All the things are scattered here

random flying posts

2016

Packaging software with Docker and Effing

How we can use docker and the Effing Package Management to greatly simplify, speed and account the packaging process

Building AWS AMIs with Packer-Ansible: tips and tricks

Some tips and tricks on how to use Packer and Ansible with the base AWS Linux AMI.

Building an AWS AMI with encrypted root device

PCI-DSS recommends to use machines with all the volumes encrypted in order to prevent data leakage due to disk loss/theft. An AWS solution.

Compressing Redshift tables

Compress data to reduce ~ 50% disk space and improve query performance. You might then reduce the number of cluster nodes, saving money.

Saving money by optimizing usage of RDS instances

Revising DB metrics and scaling down RDS infrastructure lead to saving 12,614 dollars / year

Testing AWS RDS failover downtime

Getting comfortable and experienced with the inevitable RDS downtime when modifying instance types/sizes

2015

Practical machine learning: HAR random forests prediction

Using parallelized random forests algorithm to predict HAR

Practical machine learning: HAR data massaging and simple tree example

A random flying collection of data juggling techniques