https://sazardev.github.io/software-architecture/en An engineering notebook on software architecture: in-depth articles, living diagrams and clear examples to design systems that scale. en Thu, 15 Oct 2026 00:00:00 GMT https://sazardev.github.io/software-architecture/en/docs/multiagente-cuando-un-agente-basta https://sazardev.github.io/software-architecture/en/docs/multiagente-cuando-un-agente-basta Thu, 15 Oct 2026 00:00:00 GMT System design When one agent with good tools is enough, what each link in a multi-agent system costs, and how to design contracts, traces and limits between agents. https://sazardev.github.io/software-architecture/en/docs/arquitectura-de-archivos-repos-grandes https://sazardev.github.io/software-architecture/en/docs/arquitectura-de-archivos-repos-grandes Thu, 15 Oct 2026 00:00:00 GMT System design How to organize a large repository tree so module boundaries are real: domain, public API, enforced dependency rules, ownership and build cost. https://sazardev.github.io/software-architecture/en/docs/contratos-de-eventos-versionados https://sazardev.github.io/software-architecture/en/docs/contratos-de-eventos-versionados Thu, 15 Oct 2026 00:00:00 GMT System design How to evolve events without breaking consumers: the schema as a contract, backward and forward compatibility, versioning and measured deprecation. https://sazardev.github.io/software-architecture/en/docs/renderizado-web-ssr-ssg-islands https://sazardev.github.io/software-architecture/en/docs/renderizado-web-ssr-ssg-islands Thu, 15 Oct 2026 00:00:00 GMT System design Where HTML is generated and when: CSR, SSR, SSG, ISR, streaming and islands, with their costs, selection criteria and common mistakes. https://sazardev.github.io/software-architecture/en/docs/caso-estudio-sistema-completo https://sazardev.github.io/software-architecture/en/docs/caso-estudio-sistema-completo Thu, 15 Oct 2026 00:00:00 GMT System design Illustrative case of a booking system: requirements, boundaries, data, integration, security and evolution, with each decision and its alternative. https://sazardev.github.io/software-architecture/en/docs/modelado-de-datos-normalizacion https://sazardev.github.io/software-architecture/en/docs/modelado-de-datos-normalizacion Thu, 15 Oct 2026 00:00:00 GMT System design How to model data after how it is read and written: normalization, deliberate copies with an owner, relational versus document models and query-driven design. https://sazardev.github.io/software-architecture/en/docs/evaluar-agentes-trayectorias https://sazardev.github.io/software-architecture/en/docs/evaluar-agentes-trayectorias Thu, 15 Oct 2026 00:00:00 GMT Practices & quality How to evaluate an agent that acts: trajectories versus final outcome, tasks with verifiable criteria, model-based judges, variance and evals in CI. https://sazardev.github.io/software-architecture/en/docs/identidad-y-permisos-de-agentes https://sazardev.github.io/software-architecture/en/docs/identidad-y-permisos-de-agentes Thu, 15 Oct 2026 00:00:00 GMT Practices & quality Which identity an AI agent uses, how to delegate narrow credentials, least privilege per action, secrets kept out of context, and revocation. https://sazardev.github.io/software-architecture/en/docs/codigo-generado-por-ia https://sazardev.github.io/software-architecture/en/docs/codigo-generado-por-ia Thu, 15 Oct 2026 00:00:00 GMT Practices & quality When a model writes the code, review, ownership and debt change: what to measure, who answers for a change and how to leave criteria. https://sazardev.github.io/software-architecture/en/docs/disenar-para-borrar https://sazardev.github.io/software-architecture/en/docs/disenar-para-borrar Thu, 15 Oct 2026 00:00:00 GMT Practices & quality Why code you cannot delete keeps costing you, and how to design boundaries, expiring flags and phased retirements you can reverse. https://sazardev.github.io/software-architecture/en/docs/cadena-de-suministro-software https://sazardev.github.io/software-architecture/en/docs/cadena-de-suministro-software Thu, 15 Oct 2026 00:00:00 GMT Practices & quality Architect's guide: which inventory, signatures and provenance to require, how to pin dependencies and which SLSA level to target, as of October 2026. https://sazardev.github.io/software-architecture/en/docs/ramas-y-entrega-continua https://sazardev.github.io/software-architecture/en/docs/ramas-y-entrega-continua Thu, 15 Oct 2026 00:00:00 GMT Practices & quality How the distance between code and trunk sets the cost of integration: trunk-based versus long branches, flags that expire, a healthy trunk and what to measure. https://sazardev.github.io/software-architecture/en/docs/chaos-engineering-game-days https://sazardev.github.io/software-architecture/en/docs/chaos-engineering-game-days Thu, 15 Oct 2026 00:00:00 GMT Practices & quality How to test resilience by injecting controlled faults: hypotheses, blast radius, stop conditions and game days with the teams that run the system. https://sazardev.github.io/software-architecture/en/docs/capacidad-y-pruebas-de-carga https://sazardev.github.io/software-architecture/en/docs/capacidad-y-pruebas-de-carga