Now you can define uploading limits for clients (identified by IP address) by setting up quota and cycle params in.env file:
...
### Rate limiter params
# QUOTA is a number of images could be uploaded per target time CYCLE in seconds
# For example: not more 3 images per 60 seconds (quota=3, cycle=60)
RATE_LIMITER_QUOTA=3
RATE_LIMITER_CYCLE=60
#DISABLE_RATE_LIMITER=True