Rambling Ideas

Understanding the Operational Costs of Rusty CloudWatch Exporter

An analysis of Rusty CloudWatch Exporter's operational expenses, emphasizing how its architecture influences the costs associated with fetching metrics from AWS, both in nominal terms and in comparison with alternative mechanisms.

Software Engineering

Simple Licensing Validation Scheme Using JOSE

Leveraging common and standardized technologies to design and implement a scheme to verify licenses on the client side in isolation.

Software Engineering

Better AWS CloudWatch Exporter: Ingestion Architecture Overview

How to leverage AWS CloudWatch Metric Streams to build a Prometheus exporter for AWS metrics: overall ingestion architecture, pros and cons versus using the CloudWatch API.

Software Engineering

The Unsatisfying State of Prometheus-Based Monitoring of AWS Infrastructure

Given that Prometheus and AWS are both industries standards, once would - incorrectly - assume that it would be easy to ingest AWS metrics into Prometheus. Here I explore the main flaws in the current tooling to ingest CloudWatch metrics into Prometheus.

Software Engineering

.NET Disposable Pattern Guidelines - How Good Are They?

After having to look into the recommended way of implementing the Disposable pattern in .NET/C#, there's a lot about it I find non-optimal. Ranging from the philosophical to actual implementation decisions.

Crypto

The case for something new in the crypto credit space

DeFi was developed to make credit markets more transparent in the crypto space, but its drawbacks, high-fees and high impact security vulnerabilities, are quite severe. This is the beginning of a proposal for a transparent-yet-centralized credit platform.

Software Engineering

Surgically upgrading yarn managed Javascript packages

Upgrading just a single library in Javascript might appear to be a trivial task. But there are a few non-intuitive elements that make it a bit more complicated.

Personal Infrastructure

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.