Thu, 15 Oct 2026 00:00:00 GMT Practices & quality How much capacity a system needs and how to check it with loads that resemble real traffic: load model, test types, measurement errors and headroom. https://sazardev.github.io/software-architecture/en/docs/trazas-distribuidas-opentelemetry https://sazardev.github.io/software-architecture/en/docs/trazas-distribuidas-opentelemetry Thu, 15 Oct 2026 00:00:00 GMT Practices & quality How to follow a request across services with traces, which data makes each span useful, and how to sample and govern telemetry with OpenTelemetry. https://sazardev.github.io/software-architecture/en/docs/infraestructura-como-codigo-gitops https://sazardev.github.io/software-architecture/en/docs/infraestructura-como-codigo-gitops Thu, 15 Oct 2026 00:00:00 GMT Practices & quality Reviewable infrastructure as code: remote state with locking, drift, versioned modules, least-privilege appliers and GitOps versus a push-based pipeline. https://sazardev.github.io/software-architecture/en/docs/mcp-y-a2a-integracion-de-herramientas https://sazardev.github.io/software-architecture/en/docs/mcp-y-a2a-integracion-de-herramientas Thu, 15 Oct 2026 00:00:00 GMT Trends What MCP and A2A standardize, what you gain and pay when adopting them, and when to expose a tool via MCP instead of a plain API. https://sazardev.github.io/software-architecture/en/docs/context-engineering-y-memoria-de-agentes https://sazardev.github.io/software-architecture/en/docs/context-engineering-y-memoria-de-agentes Thu, 15 Oct 2026 00:00:00 GMT Trends How to treat an agent's context as a scarce resource: what enters the window, when to compact, what to store as memory, and how to measure that it works. https://sazardev.github.io/software-architecture/en/docs/agentes-que-usan-interfaces https://sazardev.github.io/software-architecture/en/docs/agentes-que-usan-interfaces Thu, 15 Oct 2026 00:00:00 GMT Trends When an agent should drive a graphical interface instead of an API, what risks the page adds, and how to contain them with sandboxes, approvals and traces. https://sazardev.github.io/software-architecture/en/docs/modelos-pequenos-on-device-soberania https://sazardev.github.io/software-architecture/en/docs/modelos-pequenos-on-device-soberania Thu, 15 Oct 2026 00:00:00 GMT Trends When a small model on the device or in your own infrastructure beats a frontier API: latency, privacy, cost, sovereignty and what you give up. https://sazardev.github.io/software-architecture/en/docs/calidad-datos-para-ia https://sazardev.github.io/software-architecture/en/docs/calidad-datos-para-ia Thu, 15 Oct 2026 00:00:00 GMT Trends Data quality for models and RAG, synthetic data with its risks, and the licensing and consent framework that changes with jurisdiction. https://sazardev.github.io/software-architecture/en/docs/futuro-arquitectura-con-ia https://sazardev.github.io/software-architecture/en/docs/futuro-arquitectura-con-ia Thu, 15 Oct 2026 00:00:00 GMT Trends A forward look at 2027 to decide today: verified trends, labeled hypotheses, review signals and reversible decisions. https://sazardev.github.io/software-architecture/en/docs/costes-por-equipo-y-funcionalidad https://sazardev.github.io/software-architecture/en/docs/costes-por-equipo-y-funcionalidad Thu, 15 Oct 2026 00:00:00 GMT Cloud How to attribute cloud spend to teams and features: mandatory tags, shared-cost allocation and budget alerts that fire before the limit. https://sazardev.github.io/software-architecture/en/docs/kubernetes-cuando-si-cuando-no https://sazardev.github.io/software-architecture/en/docs/kubernetes-cuando-si-cuando-no Thu, 15 Oct 2026 00:00:00 GMT Cloud What Kubernetes actually solves, what operational cost it brings, and when a managed service, a PaaS or a well-run VM is the cheaper decision. https://sazardev.github.io/software-architecture/en/docs/trabajo-del-arquitecto-con-agentes https://sazardev.github.io/software-architecture/en/docs/trabajo-del-arquitecto-con-agentes Thu, 15 Oct 2026 00:00:00 GMT Decisions, processes and AI What changes in the architect role when teams work with AI agents: specifying, delegating with judgment, reviewing, and measuring flow honestly. https://sazardev.github.io/software-architecture/en/docs/librerias-internas-sin-infierno-versiones https://sazardev.github.io/software-architecture/en/docs/librerias-internas-sin-infierno-versiones Thu, 15 Oct 2026 00:00:00 GMT Decisions, processes and AI When to turn shared code into an internal library, when copying is better, and how to version and retire it so that every change is not an incident. https://sazardev.github.io/software-architecture/en/docs/complejidad-accidental-de-herramientas https://sazardev.github.io/software-architecture/en/docs/complejidad-accidental-de-herramientas Wed, 14 Oct 2026 00:00:00 GMT Foundations Telling apart the complexity of the problem from the complexity your frameworks and tools add, with diagnostic questions and four ways to reduce it. https://sazardev.github.io/software-architecture/en/docs/arquitecto-como-facilitador