rate_limit

rate_limit limits datagrams per second of each client IP with a token bucket. Datagrams over the limit are dropped. Use it in front of dns to reduce amplification abuse.

server:
  udp:
    middlewares:
      limit:
        rate_limit:
          rate: 50
          burst: 100

Field	Default	Description
rate		Allowed datagrams per second. Required.
burst	max(1, rate)	Datagrams allowed at once.