¶07 - Collaboration
Design under the spotlight.
That's an LLD interview.
Real LLD interviews are observed events. Collaboration lets you practice exactly that dynamic - invite a teammate or mentor, design while they watch, and get live @mention feedback. No refresh. No lag.
@Deepak shouldn't this be composition, not aggregation?
∞
collaborators (Ultimate)
0
refreshes needed
2
roles - viewer & editor
ws
WebSocket real-time sync
§01 - Featuring
Everything you need for a real design session with others.
§02 - Three acts
Three ways engineers use collaboration for LLD prep.
Act I - Most popular
The Mock Interview
Design under observation. Get feedback in real time.
One person designs on the canvas - timed, with Interview Mode - while a friend or mentor watches via a Viewer link and leaves feedback through @mention comments. Identical to a real interview observation format. The observer can't modify the canvas, but their presence and comments are felt in real time.
You
Designer · Editor
Mentor
Observer · Viewer
Act II - Teams
The Design Review
The whole team. The same canvas. No PNG exports.
Share a diagram with your tech team. Everyone joins as a Viewer or Editor. Comments, annotations, and design changes happen in real time - no need to export a PNG and paste it into Slack. Async feedback and live discussion in the same thread. The canvas is the single source of truth.
You
Owner · Editor
Team
Reviewers · Mixed roles
Act III - Mentorship
The Guided Session
A senior engineer, same canvas, guiding in real time.
A senior engineer joins as an Editor alongside a junior. They can guide by adding nodes, correcting relationships, and leaving detailed comments - working on exactly the same canvas, together, without friction or lag. No screenshare, no out-of-sync copies.
Junior
Learner · Editor
Senior
Guide · Editor
§03 - How it works
Built on WebSockets for zero-latency sync.
Create invite
Enter email, pick Editor or Viewer role. Invitation sent immediately.
Collaborator accepts
They open the link, authenticate, and join the canvas.
Live session
Cursors appear, edits sync in real time via WebSocket.
Comment and review
@mention comments appear in all panels instantly.
FAQ
Questions people ask
Related features
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