https://sazardev.github.io/software-architecture/en/docs/arquitecto-como-facilitador Wed, 14 Oct 2026 00:00:00 GMT Foundations How to influence without formal authority: when to decide yourself, when to consult and when to delegate, and how the team keeps ownership of its choices. https://sazardev.github.io/software-architecture/en/docs/capas-no-son-arquitectura https://sazardev.github.io/software-architecture/en/docs/capas-no-son-arquitectura Wed, 14 Oct 2026 00:00:00 GMT System design Why folders named after layers are not enough: the dependency rule, what each boundary may carry, and when extra layers add noise instead of protection. https://sazardev.github.io/software-architecture/en/docs/monolito-modular-primero https://sazardev.github.io/software-architecture/en/docs/monolito-modular-primero Wed, 14 Oct 2026 00:00:00 GMT System design Monolith or microservices is the wrong question. How to design boundaries inside one process and when extracting a service actually makes sense. https://sazardev.github.io/software-architecture/en/docs/coordinar-servicios-sin-2pc https://sazardev.github.io/software-architecture/en/docs/coordinar-servicios-sin-2pc Wed, 14 Oct 2026 00:00:00 GMT System design Sagas with compensations, the outbox pattern and idempotency for an operation that spans several services and can fail halfway through. https://sazardev.github.io/software-architecture/en/docs/cap-por-operacion https://sazardev.github.io/software-architecture/en/docs/cap-por-operacion Wed, 14 Oct 2026 00:00:00 GMT System design CAP and PACELC explained as per-operation decisions: what choosing consistency or availability means for a balance, a cart or a like counter. https://sazardev.github.io/software-architecture/en/docs/antes-de-escalar-la-cuenta https://sazardev.github.io/software-architecture/en/docs/antes-de-escalar-la-cuenta Wed, 14 Oct 2026 00:00:00 GMT System design Little's law, Amdahl's law and queueing to estimate concurrency and capacity before adding servers, with a full calculation from start to finish. https://sazardev.github.io/software-architecture/en/docs/migraciones-bd-sin-downtime https://sazardev.github.io/software-architecture/en/docs/migraciones-bd-sin-downtime Wed, 14 Oct 2026 00:00:00 GMT System design Expand and contract, backward-compatible schema changes and batched backfills to evolve a database without maintenance windows. https://sazardev.github.io/software-architecture/en/docs/legado-strangler-anticorrupcion https://sazardev.github.io/software-architecture/en/docs/legado-strangler-anticorrupcion Wed, 14 Oct 2026 00:00:00 GMT System design How to modernize a system you cannot rewrite: a strangler that redirects routes and an anti-corruption layer that protects the new model. https://sazardev.github.io/software-architecture/en/docs/micro-frontends-y-bff https://sazardev.github.io/software-architecture/en/docs/micro-frontends-y-bff Wed, 14 Oct 2026 00:00:00 GMT System design When to split the frontend into micro-frontends and when a BFF per channel is enough. Criteria on coupling, teams and the cost of coordinating deployments. https://sazardev.github.io/software-architecture/en/docs/tiempo-real-websockets-sse https://sazardev.github.io/software-architecture/en/docs/tiempo-real-websockets-sse Wed, 14 Oct 2026 00:00:00 GMT System design How to choose between SSE, WebSocket and queues to push data in real time: direction of the flow, number of clients and what happens when the connection drops. https://sazardev.github.io/software-architecture/en/docs/pagos-libro-mayor-ledger https://sazardev.github.io/software-architecture/en/docs/pagos-libro-mayor-ledger Wed, 14 Oct 2026 00:00:00 GMT System design Immutable double-entry postings, corrections by reversal, idempotent charges and reconciliation with the payment provider. https://sazardev.github.io/software-architecture/en/docs/persistencia-politica-elegir-bd https://sazardev.github.io/software-architecture/en/docs/persistencia-politica-elegir-bd Wed, 14 Oct 2026 00:00:00 GMT System design Before choosing a database, define reads and writes: which store type fits, when polyglot persistence pays off and what it costs to run. https://sazardev.github.io/software-architecture/en/docs/busqueda-en-aplicacion https://sazardev.github.io/software-architecture/en/docs/busqueda-en-aplicacion Wed, 14 Oct 2026 00:00:00 GMT System design When a database index is enough, when a dedicated inverted index pays off, and how to keep it in sync with the source without losing changes. https://sazardev.github.io/software-architecture/en/docs/notificaciones-push-correo-sms https://sazardev.github.io/software-architecture/en/docs/notificaciones-push-correo-sms Wed, 14 Oct 2026 00:00:00 GMT System design A decoupled notification service with one queue per channel, user preferences, deduplication and retries that avoid losses and reduce duplicates. https://sazardev.github.io/software-architecture/en/docs/arquitectura-extensible-plugins https://sazardev.github.io/software-architecture/en/docs/arquitectura-extensible-plugins Wed, 14 Oct 2026 00:00:00 GMT System design When to open a system to extensions, extension points with