09 — Microservices Architecture

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Буллеты про архитектуру, микросервисы, DDD, распил монолита, взаимодействие сервисов, границы данных и платформенную работу.

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Проектирование систем

Designed and delivered a X-service platform serving Xk RPS with p99 under Xms across X regions.
Led the architecture of the X domain from greenfield to production in X months, now serving X customers.
Authored X architecture decision records adopted org-wide, cutting design-review cycles from Xw to Xd.
Designed for X× projected growth, and the system absorbed a X× traffic spike with no architectural changes.
Built a modular monolith with enforced module boundaries, keeping deploy simplicity while isolating X domains.
Chose a monolith-first approach with clean seams, avoiding X premature service splits and $X/month of overhead.
Reduced cross-service coupling by replacing X synchronous dependencies with events and cached projections.
Designed multi-tenant architecture serving X tenants with per-tenant isolation, quotas and data residency.
Built a platform abstraction adopted by X product teams, cutting new-service setup from Xd to Xh.
Ran technical design reviews for X major initiatives, catching X scalability issues before implementation.

Structured X services with clean layering (delivery, service, adapter), keeping the domain free of infrastructure dependencies.
Modelled X bounded contexts with explicit anti-corruption layers, removing X leaky cross-domain dependencies.
Introduced aggregates and invariants enforced in the domain layer, cutting data-integrity defects X%.
Extracted X domain services from X-line handlers, making the core logic unit-testable without infrastructure.
Defined a ubiquitous language across engineering and product, cutting requirement-clarification cycles X%.
Replaced anemic models with rich domain entities, reducing duplicated business rules across X call sites.
Introduced hexagonal ports and adapters, allowing X infrastructure swaps to touch only X files.