Building cloud-based microservices can be a challenge when the system of record is a relational database residing on an on-premise mainframe. The challenge lies in the ability to efficiently and cost-effectively access the ever-increasing amount of data. Express Scripts is reimagining its data architecture to bring best-in-class user experience and provide the foundation of next-generation applications.
This talk will showcase how Kafka plays a key role within Express Scripts’ transformation from mainframe to a microservice-based ecosystem, ensuring data integrity between two worlds. It will discuss how change data capture (CDC) is leveraged to stream data changes to Kafka, allowing us to build a low-latency data sync pipeline. We will describe how we achieve transactional consistency by collapsing all events that belong together onto a single topic, yet have the ability to scale out to meet the real time SLAs and low-latency requirements through means of partitions. We will share our Kafka Streams configuration to handle the data transformation workload. We will discuss our overall Kafka cluster footprint, configuration and security measures.
Express Scripts Holding Company is an American Fortune 100 company. As of 2018, the company is the 25th largest in the U.S. as well as one of the largest pharmacy benefit management organizations in the U.S. Customers rely on 24/7 access to our services, and need the ability to interact with our systems in real time via various channels such as web and mobile. Sharing our mainframe t0 microservices migration journey, our experiences and lessons learned would be beneficial to other companies venturing on a similar path.