a stable contract, permissions and sandboxing, and versioning and deprecation of the plugin API. https://sazardev.github.io/software-architecture/en/docs/movil-offline-first-sincronizacion https://sazardev.github.io/software-architecture/en/docs/movil-offline-first-sincronizacion Wed, 14 Oct 2026 00:00:00 GMT System design How to design an app that writes locally first, syncs a queue of operations in order and resolves conflicts without losing the changes the user made. https://sazardev.github.io/software-architecture/en/docs/fitness-en-el-ci https://sazardev.github.io/software-architecture/en/docs/fitness-en-el-ci Wed, 14 Oct 2026 00:00:00 GMT Practices & quality How to turn an architecture rule into a check that fails the pipeline: a real ESLint example from this repository and the steps to start with one. https://sazardev.github.io/software-architecture/en/docs/reintentos-con-jitter https://sazardev.github.io/software-architecture/en/docs/reintentos-con-jitter Wed, 14 Oct 2026 00:00:00 GMT Practices & quality Why retries without jitter multiply an outage, and how to combine timeouts, backoff, retry budgets and circuit breakers. https://sazardev.github.io/software-architecture/en/docs/observabilidad-slo-presupuesto-error https://sazardev.github.io/software-architecture/en/docs/observabilidad-slo-presupuesto-error Wed, 14 Oct 2026 00:00:00 GMT Practices & quality How to measure what users experience with SLIs, set an SLO and use the error budget to decide when to ship faster and when to slow down. https://sazardev.github.io/software-architecture/en/docs/estrategia-de-pruebas-contratos https://sazardev.github.io/software-architecture/en/docs/estrategia-de-pruebas-contratos Wed, 14 Oct 2026 00:00:00 GMT Practices & quality What to test at each level of the pyramid, how contracts between services prevent broken integrations, and which architecture tests to keep. https://sazardev.github.io/software-architecture/en/docs/entrega-progresiva-flags-canary https://sazardev.github.io/software-architecture/en/docs/entrega-progresiva-flags-canary Wed, 14 Oct 2026 00:00:00 GMT Practices & quality Deploying without exposing every user: feature flags, canary and blue/green releases, and how to roll back without deploying again. https://sazardev.github.io/software-architecture/en/docs/modelado-de-amenazas-stride https://sazardev.github.io/software-architecture/en/docs/modelado-de-amenazas-stride Wed, 14 Oct 2026 00:00:00 GMT Practices & quality How to apply STRIDE to a real data flow diagram: trust boundaries, the six threat categories and a complete review example. https://sazardev.github.io/software-architecture/en/docs/privacidad-por-diseno-gdpr https://sazardev.github.io/software-architecture/en/docs/privacidad-por-diseno-gdpr Wed, 14 Oct 2026 00:00:00 GMT Practices & quality Minimization, legal basis, retention periods and deletion that reaches copies and backups: privacy as an architecture requirement. https://sazardev.github.io/software-architecture/en/docs/gestion-incidentes-postmortems https://sazardev.github.io/software-architecture/en/docs/gestion-incidentes-postmortems Wed, 14 Oct 2026 00:00:00 GMT Practices & quality Incident roles, severities, communication and blameless postmortems that end in owned, dated actions. https://sazardev.github.io/software-architecture/en/docs/gestion-secretos-claves https://sazardev.github.io/software-architecture/en/docs/gestion-secretos-claves Wed, 14 Oct 2026 00:00:00 GMT Practices & quality Why secrets never belong in the repository, how vaults and workload identities work, and how to rotate keys without taking the service down. https://sazardev.github.io/software-architecture/en/docs/arquitectura-de-datos-lakehouse https://sazardev.github.io/software-architecture/en/docs/arquitectura-de-datos-lakehouse Wed, 14 Oct 2026 00:00:00 GMT Trends When a data warehouse is enough, when an open-table lakehouse pays off, and when a data mesh makes sense as an organizational model. https://sazardev.github.io/software-architecture/en/docs/rag-y-evaluacion-continua https://sazardev.github.io/software-architecture/en/docs/rag-y-evaluacion-continua Wed, 14 Oct 2026 00:00:00 GMT Trends How to take a RAG system to production: indexing, retrieval and generation as a measurable chain, with metrics per stage and continuous evaluation. https://sazardev.github.io/software-architecture/en/docs/costo-de-inferencia https://sazardev.github.io/software-architecture/en/docs/costo-de-inferencia Wed, 14 Oct 2026 00:00:00 GMT Trends How to lower the cost per request of an LLM system: choose the smallest model that works, use caching with judgement and decide where inference runs. https://sazardev.github.io/software-architecture/en/docs/software-sostenible-carbono https://sazardev.github.io/software-architecture/en/docs/software-sostenible-carbono Wed, 14 Oct 2026 00:00:00 GMT Trends How to treat software carbon footprint as a quality attribute: what to measure, where it comes from and how to choose region, timing and compute with judgement. https://sazardev.github.io/software-architecture/en/docs/mlops-modelo-a-produccion