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Case Study / 07
KanbanTrell
Drag-and-drop task management application with board, list, and card features.
RoleFullstack Developer
Timeline2024
CategoryProductivity
Core Stack
ReactSupabase
[ 01 / The Challenge ]
Understanding the Problem & Core Constraints
KanbanTrell is a collaborative task organizer that mimics physical boards. Users can create projects, add column lists, and drag tasks across states, with real-time multiplayer updates powered by Supabase.
Key Constraint
Preventing screen flickering or cursor lag when dragging multiple cards across columns under heavy server payloads.
[ 02 / The Solution ]
Architectural Decisions & Core Implementation
Implemented Optimistic UI Updates inside TanStack Query to immediately move cards locally, reverting changes only if the server returns an error.
[ Performance & Results ]
1.
Immediate UI drag response (0ms latency)
2.
Real-time database sync in under 120ms
3.
Handles thousands of active boards
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