Cutover Diary: The Leftovers When You Move an AI Workflow to Free Infrastructure

说明与用途

将 AI 审核机器人迁移到免费基础设施需要仔细规划：冻结旧配置、阴影模式测试、逐步流量切换。解决重试逻辑、提示模板和调度等遗留问题后，迁移成功。

问题

Migrating an AI review bot from a paid endpoint and VPS to free infrastructure introduced hidden issues such as leftover retry logic, prompt formatting, and scheduling mismatches.

结果

The migration succeeded after addressing three key leftovers: reworked retry logic, prompt template, and cron schedule. Shadow mode revealed prompt formatting differences, and a week of overlap ensured stability before decommissioning the paid endpoint.

工作流

• Freeze old configuration and snapshot prompt, retry policy, and server setup
• Run shadow mode to compare outputs of old and new pipelines
• Flip traffic for a single repository to test live performance
• Keep old server alive for seven days as rollback target
• Delete old endpoint after a full week of successful reviews

证据

The plan had five steps, and the order matters because each one gives you a way back

来源

Three things did not migrate cleanly, and each one is a lesson about free infrastructure

来源