https://sazardev.github.io/software-architecture/en/docs/mlops-modelo-a-produccion Wed, 14 Oct 2026 00:00:00 GMT Trends How to version data, code and models separately, deploy with shadow traffic and canaries, watch for drift, and decide when to retrain or retire a model. https://sazardev.github.io/software-architecture/en/docs/edge-computing-cdn https://sazardev.github.io/software-architecture/en/docs/edge-computing-cdn Wed, 14 Oct 2026 00:00:00 GMT Trends What a CDN is good at, what can run at the edge, how latency and caching are split, and when moving logic closer to users does not pay off. https://sazardev.github.io/software-architecture/en/docs/salida-de-la-nube https://sazardev.github.io/software-architecture/en/docs/salida-de-la-nube Wed, 14 Oct 2026 00:00:00 GMT Cloud Exit cost from a cloud provider is not evenly distributed: data usually weighs more than the API. How to estimate it and why you should test the plan. https://sazardev.github.io/software-architecture/en/docs/autorizacion-rbac-abac-rebac https://sazardev.github.io/software-architecture/en/docs/autorizacion-rbac-abac-rebac Wed, 14 Oct 2026 00:00:00 GMT Cloud When to decide access with roles, attributes or relationships, and how to avoid duplicating access rules across every service. https://sazardev.github.io/software-architecture/en/docs/migracion-nube-6r https://sazardev.github.io/software-architecture/en/docs/migracion-nube-6r Wed, 14 Oct 2026 00:00:00 GMT Cloud Rehost, replatform, refactor, repurchase, retire and retain: choosing the cloud migration strategy per application, with judgement. https://sazardev.github.io/software-architecture/en/docs/sesiones-tokens-sso https://sazardev.github.io/software-architecture/en/docs/sesiones-tokens-sso Wed, 14 Oct 2026 00:00:00 GMT Cloud Server-side sessions versus self-contained tokens, expiry and rotation, revocation, SSO on top of OAuth 2.0, and where to keep tokens in the browser. https://sazardev.github.io/software-architecture/en/docs/organigrama-y-sistema https://sazardev.github.io/software-architecture/en/docs/organigrama-y-sistema Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI Conway's law in practice: how your organization's communication ends up in the system, and how the inverse Conway maneuver lets you design teams on purpose. https://sazardev.github.io/software-architecture/en/docs/adr-ciclo-de-vida https://sazardev.github.io/software-architecture/en/docs/adr-ciclo-de-vida Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI An ADR is proposed, accepted and, over time, deprecated or superseded. How to keep a decision log without erasing its history. https://sazardev.github.io/software-architecture/en/docs/autonomia-de-la-ia https://sazardev.github.io/software-architecture/en/docs/autonomia-de-la-ia Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI Autonomy levels for AI systems: which steps stay deterministic, where human approval belongs, how to stop safely and how to trace cost and idempotency. https://sazardev.github.io/software-architecture/en/docs/plataforma-interna-idp https://sazardev.github.io/software-architecture/en/docs/plataforma-interna-idp Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI What an internal developer platform is, when it pays for its cost, and how to run it as a product with measurable golden paths. https://sazardev.github.io/software-architecture/en/docs/monorepo-o-polirepo https://sazardev.github.io/software-architecture/en/docs/monorepo-o-polirepo Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI When a monorepo pays off, when a polyrepo is better, and which hidden costs each option brings, with explicit criteria for the decision. https://sazardev.github.io/software-architecture/en/docs/rfc-y-revisiones-de-arquitectura https://sazardev.github.io/software-architecture/en/docs/rfc-y-revisiones-de-arquitectura Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI How to take technical proposals through review with timeboxes, clear decision criteria and an ADR record, without turning every change into a committee. https://sazardev.github.io/software-architecture/en/docs/catalogo-servicios-gobierno-apis https://sazardev.github.io/software-architecture/en/docs/catalogo-servicios-gobierno-apis Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI A service catalogue with an owner, a status and a contract per service, light governance rules and an API lifecycle with deprecation and retirement dates. https://sazardev.github.io/software-architecture/en/docs/documentar-arquitectura-util https://sazardev.github.io/software-architecture/en/docs/documentar-arquitectura-util Wed, 14 Oct 2026 00:00:00 GMT Decisions, processes and AI What architecture documentation must answer, how to pick its level of detail, keep it next to the code and measure whether anyone uses it. https://sazardev.github.io/software-architecture/en/docs/getting-started https://sazardev.github.io/software-architecture/en/docs/getting-started Sat, 10 Oct 2026 00:00:00 GMT Foundations An orientation guide: what this site is, what to read and in what order for your profile, a four-week plan, how to use search