Rambling Ideas

Money with Privacy: Run your own Monero node

Privacy is an overlooked feature in cryptocurrencies today. Monero makes privacy and confidentiality its priority. Running a node is key to guarantee that - here's a simple way of doing it.

Crypto

Market Making in Stellar 101: Fundamentals & Kelp

Brief introduction to Market Making in Stellar. Main concepts in security markets and market making. The importance of fostering this activity in Stellar and introduction to Kelp.

Personal Infrastructure

Share Your Thoughts: Setting Up a Blog Using Ansible and Ghost

Owning the platform you use to express yourself is becoming more important in these times. Use this guide to setup a ghost blog using ansible.

Personal Infrastructure

Structuring an Ansible Repo for Personal Infrastructure

An approach on how to structure an Ansible repo to manage your personal infrastructure.

Opinion

Taking Ownership of your Key Internet Services

Decentralizing the internet and taking power away from the giants starts with you owning your key services. This is my approach to do it.

Software Engineering

New project: backup-to-dropbox - Release 0.2.0

Version 0.2.0 of backup-to-dropbox has been released. New features include GPG encryption and PyPI installation.

Software Engineering

Writing Maintainable Code Tips: API Models != Domain Models

Using API models as your domain models in your business logic is not a good idea and leads to hard-to-maintain systems.

Personal Infrastructure

Setting up a OpenVPN gateway using docker containers

How to set up an OpenVPN node using docker with multiple services that are guaranteed to use the VPN. Leveraging Ansible to have it consistent and reproducible.

Personal Infrastructure

IDEX Staking Node Ansible Role

Description and motivation behind the development of the Ansible Role to setup an IDEX staking node.

Software Engineering

Database transaction handling in C++ systems

Architectural approach of a way to handle transactions in C++ systems. The approach aims to be as decoupled and non-invasive as possible.

Personal Infrastructure

Syncing external hard-drive with Dropbox for backup

Simple trick to run a secondary Dropbox daemon in Linux. Useful to generate alternative backups.

Software Engineering

Setup NAT Network for QEMU in Mac OSX

Step-by-step guide on setting up a bridged NAT network for QEMU in MacOS

Personal Infrastructure

Free SSL: Using "Let's Encrypt" for TLS certificates in your website

Quick and easy way of setting up Let's Encrypt to generate certificates for a site hosted by nginx.

Personal Infrastructure

Setting up a VPN gateway in Ubuntu using LXC containers and OpenVPN

Simple how-to for setting up a VPN gateway using LXC containers. Also covering the setup of a killswitch and a SOCKS5 proxy

Software Engineering

How to set up your own MongoDB sharded cluster for development in one host

Steps required to set up a MongoDB shared cluster environment in a single host in Linux.

Software Engineering

Validating a SSL certificate in Python

A way to perform SSL certificate validation in Python using PyOpenSSL and is multiplatform.

Programming Competitions

Project Euler Problem 182 - Solved

Solution to ProjectEuler's problem 182 in Python using a straight-forward approach together with public key cryptography properties.

Programming Competitions

Project Euler Problem 142 - Solved

Solution to ProjectEuler's problem 142 in Python by expression manipulation and brute-force.

Programming Competitions

Project Euler Problem 129 - Solved

Solution to ProjectEuler's problem 129 in Python using an efficient way to represent a repunit and modular exponentiation.

Programming Competitions

Project Euler Problem 132 - Solved

Solution to ProjectEuler's problem 132 in Python using an efficient way to represent a repunit and modular exponentiation.

Programming Competitions

CodeJam 2009 - Qualification Round - (B)Watersheds - Solution

Solution to CodeJam's 2009 Qualification Round problem B in Python using a straight forward approach.

Programming Competitions

CodeJam 2009 - Qualification Round - (A)Alien Language - Solution

Solution to CodeJams's 2009 Qualification round problem A in Python using a straight forward approach.

Programming Competitions

CodeJam 2010 - Round 1A - (A)Rotate - Solution

Solution to CodeJam's 2010 Round 1A problem A in Python using a straight forward approach.

Programming Competitions

Project Euler Problem 323 - Solved

Solution to ProjectEuler's problem 323 in Python using a dynamic programming implemented through memoization.

Programming Competitions

Project Euler Problem 158 - Solved

Solution to ProjectEuler's problem 158 in Python using dynamic programming implemented through memoization.