Rolling out digital receipts on GCP infrastructure

In this talk we will give an overview of how one of the largest digital receipts projects in Austria was implemented on top of GCP infrastructure. We will touch upon the challenges of scale, load balancing and latency to meet regulatory requirements and will look at advanced data and analytics capabilities that allow us to bring the best experience to customers in everyday shopping.

Transcript

2. Do it RIGHT. 10 Agenda
3. Do it RIGHT. 11 Agenda 1. Transactions at scale – the numbers 2. A big-picture architecture 3. GCP components
4. Do it RIGHT. 12 How many of you use the Jö card?
5. Do it RIGHT. 13 01 TRANSACTIONS AT SCALE
6. Do it RIGHT. 14 # • Over 2000 stores • Different brands • BILLA, Penny, ADEG, BIPA How big is the REWE market in AT?
7. Do it RIGHT. 15 # • Over 150km worth of paper • The distance between Vienna and Linz • Latency limits on processing! How many digital receipts are needed
8. Do it RIGHT. 16 # • Over 1 500 000 transactions in 24 hours • Peak at 60 requests per second How many transactions do we process?
9. Do it RIGHT. 17 02 THE ARCHITECTURE
10. Do it RIGHT. 18 # What does it all look like?
11. Do it RIGHT. 19 03 GOOGLE INFRASTRUCTURE
12. Do it RIGHT. 20 # • Layer 7 load balancer (HTTPS) • Layer 4 load balancer (TCP/IP) • VPN Tunnel • VPC setup Load balancing & Networking
13. Do it RIGHT. 21 # • Legal requirements for storage Storage
14. Do it RIGHT. 22 # • Managed Kubernetes • Workload identity • Autoscaling • Pod Disruption budget GKE
15. Do it RIGHT. 23 # • API generated with OpenAPI • Routing • Authentication and authorization • Observability • Rate limiting Cloud Endpoints and Istio
16. Do it RIGHT. 24 # Reminder
17. Do it RIGHT. 25 # • Logging • Tracing • Monitoring • Prometheus • Grafana Observability
18. Do it RIGHT. 26 # • Near-real time data • Access to advanced analytics capabilities Analytics
19. Do it RIGHT. 27 # • Over 2000 stores • Over 1,6M transactions a day • Regulatory compliance • Scale at peak hours Successful rollout
20. Do it RIGHT. 28 THANK YOU!