and how to contribute content. https://sazardev.github.io/software-architecture/en/docs/adr https://sazardev.github.io/software-architecture/en/docs/adr Mon, 12 Oct 2026 00:00:00 GMT Foundations A practical guide to ADRs: what they are, when to write them, templates (Nygard, MADR, Y-statements), lifecycle, PR review and working with AI agents. https://sazardev.github.io/software-architecture/en/docs/acoplamiento-cohesion https://sazardev.github.io/software-architecture/en/docs/acoplamiento-cohesion Mon, 12 Oct 2026 00:00:00 GMT Foundations A guide for architects: types of cohesion and coupling, information hiding, deep modules, Demeter, instability and connascence, with tooling. https://sazardev.github.io/software-architecture/en/docs/atributos-de-calidad https://sazardev.github.io/software-architecture/en/docs/atributos-de-calidad Mon, 12 Oct 2026 00:00:00 GMT Foundations How to choose the quality attributes that drive your architecture, write them as measurable scenarios, weigh trade-offs with a light ATAM and track SLOs. https://sazardev.github.io/software-architecture/en/docs/devops-cultura https://sazardev.github.io/software-architecture/en/docs/devops-cultura Mon, 12 Oct 2026 00:00:00 GMT Foundations A foundational guide: what DevOps is and is not, its culture (CALMS, Three Ways, Westrum), the DORA metrics and how to adopt it without starting with tools. https://sazardev.github.io/software-architecture/en/docs/patrones-de-diseno https://sazardev.github.io/software-architecture/en/docs/patrones-de-diseno Mon, 12 Oct 2026 00:00:00 GMT Foundations Which GoF patterns still matter, which ones the language absorbed and which dependency injection replaced, plus a guide to deciding when to use them. https://sazardev.github.io/software-architecture/en/docs/trade-offs-y-decisiones https://sazardev.github.io/software-architecture/en/docs/trade-offs-y-decisiones Mon, 12 Oct 2026 00:00:00 GMT Foundations How to reason through an architecture decision: explicit criteria, reversibility, the last responsible moment, cognitive biases and a reusable method. https://sazardev.github.io/software-architecture/en/docs/principios-de-diseno-basicos https://sazardev.github.io/software-architecture/en/docs/principios-de-diseno-basicos Mon, 12 Oct 2026 00:00:00 GMT Foundations DRY, KISS, YAGNI, the Law of Demeter and information hiding: where they come from, what each protects, when they help and when they hurt. https://sazardev.github.io/software-architecture/en/docs/complejidad-esencial-y-accidental https://sazardev.github.io/software-architecture/en/docs/complejidad-esencial-y-accidental Mon, 12 Oct 2026 00:00:00 GMT Foundations The line Brooks drew between the complexity of the problem and the one your tools add: how to diagnose it, avoid its traps and reduce it. https://sazardev.github.io/software-architecture/en/docs/ley-de-conway-team-topologies https://sazardev.github.io/software-architecture/en/docs/ley-de-conway-team-topologies Mon, 12 Oct 2026 00:00:00 GMT Foundations Why an organization's communication ends up in its architecture, the inverse Conway maneuver, and how to design teams with Team Topologies. https://sazardev.github.io/software-architecture/en/docs/datos-acid-y-aislamiento https://sazardev.github.io/software-architecture/en/docs/datos-acid-y-aislamiento Mon, 12 Oct 2026 00:00:00 GMT Foundations Data modeling, ACID transactions, concurrency anomalies and isolation levels: what each level protects against and how to choose in your database. https://sazardev.github.io/software-architecture/en/docs/numeros-y-leyes-de-rendimiento https://sazardev.github.io/software-architecture/en/docs/numeros-y-leyes-de-rendimiento Mon, 12 Oct 2026 00:00:00 GMT Foundations The laws of Little and Amdahl, the Universal Scalability Law and queueing: how to estimate latency, concurrency and capacity before you build. https://sazardev.github.io/software-architecture/en/docs/estilos-arquitectonicos https://sazardev.github.io/software-architecture/en/docs/estilos-arquitectonicos Mon, 12 Oct 2026 00:00:00 GMT Foundations What an architectural style is, how it differs from a pattern and a technology, and how to choose among nine styles based on your quality attributes. https://sazardev.github.io/software-architecture/en/docs/c4-model https://sazardev.github.io/software-architecture/en/docs/c4-model Sat, 10 Oct 2026 00:00:00 GMT System design Learn the four levels of the C4 model with a complete example: context, containers, components and code, plus notation rules and common mistakes. https://sazardev.github.io/software-architecture/en/docs/domain-driven-design https://sazardev.github.io/software-architecture/en/docs/domain-driven-design Mon, 12 Oct 2026 00:00:00 GMT System design A DDD guide for architects: subdomains, ubiquitous language, bounded contexts, aggregates, Event Storming and the tools that keep the design honest. https://sazardev.github.io/software-architecture/en/docs/arquitectura-hexagonal https://sazardev.github.io/software-architecture/en/docs/arquitectura-hexagonal Mon, 12 Oct 2026 00:00:00 GMT System design A guide for architects: ports and