AssetCare · assetcare.janaka.me · source on request · September 2026
A complete asset-maintenance application I took from architecture to a live Kubernetes deployment in my own time: Angular 22 in front of Spring Boot 4.1 on Java 25, PostgreSQL 18 with Liquibase, Keycloak 26 for identity, S3-compatible object storage, OpenTelemetry instrumentation with a Prometheus, Grafana, Loki and Tempo stack, tests at every level (Testcontainers, ArchUnit, Playwright, k6), signed multi-arch images released through GitHub Actions, a Helm chart on K3s, and a Hetzner Cloud server created from Terraform. AI accelerated the engineering; architecture, security and verification stayed with me.
Java 25Spring Boot 4.1Spring Security 7 · OAuth2 / OIDCHibernate 7PostgreSQL 18LiquibaseAngular 22Keycloak 26MinIODocker · multi-archKubernetes (K3s)HelmTerraformTraefik · cert-managerGitHub ActionsOpenTelemetryPrometheus · GrafanaLoki · TempoTestcontainersArchUnitPlaywrightk6Trivy · cosign · SBOM
BlitzMath · bm.janaka.me · October 2026
A live maths game for classrooms and families, on a different stack from AssetCare by design: a React 19 and TypeScript progressive web app on Cloudflare Workers, with one Durable Object per game room as the server-side referee for questions, clock and scores over WebSockets. No database and no accounts. The game core is pure TypeScript, shared by server and browser and covered by unit tests, and a full live game is played end to end by robot players after each deploy. English, German, French and Italian.
TypeScriptReact 19ViteCloudflare WorkersDurable ObjectsWebSocketsPWA · offlineVitest
Also open source: MP3 Alarm Clock, a single-file Python desktop app for macOS, Windows and Linux (MIT).
