Overview

The Comment Service handles all commenting functionality, including rich-text comments, @mentions, file attachments, and reactions.

Key Responsibilities

• Create and manage comments on tasks
• Parse and handle @mentions
• Support rich-text formatting (Markdown)
• Handle file attachments
• Manage emoji reactions
• Support comment threading
• Real-time comment delivery

Technical Details

Technology Stack:

• Runtime: Node.js 20
• Framework: Express.js + Socket.io
• Database: MongoDB (flexible comment schema)
• Storage: AWS S3 (attachments)
• Message Broker: Apache Kafka

SLA:

• Availability: 99.95%
• Response Time: < 150ms (p95)
• WebSocket Latency: < 50ms