adapters, the dependency rule, how to organize and name the pieces, how to test it and protect it with executable rules. https://sazardev.github.io/software-architecture/en/docs/diagramas-como-codigo https://sazardev.github.io/software-architecture/en/docs/diagramas-como-codigo Mon, 12 Oct 2026 00:00:00 GMT System design Compare Mermaid, Structurizr, D2, PlantUML and Graphviz on one system, and learn to version, validate in CI and keep your architecture diagrams alive. https://sazardev.github.io/software-architecture/en/docs/monolito-vs-microservicios https://sazardev.github.io/software-architecture/en/docs/monolito-vs-microservicios Mon, 12 Oct 2026 00:00:00 GMT System design How to choose between a monolith, a modular monolith and microservices: real costs, enforceable boundaries, team structure and migration paths. https://sazardev.github.io/software-architecture/en/docs/arquitectura-en-capas-clean-onion https://sazardev.github.io/software-architecture/en/docs/arquitectura-en-capas-clean-onion Mon, 12 Oct 2026 00:00:00 GMT System design Layered, Onion and Clean Architecture compared: the dependency rule, what crosses each boundary, common failures and a guide to choosing. https://sazardev.github.io/software-architecture/en/docs/cap-pacelc https://sazardev.github.io/software-architecture/en/docs/cap-pacelc Mon, 12 Oct 2026 00:00:00 GMT System design What CAP and PACELC actually say, the spectrum of consistency models, and how to choose the trade-off per operation in a distributed system. https://sazardev.github.io/software-architecture/en/docs/event-driven-cqrs-event-sourcing https://sazardev.github.io/software-architecture/en/docs/event-driven-cqrs-event-sourcing Mon, 12 Oct 2026 00:00:00 GMT System design Events versus commands, notification versus state transfer, CQRS and Event Sourcing: when they pay off, projections, versioning and data erasure. https://sazardev.github.io/software-architecture/en/docs/sagas-outbox-idempotencia https://sazardev.github.io/software-architecture/en/docs/sagas-outbox-idempotencia Mon, 12 Oct 2026 00:00:00 GMT System design How to coordinate changes across services without a distributed transaction: sagas, compensations, outbox, deduplication and idempotency. https://sazardev.github.io/software-architecture/en/docs/diseno-de-apis https://sazardev.github.io/software-architecture/en/docs/diseno-de-apis Mon, 12 Oct 2026 00:00:00 GMT System design Contract-first, REST, GraphQL and gRPC, non-breaking changes, pagination, RFC 9457 errors, idempotency and rate limits for APIs that need to evolve. https://sazardev.github.io/software-architecture/en/docs/resiliencia-sistemas-distribuidos https://sazardev.github.io/software-architecture/en/docs/resiliencia-sistemas-distribuidos Mon, 12 Oct 2026 00:00:00 GMT System design Timeouts, deadlines, retries with backoff and jitter, circuit breakers, bulkheads and load shedding to contain partial failures and measure them. https://sazardev.github.io/software-architecture/en/docs/caching-colas-streaming https://sazardev.github.io/software-architecture/en/docs/caching-colas-streaming Mon, 12 Oct 2026 00:00:00 GMT System design Caching patterns, invalidation and stampedes; queues versus partitioned logs, delivery semantics, and how to choose between a queue, pub/sub and a log. https://sazardev.github.io/software-architecture/en/docs/escalabilidad-casos-clasicos https://sazardev.github.io/software-architecture/en/docs/escalabilidad-casos-clasicos Mon, 12 Oct 2026 00:00:00 GMT System design A method for scaling: requirements, back-of-the-envelope estimates, partitions and replicas, applied to a URL shortener, a rate limiter and a news feed. https://sazardev.github.io/software-architecture/en/docs/multi-tenancy https://sazardev.github.io/software-architecture/en/docs/multi-tenancy Mon, 12 Oct 2026 00:00:00 GMT System design How to design a multi-tenant SaaS: isolation models, tenant identification, Row-Level Security, noisy neighbors, schema migrations and usage metering. https://sazardev.github.io/software-architecture/en/docs/clean-code https://sazardev.github.io/software-architecture/en/docs/clean-code Sat, 10 Oct 2026 00:00:00 GMT Practices & quality A practical clean code guide: names, functions, errors, complexity, tests, refactoring and technical debt, with before/after examples and a review checklist. https://sazardev.github.io/software-architecture/en/docs/harness-engineering-claude-code https://sazardev.github.io/software-architecture/en/docs/harness-engineering-claude-code Mon, 12 Oct 2026 00:00:00 GMT Practices & quality A guide for architects: designing the Claude Code harness with memory, hooks, permissions, subagents and dynamic workflows, current as of October 2026. https://sazardev.github.io/software-architecture/en/docs/fitness-functions https://sazardev.github.io/software-architecture/en/docs/fitness-functions Mon, 12 Oct 2026 00:00:00 GMT Practices & quality How to turn your architecture's characteristics into automated checks: types, tools per language and how to adopt them in legacy systems. https://sazardev.github.io/software-architecture/en/docs/deuda-tecnica-evolucion