Dynamic & Proud
summary
Argues dynamic systems scale better for complex finance domains, showing challenger-bank case studies where new financial products onboard with JSON Schema and no code releases, UI and validators generated from the same spec, and trading rules derived from it. Describes a layered, iterative schema as code workflow that stores forms and facts across time in a bitemporal immutable database (XTDB), letting schemas evolve while queries remain auditable and migrations become rare.
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chapters (11)
- 0:00Intro
- 1:08Statically typed vs dynamically typed
- 6:24Benefits of dynamically typed
- 8:38Static or dynamic?
- 11:43Why does a domain evolve?
- 16:01Statically vs dynamically typed system
- 17:22JSON schema
- 22:40Other kinds of schema
- 25:30An architectural "stack" for dynamic systems
- 28:15Conclusion
- 29:50Outro
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