# Guanchen

> Guanchen - technology consulting for resilient systems across cloud, APIs, integration, observability, and operations.

This is the documentation site for Guanchen at https://guanchen.nl

## Articles

- [Rented Tokens](https://guanchen.nl/articles/rented-tokens.md): Why the context window is a lease rather than memory, and how to choose agent memory that keeps durable state portable, inspectable, and sovereign.
- [Systems that Listen](https://guanchen.nl/articles/systems-that-listen.md): A view of future systems through data spaces and autonomous operations: intent meets boundaries, action meets feedback, and learning changes what happens next.
- [Managed Freedom](https://guanchen.nl/articles/managed-freedom.md): How to choose a European cloud foundation that manages infrastructure without taking over the architecture.
- [Workflows that Remember](https://guanchen.nl/articles/workflows-that-remember.md): Choosing a sovereign workflow engine for the rare processes that truly need durable memory, visible recovery, and code-first control.
- [Gateway Systems](https://guanchen.nl/articles/gateway-systems.md): How to think about gateways as traffic boundaries, not only API management products, and where Kubernetes Gateway API changes the model.
- [The API Front Door](https://guanchen.nl/articles/the-api-front-door.md): Choosing an API portal that keeps discovery useful, definitions protected, and gateway choices separate.
- [Lightweight Queueing](https://guanchen.nl/articles/lightweight-queueing.md): How to choose queueing that keeps work durable, visible, and close to the system before reaching for a broker or managed messaging platform.
- [Eventing with CloudEvents](https://guanchen.nl/articles/eventing-with-cloudevents.md): Why CloudEvents gives event-driven systems a shared shape across brokers, services, clouds, integrations, and teams.
- [Service Discovery](https://guanchen.nl/articles/service-discovery.md): Why portals still matter, and why open discovery formats like APIs.json may define their next phase.
- [Observability by Signal](https://guanchen.nl/articles/observability-by-signal.md): How logging evolved from text files into OpenTelemetry, and why portable signals are the future of understanding systems.
- [Federated API Security](https://guanchen.nl/articles/federated-api-security.md): Why secure APIs need identity, trust, and authorization that can move across organizational boundaries.
- [Queueing Matters](https://guanchen.nl/articles/queueing-matters.md): How queues shaped technology, why they matter for decoupling, and where queueing is headed next.
- [The Shape of Traffic](https://guanchen.nl/articles/the-shape-of-traffic.md): Why the way traffic flows into systems says so much about control, resilience, and the future of technology.
- [Decoupled by Design](https://guanchen.nl/articles/decoupled-by-design.md): What the Bank API reference project suggests about independence, trust, and the future of technology design.
- [Open Source Sovereignty](https://guanchen.nl/articles/open-source-sovereignty.md): Why organizations need control over their software, data, and operating model in an unstable world.
- [OpenAPI-first MCP](https://guanchen.nl/articles/openapi-first-mcp.md): A contract-first argument for generating MCP servers from OpenAPI instead of rebuilding integration logic by hand.