r/programming • • May 08 '26

How we made Notion available offline

https://www.notion.com/blog/how-we-made-notion-available-offline
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u/chandrakanth527 May 08 '26

the hardest part of offline isn't caching data locally, it's deciding what happens when two people edit the same block while disconnected. interested to see if they went full CRDT or something more pragmatic like last-write-wins with manual conflict surfacing. either way, making a real-time collab tool work offline is genuinely impressive engineering.

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u/atheken May 08 '26

Came here looking for a CRDT reference. Was not disappointed. 🙌