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006 / WBOARD · 1st place · DSC WoW 2020 · Code Off Duty hackathon

wboard

A realtime collaborative whiteboard, built solo in a week. Won DSC WoW 2020.

Dithered hero for wboard
year
2020
role
sole engineer · team Void (Ashhar Ali led, Purujeet Singh tested)
stack
  • firebase
  • express
  • canvas
  • realtime
sponsors
Airmeet · Scaler Edge · Pratilipi

hardest problem

Streaming mousemove killed performance and N×N canvases didn't scale. One live canvas (active drawer) synced to DB on mouseup per stroke; every other participant sees a re-rendered snapshot at stroke boundaries. Felt live; cost almost nothing.

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