Zeitwerk: A new code loader for Ruby
summary
Zeitwerk is a gem that replaces classic autoloader in Rails 6 and actually implements module-based autoloading, eager loading and optional reloading with a small memory footprint and no dependencies. It wires autoloads from files, uses absolute paths, and handles namespaces by defining dummy modules and registering loaders; implementation uses TracePoint and intercepted require hacks plus modest Ruby changes; Rails 6 integrates it automatically and it works thread‑safely. no dependencies, pure Ruby API
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chapters (11)
- 0:00Intro
- 1:05Main features
- 3:34Project structure
- 15:08Require
- 15:42Global Side Effect
- 19:15Constants
- 26:00Nesting
- 33:08Autoloading
- 39:46Module Autoloading
- 41:21Modulo to Log
- 53:53Integration
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