TECHNOLOGY STACK

/// SPECIFICATION_DOCUMENT

/// 01_LANGUAGES

Primary backend language. Service mesh, frameworks, CLI tooling. Foundation of Chaki and Mercurius.

[ STABLE ]

KOTLIN

JVM ecosystem. Spring Boot microservices. Multi-tenant auth APIs. High-throughput event processing.

[ STABLE ]

JAVA

Spring Boot enterprise services. Legacy migration targets. Battle-tested JVM reliability.

[ STABLE ]

/// 02_FRAMEWORKS

SPRING_BOOT

Primary JVM microservice framework. Auto-configuration, actuator health checks, embedded servers.

[ STABLE ]

UBER_FX

Go dependency injection framework. Foundation of Chaki — auto-configuration, lifecycle hooks, modular wiring.

[ STABLE ]

REACT

Frontend library for back-office tools, portfolio site, and internal dashboards. SSR with React Router.

[ STABLE ]

GRPC

Service-to-service communication. Bidirectional streaming in Mercurius. Low-latency binary protocol.

[ STABLE ]

/// 03_MESSAGING

APACHE_KAFKA

Event-driven backbone. High-throughput streaming. CDC source and event sourcing at 1.2M+ RPM.

[ STABLE ]

GRPC_STREAMING

Bidirectional pub-sub messaging in Mercurius. Low-latency alternative for internal service events.

[ EXPERIMENTAL ]

/// 04_DATABASES

POSTGRESQL

Primary relational database. CDC source with logical replication. Transactional consistency.

[ STABLE ]

ELASTICSEARCH

Full-text search and analytics engine. Log aggregation. Q&A domain optimized queries.

[ STABLE ]

COUCHBASE

Distributed NoSQL document database. Low-latency key-value workloads. Multi-cluster deployment.

[ STABLE ]

MONGODB

Document database for specific services. Migrating workloads to PostgreSQL and Couchbase.

[ MIGRATING ]

/// 05_DEVOPS

DOCKER

Containerization for all services. Multi-stage builds. Consistent dev-to-prod environments.

[ STABLE ]

KUBERNETES

Production container orchestration. Horizontal scaling, rolling updates, service discovery.

[ STABLE ]

GITHUB_ACTIONS

CI/CD pipeline automation. Testing, building, deploying with matrix builds and caching.

[ STABLE ]

JENKINS

Legacy CI/CD server. Migrating pipelines to GitHub Actions for faster feedback loops.

[ MIGRATING ]

CLOUDFLARE

CDN, DNS, Workers edge compute. Portfolio site deployment and content delivery.

[ STABLE ]

/// 06_OBSERVABILITY

GRAFANA

Metrics visualization and dashboards. System health monitoring. Campaign traffic observability.

[ STABLE ]

PROMETHEUS

Metrics collection and alerting. Time-series database. Infrastructure and application metrics.

[ STABLE ]

OPENTELEMETRY

Distributed tracing specification. Integrated into Chaki framework. Cross-service request tracing.

[ STABLE ]

/// 07_PATTERNS

CQRS

Command Query Responsibility Segregation. Separate read/write models for optimized query performance.

[ STABLE ]

CDC

Change Data Capture async data flows. PostgreSQL logical replication to Kafka for downstream consumers.

[ STABLE ]

EVENT_DRIVEN_ARCHITECTURE

Kafka event sourcing backbone. Asynchronous service communication. Campaign-scale throughput.

[ STABLE ]

MICROSERVICES

Distributed decomposition of monoliths. Independent deployability. Multi-tenant architectures.

[ STABLE ]