Heroku免费版限制
- SLEEPS AFTER 30 MINS OF INACTIVITY 30分钟无人访问就休眠
Verified accounts come with a monthly pool of 1000 Free dyno hours; unverified accounts receive 550. When a Free dyno is active, it draws from the pool; your free apps can run as long as there are dyno hours left in your monthly pool.- Wildcard, subdomain, and root domains