- Description about the talk
- We introduce `debug.gem` ([ruby/debug: Debugging functionality for Ruby](https://github.com/ruby/debug)), the fastest debugger for Ruby and how to make it.
Existing debuggers have performance penalty to control execution. `debug.gem` uses recently introduced `TracePoint` features to mange execution and there is (almost) no penalties.
`debug.gem` has more interesting features:
* Remote debugging
* IDE (VSCode) Integration
* Thread/Ractor support
* and more
In this presentation, we introduce newly created `debug.gem` and show the tricks to make the *fastest* debugger.