注意：这里用 Thread.sleep 模拟延迟，实际项目里换成真正的 Redis 查询、数据库查询和 HTTP 调用即可。
- change_plan: string[]
，详情可参考服务器推荐
Yeah, somehow what I remember, and I think that’s just distorted, was that Twisted was all Glyph’s work.
Марк Успенский (Редактор отдела «Путешествия»)