Limitation of Everything

Free Usage Limit

AWS

https://aws.amazon.com/tw/free/

https://aws.amazon.com/free/faqs/?nc1=h_ls

EC2 CPU Credits

for t2.micro, the average CPU utilization for 24 hours is 12% CPU utilization

30 credits + 6 earn credits per hour * 24 hours = 174 credits a day 174 credits / 24 hours = 7.25 credits per hour 7.25 credits * 10 CPU utilization / 6 credits = 12% CPU utilization

CPU Credits@AWS User Guide for Linux Instances

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/t2-instances.html#t2-instances-cpu-credits

Ptt

80 QPS for stable

Line

• Line Notify
  • https://notify-bot.line.me/doc/en/
• Line Message API
  • https://devdocs.line.me/en/#common-specifications

Messenger

https://developers.facebook.com/docs/graph-api/advanced/rate-limiting

Telegram

https://core.telegram.org/bots/faq#broadcasting-to-users

Mailgun

https://www.mailgun.com/pricing

Message Characters Limit

• LINE: 2000
• Messeger: 640
• Telegram: 4096