It is so important that you have flexibility with any positions that you might take, whether that be on exchanges or with bookmakers. No exchange or bookmaker ever has 100% uptime. You have to make sure any crash doesn’t catch you out.
Some of it will depend on what you are trying to do in terms of strategies but if you are trading in and out of positions on say Betfair you have to have money available and ready to go on other exchanges if the worst case does happen.
Betfair and other sites wont accept any liability for crashes so you will have no one to blame but yourself. You also have to realise that if Betfair goes down a lot of the liquidity on say Betdaq will disappear. You have to adjust accordingly.
I have heard of so many horror stories over the years of people using far too large a % of their betting bank to trade. Then get stuck with positions they cant trade because the site is down and then the bet losing. Some win but you don’t hear about those!
Also, be sensible in that if the site is sticky and there have been issues earlier in the day then the chances of a crash are so much higher. On a day like the Grand National expect problems. Adjust accordingly.
Crashes can happen for any reason although one that really sticks in the mind was one at Betfair. When the site was originally built a maximum bet number had to be put in. Some crazy number like a billion was used. The site crashed one day as that number was hit.
It can happen for any reason. Plan accordingly and definitely don’t moan that you haven’t been warned.