexibility and scalability of Containerization with Docker. The first example will discuss a simple two container model to encapsulate a database and application layer, which will lead to demonstration and discussion about more robust deployments that include features such as service discovery, automatic load balancing, and abstractions to simplify linking of containers. The context of the talk with be how Containerization enables architectural choice, scalability, and polyglot environments.

Docker and supporting technologies will be discussed to expose the multitude of supporting technologies within the ecosystem such as Flynn, Serf (makes or Vagrant), CoreOS, Deus, HAProxy and more.

Technologies that may be employed within containers during the demonstration include, Java, Scala, Akka, Docker, vert.x or node.js, memcached, mysql, mongo.”

Location:


Holiday Inn Atlanta-Perimeter/Dunwoody

4386 Chamblee Dunwoody Road,
Atlanta, GA (map)

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