transactions per second in database increasing rapidly

[changhisu]

Currently, we have 1000 devices online and are running into a strange problem using pyddns.
The number of transactions per second in the database will rise rapidly, from 0 to 10,000 in five minutes.
After that, we will be unable to log in to pyddns web, and using the update IP API will respond with FATAL: sorry, too many clients already,
It seems that there is a problem with Python's API access to the postgresQL database.
what do I do? Any suggestions are welcome