Fly.io Multi-Region Ruby with Postgres Read Replicas
Serve a Ruby web app from multiple Fly.io regions and route read requests to Postgres read replicas when possible
Heroku Postgres Restore to Staging and Development
Restore a production database into staging and development environments
Postgres-Backed Job Queue in Ruby
Persist jobs in a Postgres queue and work them with the Ruby Postgres driver
Cache API Calls
Caching the response bodies of HTTP GET requests can improve performance and help avoid hitting rate limits
SSH Key with Ed25519
Make ~/.ssh/authorized_keys look nicer
Postgres Visualize Slow Queries
A fast feedback loop for writing SQL in Vim and visualizing Postgres EXPLAIN output
Configure Vim for React and TypeScript
Syntax highlight, tab complete, auto-fix, lint, and jump to definition, implementation, and references
Heroku Postgres Read Replica with Rails
Read and write to a Heroku Postgres database as primary and read from a follower in targeted call sites
Postgres concat_ws() Function
Use concat_ws() instead of concat() to avoid ugly output
Postgres \set Variable
In psql, set variables and reference them
Run SQL from Vim
Run SQL against a Postgres database from Vim
Format SQL in Vim
Format SQL on save in Vim
Heroku to Slack with AWS Lambda
When my production app processes change state on Heroku, I want to be notified in Slack
Deno
A secure runtime for JavaScript and TypeScript
Thin API Clients
When to access an API with a specialized library and when to write a custom thin client
Schedule Netlify Builds with GitHub Actions
Daily deploys with Netlify build hooks, GitHub Actions' scheduled workflows, and GitHub encrypted secrets
Pull Requests and Kanban
End-to-end with a kanban board, GitHub code review, continuous integration, and continuous delivery
Update a GitHub Fork
Keep it synced with the upstream repository
Block with /etc/hosts
Block ads, trackers, and malicious websites with /etc/hosts
Spell Check in Vim
Avoid mistakes when editing prose in Markdown files and Git commit messages
laptop.sh
My laptop repo sets up a macOS machine as a software development environment
Monorepo
How we organized our code into a monorepo at our startup and how it evolved over time
Process Model
Define Unix processes in a manifest named Procfile and use tools to manage those processes
.gitignore
Dirs and files matching the patterns defined in this file are ignored for git commits, ag searches, and fzf searches
Email from Rails with SES on EC2
Deliver email from a Ruby on Rails app using Amazon's Simple Email Service (SES) hosted on EC2
ASDF Version Manager
Set up and configure ASDF as a version manager for multiple programming languages
DNS to CDN to Origin
Rather than pointing DNS directly to an origin server, point it to a CDN that pulls content from the origin
Align Markdown Tables in Vim
Align GitHub-Flavored Markdown tables in Vim in a few quick keystrokes
Reduce Heroku Slug Size
Steps to resolve the 'Compiled slug size: 300.1M is too large (max is 300M)' error
Retention Curves
How to build a retention curve chart in Google Sheets from a Mixpanel tabular cohort report
Full Text Search with Postgres
Speed up Postgres full-text searches with a tsvector column as cache and trigger to keep the cache updated
Log and Alert on Heroku Routing Errors
Heroku routing errors don't reach error-tracking code in app processes, have to track with a logging service
Test Mock vs. Stub vs. Spy
Tradeoffs for unit tests that use mocks, stubs, or spies
North Star Metric
How many people get authentic value from our product?
Search Projects in Vim
Search a project for files, text, or word under cursor
Run Tests in Vim
Runs focused tests from Vim with a keystroke
Create Indexes Concurrently
Use Postgres' CONCURRENTLY option for CREATE INDEX to avoid locking writes to a table
Wrap Text in Vim
Wrap text to set textwidth with visual select and gq
Sort Lines in Vim
Sort lines alphabetically with visual select and :sort
Four-Phase Test
A pattern for Ruby unit tests (but not integration tests)
Decorators
Extend a Ruby object's responsibilities without subclassing
Pessimistic Operator
Stabilize Ruby dependencies with the pessimistic operator and Semantic Versioning
Config Block
Configure a Ruby library
Mystery Guest
An anti-pattern in Ruby tests that hides cause and effect