Fail to distinguish alarm emails due to similar subject
Make alarm email subject different at length.
Redis OOM due to big keys
Frequently get big key -> hit network limit -> message backlog in buffer -> OOM
MySQL connection pool size too small causes deadlock
A small-sized connection pool (such as 1, 2) may cause deadlock.
Drafts 12/22
What strange and bizarre, yet irrefutable theories are you inventing in the room 你又在房间里发明什么稀奇古怪，但又令人无可反驳的理论
Yisheng's blog 