My step great grandmother is currently the oldest in the UK, the family had to take her car keys off her when she turned 100, she wasn’t best pleased about it.
It’s a shame it’s probably going to take another 10 years before any of the banks actually migrate to ISO20022 (if it ever happens) SwiftMT conversion software is currently the big sell so they don’t have to rewrite / build everything they already have.
The delay is 1s for placing bets inplay on racing, you are correct in regards to zero delay on cancellations. The advantage is simply down to latency and being ahead of everyone (except GPS users) in an event where probabilities move very fast. A lot (maybe the majority) is liquidity provided by automated systems or ’keep’ bets placed before the race where the user has no intention to cancel.
I use yara for real time screening in Django rest and it’s super fast and easy, Airbnb open sourced binary alert which is a cool serverless implementation.
https://join.slack.com/t/betcode-org/shared_invite/zt-2uer9n...