Hi there, I'm Marian Posăceanu: a thirty something Ruby developer. This is where I blog about: ruby, rails, performance, philosophy, javascript, conferences, tips, unicorn, jruby, heroku.

2025

The analogue programmer in the land of LLMs

2024

Moving from iTerm2 to Kitty for simplicity and performance

2023

Ruby meets LISP: Unveiling alien tech at Friendly.rb's lightning talk

Harmonizing Projects: Navigating the Graph of Estimation and Detail

2022

Don’t stress, use the right gear for the job

Hierarchy of perceptions

Tips: macOS save screenshots as JPEG in a different location

Interesting links - Is logging a "code smell" ?

2018

Multiple data stores and eventual consistency using micro-services

2017

The perils of writing request specs using concurrent-ruby under the JVM

JRuby, RVM and Vim walk into a (performance) bar

Keep your Rails logs free of unwanted noise

How to reduce the size of your VMs (macOS Update)

Programming archaeology: PHP's dollar sigil

2016

macOS Sierra upgrade from a developer's perspective

Using RVM for quite some time? You should clean it up a bit

Making Rails asset pipeline faster

2015

How to Web conference, random thoughts, mostly live - five years later

Shedding some light into UUID version 4 in Ruby and Rails

The half-life of a programmer

2014

Ruby 2.2.0 Preview 1 quick Rails benchmarks

Improve Rails performance by adding a few gems

Is Rubinius 2.2.3 production ready ?

2013

How to reduce the size of your VMs

Chunked transfer encoding in Rails (streaming)

On Ruby modules and concerns

On semantic Ruby block constructs

On Ruby 2.0 memory usage, Unicorn and Heroku

On font rendering consistency across browsers

On unnamed abstracts, entities and happiness

On writing artisanal code

2011

Buzzwords and manifestos

2010

The inherent entropy in our lives: to resist or to...

Using Firebug as a scalpel, yet not for web development

Programatica 2010 after thoughts

A few words on frontend performance optimizations

The frontend backend debacle

How to Web Conference, random thoughts, mostly live

Tomorrow is the first day of How to web 2010, this should be fun

Installing a rails mysql stack on my laptop was a bit tricky

How I speeded up my browsing experience by a really nice margin

Building a small blog cms in rails