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004 — Stack

Technical Focus

Production-proven toolchain Java · AWS · Kafka · Spring
Core Language & Frameworks

The primary toolchain — used on every project, production-hardened over 20 years.

Java 21 Spring Boot Spring Cloud Spring Security Spring Data Spring Actuator Maven Gradle JUnit 5 Mockito Testcontainers AssertJ
Messaging & Streaming

Event-driven infrastructure for real-time pipelines, trading feeds, and async communication.

Apache Kafka AWS SNS / SQS Betfair Streaming API RabbitMQ TA4J Spring Kafka WebSockets
Cloud & Infrastructure

AWS-native deployment and infrastructure-as-code. Designed to be cost-efficient and operationally simple.

AWS CDK AWS Lambda AWS S3 DynamoDB API Gateway ECS / Fargate Docker GitHub Actions Jenkins Terraform Kubernetes
Data

Persistence and query layers — relational, document, and cache, chosen for the problem not the trend.

PostgreSQL MongoDB Redis MS SQL Server Hibernate Spring Data JPA Flyway Apache Druid
Observability

If it's in production, it must be measurable. Metrics, tracing, and alerting from day one.

Micrometer Prometheus Grafana Spring Actuator Resilience4j Zipkin ELK Stack

See how this stack is applied in real projects.

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