https://sazardev.github.io/software-architecture/en/docs/deuda-tecnica-evolucion Mon, 12 Oct 2026 00:00:00 GMT Practices & quality How to name, measure and pay down technical debt, and how to evolve the architecture through guided, incremental change instead of rewrites. https://sazardev.github.io/software-architecture/en/docs/seguridad-por-diseno https://sazardev.github.io/software-architecture/en/docs/seguridad-por-diseno Mon, 12 Oct 2026 00:00:00 GMT Practices & quality Security as a property of the architecture: classic principles, STRIDE in one hour, trust boundaries, secrets, the supply chain and zero trust. https://sazardev.github.io/software-architecture/en/docs/lenguajes-era-ia https://sazardev.github.io/software-architecture/en/docs/lenguajes-era-ia Mon, 12 Oct 2026 00:00:00 GMT Trends A guide for architects: the role of Python, TypeScript, Rust, Go, Mojo and Zig in the AI era, and how to choose 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what changes in control, data and cost, and how to choose a model per workload. https://sazardev.github.io/software-architecture/en/docs/nube-hibrida-en-detalle https://sazardev.github.io/software-architecture/en/docs/nube-hibrida-en-detalle Mon, 12 Oct 2026 00:00:00 GMT Cloud Patterns, redundant connectivity, federated identity, consistent deployment, and what must keep running when the link to the cloud goes down. https://sazardev.github.io/software-architecture/en/docs/casado-a-un-proveedor https://sazardev.github.io/software-architecture/en/docs/casado-a-un-proveedor Mon, 12 Oct 2026 00:00:00 GMT Cloud Types of cloud lock-in, how to estimate your exit cost, portability layer by layer, and how to document an exit plan you have actually tested. https://sazardev.github.io/software-architecture/en/docs/multinube-cuando-tiene-sentido https://sazardev.github.io/software-architecture/en/docs/multinube-cuando-tiene-sentido Mon, 12 Oct 2026 00:00:00 GMT Cloud What multicloud is and how it differs from hybrid, which reasons hold up and which fail, its hidden costs, useful patterns and a decision framework. https://sazardev.github.io/software-architecture/en/docs/serverless-y-computacion-gestionada https://sazardev.github.io/software-architecture/en/docs/serverless-y-computacion-gestionada Mon, 12 Oct 2026 00:00:00 GMT Cloud From control to abstraction: the function execution model, cold starts, state, retries, per-invocation cost and coupling to your cloud provider. https://sazardev.github.io/software-architecture/en/docs/redes-identidad-seguridad-nube https://sazardev.github.io/software-architecture/en/docs/redes-identidad-seguridad-nube Mon, 12 Oct 2026 00:00:00 GMT Cloud Virtual networks, private endpoints, workload identity, least privilege, secrets, keys and logging: how to protect a workload running in the cloud. https://sazardev.github.io/software-architecture/en/docs/regiones-zonas-y-recuperacion 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processes and AI Value stream mapping, wait time versus process time, the theory of constraints, Little’s law and WIP limits to shorten delivery. https://sazardev.github.io/software-architecture/en/docs/mejora-continua-y-experimentos https://sazardev.github.io/software-architecture/en/docs/mejora-continua-y-experimentos Mon, 12 Oct 2026 00:00:00 GMT Decisions, processes and AI The PDSA cycle, kaizen and the improvement kata; how to design experiments with a hypothesis, guardrails and a stopping rule, and retros that change things. https://sazardev.github.io/software-architecture/en/docs/medir-decisiones-okr-kpi https://sazardev.github.io/software-architecture/en/docs/medir-decisiones-okr-kpi Mon, 12 Oct 2026 00:00:00 GMT Decisions, processes and AI How to measure in order to decide: health KPIs, OKRs with key results, guardrail metrics against side effects and thresholds that trigger a decision. https://sazardev.github.io/software-architecture/en/docs/ia-para-decidir-negocio 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approve and stop, and how to trace state, cost and idempotency per step. https://sazardev.github.io/software-architecture/en/docs/herramientas-para-decidir-y-documentar https://sazardev.github.io/software-architecture/en/docs/herramientas-para-decidir-y-documentar Mon, 12 Oct 2026 00:00:00 GMT Decisions, processes and AI A framework for choosing decision and documentation software by integration, data export, exit cost, permissions and search, not by hype. https://sazardev.github.io/software-architecture/en/docs/pensamiento-sistemico-y-sesgos https://sazardev.github.io/software-architecture/en/docs/pensamiento-sistemico-y-sesgos Mon, 12 Oct 2026 00:00:00 GMT Decisions, processes and AI Reinforcing and balancing loops, delays, fixes that make the problem worse, and the biases that distort decisions, with techniques to counter them. https://sazardev.github.io/software-architecture/en/docs/solid https://sazardev.github.io/software-architecture/en/docs/solid Sat, 10 Oct 2026 00:00:00 GMT Foundations The five SOLID principles explained with concrete examples and links to go deeper on each one.