Add Activity Heartbeat guidance for long-running serverless Activities

[lennessyy]

Summary

• Adds a tip admonition to the "Tuning for long-running Activities" section of the serverless workers encyclopedia page.
• Recommends using Activity Heartbeats when the longest Activity runtime exceeds half the invocation deadline, since the tuning constraints become difficult or impossible to meet.

Test plan

• Verify the tip renders correctly inside the list item
• Verify the Activity Heartbeat link resolves

🤖 Generated with Claude Code

┆Attachments: EDU-6278 Add Activity Heartbeat guidance for long-running serverless Activities

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
temporal-documentation	Ready	Preview, Comment	Apr 29, 2026 2:24am

[github-actions]

📖 Docs PR preview links

• Develop
  • Go SDK
    • Workers
      • Run a Worker
      • Serverless Workers
        • Serverless Workers on AWS Lambda
  • Python
    • Workers
      • Serverless Workers
        • Serverless Workers on AWS Lambda
  • Typescript
    • Workers
      • Serverless Workers
        • Serverless Workers on AWS Lambda
  • Worker performance
• Evaluate
  • Serverless Workers
    • Interactive Demo
• Production Deployment
  • Worker deployments
    • Serverless Workers
      • AWS Lambda
      • Self-hosted setup
• Serverless Workers
• Sticky Execution
• Task Queues
• Workers