Datenanalyse mit R für Administratoren
August 23rd, 2014 at FrOSCon 2014 in Sankt Augustin, Germany
My talk (in German) about using R in system administration. It starts with simple data analysis (mean, IQR, quantiles) and shows the power of a stem plot when a simple terminal logon is all you have. The talk continues by introducing how the Holt-Winters algorithm can be used to find suitable parameters for a forecast based on the RRD tools. Finally I use my own USL package to analyze the scalability of a Tomcat application.
Iteration & Loops in Puppet 4
February 5th, 2016 at Puppet Camp Amsterdam in Amsterdam, Netherlands
A talk about the new iteration features (each, map, filter, reduce, slice) that are available with Puppet 4 and the Future Parser. It introduces the new syntax for coding loops and adds examples how loops can be used to individually manage array items, transform complex hash or array data structures, select items based on conditions or create validations with better error messages.