~/talk

Electric Clojure Differential Dataflow for UI (KEYNOTE)

Talkat LambdaConf 2025 · 2025-05-12..05-13· [frontend-architecture]
slides:none on file

Electric Clojure claims fullstack UI code compiles to a shared DAG that injects websocket streaming diffs so collections are a stream of change sets not whole payloads the DOM layer is ~500 lines and the canonical demo is a 12 line fullstack example that marks server vs client and runs without React or a virtual DOM the system streams robot telemetry at 20 Hz with replay at 40x and uses offloadable cancelable queries and diff squash to keep the UI responsive.

AI-written summary · about

  1. 0:00Introduction
  2. 1:55Electric Clojure
  3. 3:58Reactivity and DOM rendering
  4. 6:49Concurrency and DAG
  5. 8:14Scalability problems
  6. 8:35File system traversal demo
  7. 11:21Process supervision
  8. 13:30Functional effects and purity
  9. 14:13Query cancellation
  10. 17:04Lambda transparency
  11. 19:07TodoMVC as a function
  12. 21:41Dependency injection
  13. 21:58Motivating differential dataflow
  14. 22:21Diffing collections
  15. 24:49Dataflow for large datasets
  16. 25:30Back pressure
  17. 26:53Virtual scroll
  18. 28:43Chat app reconciliation
  19. 29:44Optimistic updates
  20. 31:09Conclusion
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