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Devcon App (legacy, Devcon SEA 2024)

Conference app used at Devcon SEA @ app.devcon.org. Kept for archival purposes and UX reference; Devcon 8 uses event-app instead.

Install and run

pnpm install   # from the repo root
pnpm dev

Optional: RECOIL_DUPLICATE_ATOM_KEY_CHECKING_ENABLED=false in .env to remove some warnings.

Devcon API

The devcon app is served by the devcon api (api.devcon.org). For outside contributors: running the API locally is not recommended/difficult, as it requires a lot of setup.

PWA cache/install strategy

  • Precache the app skeleton (basic html/js/css; layout, header, footer, etc.); this allows for fast installation time
  • Cache event data at runtime because these datasets are huge (20-30mb) - if these were precached it would extend the precache step significantly, making it very hard to ship updates fast and reliably
  • Event data is permanently cached by the service worker using a "version identifier", which is retrievable via the devcon api - whenever event data changes on the backend, the version returned by the devcon api will increment/change - the client can then ping this "version endpoint" instead of the underlying data to efficiently check for updates - if the client version is different from the backend version, the client can then redownload all data.

More context: docs/notes.md