Tech Tales

• ruby
• jit

Ruby's JIT Journey: From MJIT to YJIT to ZJIT

A walkthrough of Ruby’s JIT history and the design ideas behind MJIT, YJIT, and ZJIT

• keycloak
• sso
• single-sign-on
• keycloak - clients
• keycloak - groups

Map Client Roles to User Groups in Keycloak

This guide provides a step-by-step process for administrators who want to streamline client-role-based access management in their Keycloak setup and access user roles from access token in rails app.

• keycloak
• sso
• single-sign-on
• rubyonrails
• rails

Keycloak Single Sign-On Integration with Rails using omniauth-keycloak gem

This guide walks you through setting up Keycloak locally using Docker, creating a realm, user, client and integrating Keycloak with a Rails application using the omniauth-keycloak gem for single sign-on (SSO).

• ruby on rails
• rails
• aws
• s3 bucket
• active storage

Using AWS S3 with Rails ActiveStorage for File Uploads

Guide to Setting Up AWS S3 Bucket for Rails Active Storage File Uploads

• ruby
• gems
• package management

Diving into the internals of Gem packaging

A deep dive into RubyGems internals, gem anatomy, and how gem packaging enables distribution and installation.

• ruby

Sorbet - A static type checker for Ruby

Adopting and incorporating a gradual type system for Ruby

• ruby

Ruby 2.5 adds KeyError#receiver and KeyError#key

Learn about KeyError#receiver which returns receiver associated with the KeyError object & KeyError#key returns the key which caused the exception

• ruby

Ruby 2.6 added options to Exception#full_message

Learn about options which Expection#full_message accepts

• ruby

Frozen middleware with Rack freeze

Learn about freezing middleware with rack-freeze

• ruby

RubySpec for Tracepoint

Learn more about ruby by contributing to RubySpec

• ruby
• cpu
• profiler

DIY Ruby CPU profiling - Part IV

Ruby's TracePoint API is very powerful for building custom profilers. As the final post of the DIY CPU profiler series, this post will introduce how to get method runtime statistics and generate relevant graphs.

• ruby
• cpu
• profiler

DIY Ruby CPU profiling - Part III

Ruby's TracePoint API is very powerful for building custom profilers. In this post I will talk about hooking into Ruby code execution life cycle using this API

• ruby
• cpu
• profiler

DIY Ruby CPU profiling - Part II

Ruby's TracePoint API is very powerful for building custom profilers. In this post I will talk about Wall time and CPU time, and how to measure them for Ruby programs.

• ruby
• cpu
• profiler

DIY Ruby CPU profiling - Part I

Ruby's TracePoint API is very powerful and allows us to write custom profiling code without slowing down the execution of programs. In this post, I will introduce CPU profiling and 2 strategies to write one.

• json
• api
• ruby

An Introduction to JSON Schema

JSON schema can help bring order to handling complex JSON interactions in APIs. For instance, you can avoid checking the types of incoming JSON and rely on JSON schema to do the validation. This post talks about similar usecases.

• ruby
• rails
• tips

Random Ruby tips from trenches #1

• emacs
• osx
• ruby
• rails

Setting up Emacs as Ruby development environment on OSX

• ruby
• productivity
• gems

Introducing Invoker - Manage processes in development envionment

Invoker is a utility we wrote to ease setting up of local development environments and top level .dev domains. Read on to know how to use it.

• ruby
• dtrace
• profiling
• rails

Profile Ruby 2.0 apps using DTrace - part 2

Ruby 2.0 and above has in-built support for DTrace hooks. This lets us profile Ruby programs. In this post, I'll go into the details of the features of DTrace.

• vim
• rubymotion

Vim tab completion for RubyMotion

• ruby
• dtrace
• profiling
• rails

Profile Ruby 2.0 apps using DTrace - Part 1

Ruby 2.0 and above has in-built support for DTrace hooks. This lets us profile Ruby programs. In this post, I'll introduce DTrace and how to add DTrace probes to a Ruby program.

• bundler
• rails
• ruby

Bundler

• osx
• rvm
• ruby
• mountain_lion

Upgrading to Mountain Lion and your development environment

A nearly step-by-step guide to upgrade to Mountain Lion, and setting up a Ruby development environment

• ruby
• rails
• gems

The kitchen sink libraries

The problem with kitchen sink libraries is feature creep. Sometimes all we need are small libraries that are easily readable.