Andy Bailey takes us behind the scenes of FastDecimal, his lean, SIMD-friendly spin on BigDecimal (scaled to 4 with a Long), tailored for financial use cases. By trading off range for speed and using JUnit tests plus JMH benchmarks, he’s measuring just how far a handcrafted, AI-powered approach can go.
In the talk you’ll get his full methodology, hear about the happy surprises (and the head-scratching pitfalls), and maybe even catch some live coding (or “live prompting”) as he tweaks FastDecimal on the fly and fields audience questions.
Watch on YouTube
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