Kenny ShiOnline vs Offline in EMVWhen EMV card processing is discussed, one confusing usage of terminology is Online vs Offline. They mean different things in different…May 13, 2020May 13, 2020
Kenny ShiExamining Your EMV Chip CardsNow we are a few years into EMV mandates in the US, we all have one or more EMV chip cards in our wallet and have used them in stores.May 13, 2020May 13, 2020
Kenny ShiMysterious Daylight Saving Time in MySQLDST 2020 just kicked in last Sunday. For the longest time, I have been fancied what happens during that 1 hour, you know, when we turn the…Mar 17, 20201Mar 17, 20201
Kenny ShiTIMESTAMP Comparison with Time Zone in MySQLHere is an imaginary table with TIMESTAMP indexed:Mar 13, 2020Mar 13, 2020