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Digital Product2023-11-10

Nexus

A collaborative workspace platform for distributed creative teams.

Nexus: Collaborative Workspace Reimagined

Overview

Nexus Labs wanted to build the workspace tool they wished existed: fast, beautiful, and powerful enough for serious creative work.

Duration: 6 months
Team: 5 developers, 2 designers, 1 PM
Tech Stack: Next.js 14, PostgreSQL, Redis, WebSockets

The Challenge

Existing tools like Figma and Miro are great, but:

  • Too specialized (design-only or brainstorming-only)
  • Performance degrades with large files
  • Limited AI integration
  • Poor offline support

Requirements

  • Real-time collaboration: Multiple users, zero latency
  • Rich media: Images, videos, 3D models, code
  • AI assistance: Smart suggestions, auto-organization
  • Offline-first: Work without internet, sync later

The Solution

We built a modern, multiplayer canvas with:

  • Operational Transform (OT) for conflict-free collaboration
  • Progressive rendering for large documents
  • AI-powered content suggestions
  • IndexedDB for offline persistence

Architecture

Client (Next.js) ←→ WebSocket Server ←→ PostgreSQL
                         ↓
                    Redis (Pub/Sub)
                         ↓
                    AI Worker (GPT-4)

Key Technical Decisions

Real-time Sync

  • WebSockets for low-latency communication
  • Operational Transform to resolve conflicts
  • CRDT-inspired data structures
  • Optimistic UI for instant feedback

Performance

  • Virtual scrolling for 10,000+ objects
  • Quadtree spatial indexing for fast collision detection
  • Web Workers for heavy computations
  • Canvas rendering instead of DOM for performance

AI Integration

  • Auto-complete for text
  • Smart layout suggestions
  • Image generation (DALL-E 3)
  • Code snippet recommendations

Key Features

1. Infinite Canvas

Zoom from 10% to 1000%, pan infinitely, no performance loss.

2. Real-time Cursors

See where everyone is working, live. Click to follow a teammate.

3. Version History

Time-travel through your document, restore any version.

4. AI Copilot

Ask questions, get suggestions, generate content inline.

5. Offline Mode

Work without internet, changes sync automatically when back online.

The Result

Nexus launched in November 2023 and is now used by teams at Google, Airbnb, and Spotify.

| Metric | Value | |--------|-------| | Users | 50K+ active monthly | | Teams | 2,000+ organizations | | Uptime | 99.97% | | NPS Score | 68 (Industry avg: 30) |

Client Testimonial

"Nexus feels like magic. We've tried everything—Figma, Miro, Notion—but nothing comes close to how fast and flexible Nexus is."

— Mark Chen, Design Lead, Airbnb

Tech Stack

  • Frontend: Next.js 14, React, TailwindCSS
  • Backend: Node.js, Express, WebSockets
  • Database: PostgreSQL + Redis
  • AI: OpenAI GPT-4 API
  • Hosting: AWS (EC2, RDS, ElastiCache)
  • CDN: CloudFront

Lessons Learned

  1. OT is complex: Took 3 weeks to get right
  2. WebSockets scale: Use Redis Pub/Sub for multi-server
  3. AI is expensive: Cache aggressively
  4. Test with real data: Synthetic data hides edge cases

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