Building Credit Card Authorizers with Java
This course teaches building reliable credit card authorizers in Java, covering ISO 8583 parsing, TCP servers, concurrency, routing, fraud detection, error handling, security, logging, metrics, and deployment for scalable payment systems under real load.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Learn to create high-performance credit card authorizers in Java, starting with ISO 8583 basics and message handling, building low-latency TCP servers, tuning concurrency, designing routing and authorisation logic, integrating issuer and fraud systems, and adding security, logging, metrics, error management, and deployment for a robust prototype.
Elevify advantages
Develop skills
- Master ISO 8583 message parsing, building, validation, and testing in Java.
- Design efficient low-latency TCP servers for high-throughput payment processing.
- Develop credit card authorization logic including routing and response mapping.
- Optimise concurrent pipelines for decode, authorize, and encode operations.
- Implement production features like logging, metrics, security, and deployment.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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