Bryan Glick reports on the behind the scenes IT efforts at Barclaycard.
Christmas is coming, and your credit cards are getting fat. The constant swiping of the plastic in your pocket brings seasonal joy for the retailers and humbug for your bank balance, but it’s also a major IT challenge for Barclaycard, the UK’s largest credit card provider. Last year, the company processed seven million transactions per day in the run-up to Christmas. The computers running the authorisation system are capable of handling more than 300 transactions per second.