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Articles by Szymon Fiedler
The most underused pattern in Ruby
Szymon Fiedler
August 31, 2023
ruby
value object
rails event store
How to become 10x developer with a help of ChatGPT
Szymon Fiedler
August 29, 2023
ruby
productivity
parser
ast
How to write a good incident postmortem
Szymon Fiedler
March 17, 2023
First class json(b) handling in Rails Event Store
Szymon Fiedler
January 27, 2023
rails event store
json
Sometimes it's worth to test your framework features
Szymon Fiedler
November 21, 2022
rails
postgresql
mysql
How we got struck by 5–year–old implementation
Szymon Fiedler
November 15, 2022
ruby
rails
postgresql
Test which reminded me why I don't really like RSpec
Szymon Fiedler
November 3, 2022
testing
rspec
ruby on rails
Don't waste your time on assets compilation on Heroku
Szymon Fiedler
February 23, 2022
rails
heroku
assets
sprockets
A lesser known capability of Ruby's JSON.parse
Szymon Fiedler
October 23, 2021
ruby
rails
json
Fighting the primitive obsession with Value objects
Szymon Fiedler
May 1, 2021
value object
domain-driven design
How to build a read model with Rails Event Store Projection
Szymon Fiedler
May 1, 2021
rails event store
domain-driven design
read model
projection
Use ActiveAdmin like a boss
Szymon Fiedler
March 19, 2021
rails
domain-driven design
read model
legacy
Painless Rails upgrades
Szymon Fiedler
July 3, 2020
rails
Ultimate guide to 3rd party calls from your Aggregate
Szymon Fiedler
February 25, 2020
domain-driven design
aggregate
api
Image Placeholder for your development environment
Szymon Fiedler
November 13, 2018
rails
rack
middleware
Make your JSON API tests clean with linter
Szymon Fiedler
October 30, 2017
testing
rails
json
api
Composable RSpec matchers
Szymon Fiedler
September 18, 2017
rails event store
rails
rspec
How to setup development work with RailsEventStore and mutant
Szymon Fiedler
September 6, 2017
rails event store
rails
domain-driven design
mutation testing
Test critical paths in your app with ease thanks to Dependency Injection
Szymon Fiedler
June 7, 2017
testing
rails
rspec
One more step to DDD in a legacy rails app
Szymon Fiedler
May 21, 2016
rails
domain-driven design
active record
migration
The smart way to check health of a Rails app
Szymon Fiedler
February 26, 2016
rails
How RSpec helped me with resolving random spec failures
Szymon Fiedler
February 12, 2016
rails
rspec
A Simple feature toggle for a Rails app
Szymon Fiedler
November 22, 2015
rails
Sitemaps with a bit of Metal
Szymon Fiedler
February 13, 2014
rails
sitemap
37 signals was not lying, you win by being remote
Szymon Fiedler
January 9, 2014
team
async remote
identity
