migration-strategies
Migration strategies: zero-downtime deployments, expand-contract schema changes, database migrations, framework migrations. Use when planning system migrations.
Full skill instructions
references/zero-downtime-migration.md — blue-green, canary, rolling with rollback proceduresreferences/database-migration-patterns.md — expand-contract, schema versioning tools (Flyway, golang-migrate, Prisma), safe migration rulesreferences/data-migration-patterns.md — dual-write between databases, batch ETL with cursor pagination, migration validationreferences/framework-migration.md — strangler fig pattern: CRA→Next.js, Express→Fastify, REST→GraphQLreferences/incremental-migration.md — step-by-step migration rules, rollback plans, shadow mode, monitoring during migration
Applies mathematical optimization — linear programming (simplex, interior point, duality), integer/mixed-integer programming (branch-and-bound, cutting planes), convex optimization (gradient descent variants, Adam, L-BFGS, Newton), constraint satisfaction (backtracking, AC-3, SAT/SMT solvers), an...
IoT security practices covering device identity with X.509 and secure elements, secure boot chains, encrypted communication (TLS/DTLS), firmware signing, network segmentation, device attestation, and vulnerability management for resource-constrained devices.
Migration planning expertise including strangler fig pattern, parallel run strategy, data migration techniques, feature parity tracking, rollback plans, phased timelines, risk mitigation, and zero-downtime migration.
State management expertise including local vs global state decisions, Redux Toolkit, Zustand, Jotai, MobX, Context API patterns, server state (React Query, SWR) vs client state, optimistic updates, and state machines with XState.
Terraform and Infrastructure as Code expertise covering HCL module design, state management, workspaces, provider configuration, drift detection, Terragrunt, infrastructure testing, and resource lifecycle management.
Test data management with factory patterns (Faker.js, Fishery, Factory Bot), database seeding, test data isolation (transactions, cleanup), anonymization and masking for production data, synthetic data generation, fixture management, and shared test state risks. Use when designing test data strat...
Flutter 3.27+ patterns — Riverpod 2 state with codegen, GoRouter 14+ navigation, Impeller rendering (default on all platforms), WASM web, extension types, on-device AI (firebase_ai, MediaPipe), Patrol 3.x testing, platform channels, performance
GCP architecture expertise including Google Cloud Architecture Framework, project and organization structure, VPC and networking design, data and analytics architecture, Kubernetes and serverless patterns, AI/ML platform design, security architecture, and cost optimization strategies. Use proacti...
CI/CD test integration: parallel test execution (sharding), test splitting strategies, flaky test quarantine, test reporting (Allure, ReportPortal, JUnit XML), quality gates (coverage thresholds, no new failures), test result caching, and pre-commit hooks. Use when configuring test pipelines, opt...
Monitoring and observability expertise covering Prometheus/Grafana stack, Datadog, CloudWatch, PagerDuty integration, custom metrics, dashboard design using USE/RED methods, alert routing, uptime monitoring, and log aggregation.
Vue.js expertise including Composition API, Pinia state management, Nuxt.js 3, Vue Router, custom directives, provide/inject patterns, transition system, and Volar tooling configuration.
Sets up observability: structured logging, metrics collection, distributed tracing, alerting rules, dashboard design, SLI/SLO/SLA definition. Covers ELK, Prometheus, Grafana, Datadog, OpenTelemetry. Use when implementing monitoring, debugging production issues, or designing observability architec...
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