Semi-irregular Sysadmin Ninja's Github Digest (Vol. 18)

I was slacking for a long time, I know. Sorry for that. I'll push two issues in a row now, this is the first one. Will try to make it more regular, will include other sources too.

1. The Crystal Programming Language 
http://crystal-lang.org
https://github.com/manastech/crystal
New programming language, named Crystal. "We love Ruby’s efficiency for writing code. We love C’s efficiency for running code. We want the best of both worlds." Programs look like Ruby, but compiles to efficient native code, and has compile-time error evaluation like Rust. Worth to check out, if you're PL freak, like me. :)

2. chef-koans
An experimental, test-driven way to learn about Chef.
https://github.com/leftathome/chef-koans
"An experimental, test-driven way to learn about Chef. Takes some inspiration from Ruby Koans and from other things that are awesome and simple." Unfortunately, only lesson number 0 is ready now - but you're welcome to contribute, of course!
Also, if you didn't read Vim koans or Git koans - please try, it's quite fun.

3. node-bell
Real-time anomalies detection for periodic time series.
http://eleme.io/blog/2014/metrics-monitor
https://github.com/eleme/node-bell

4. streem
prototype of stream based programming language
https://github.com/matz/streem
A prototype of new PL from an author of Ruby - Yukihiro "matz" Matsumoto. It's on very early stage of development.

5. sfs
Asynchronous Filesystem Replication
https://github.com/immobiliare/sfs

6. gitfs
Version controlled file system
http://presslabs.com/gitfs/
https://github.com/PressLabs/gitfs

7. awesome-courses
List of awesome university courses for learning Computer Science!
https://github.com/prakhar1989/awesome-courses

8. mochi
Dynamically typed functional programming language
https://github.com/i2y/mochi

9. consul-do
Do something based on leadership status
https://github.com/zeroXten/consul-do

10. openbay
The Pirate Bay source code.
https://github.com/isohuntto/openbay

Semi-irregular Sysadmin Ninja's Github Digest (Vol. 12)

Let's continue with review of most interesting Github projects.
N.B. this is vol. 12 - from quite old draft, I hope it's still relevant :)
Sorry for small comments, mostly projects are speak for themselves.

1. changelog
"What's changed in the last twenty minutes?"
https://github.com/prezi/changelog
The basic idea is that you'll send any event that has even a remote chance of causing problems to simple web service with REST interface. Later, when something goes wrong, you can quickly check what's changed in the last minutes / hours.
It's interface looks like this:



Very nice idea, indeed, especially with some graphing solution w/anomaly detection.
Clients for bash/python/java/etc. already exists.


2. db-readings
Readings in Databases
https://github.com/rxin/db-readings
A list of papers essential to understanding databases and building new data systems. Very nice reading for all sysadmins and developers. Only one problem exists - where I can find enough time for that????? :)

3. bitcoinbook
Mastering Bitcoin - Unlocking digital currencies - Early Release Draft
https://github.com/aantonop/bitcoinbook
Another "must-read" book for everyone who interested in digital currencies - it's about Bitcoin internals and technical realization. Early release of book is also available by O'Reilly.

4. github-cheat-sheet
A collection of cool hidden and not so hidden features of Git and GitHub
https://github.com/tiimgreen/github-cheat-sheet
Good stuff, even for experienced Git-hubbers.

5. Awesome Chef
A curated list of amazingly awesome Chef resources
https://github.com/obazoud/awesome-chef/
Where's our "Awesome Puppet"?

Ah, there it is:
6. Awesome Puppet
A curated list of amazingly awesome puppet resources
https://github.com/olindata/awesome-puppet

7. mcrouter
Mcrouter is a memcached protocol router for scaling memcached deployments.
https://github.com/facebook/mcrouter
Another nice piece of stuff from Facebook Engineering team. Must have if you're (still) using memcached on more than couple of servers.

8. masscan
TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes
https://github.com/robertdavidgraham/masscan

9. powa
PostgreSQL Workload Analyzer http://dalibo.github.io/powa
https://github.com/dalibo/powa

10. elasticsearch-HQ
Monitoring and Management Web Application for ElasticSearch instances and clusters.
https://github.com/royrusso/elasticsearch-HQ
Also nice tool for all ElasticSearch users.