Advanced distributed patterns - event sourcing, CQRS, saga, stream processing, append-only log, exactly-once delivery, sequencer, double-entry ledger, erasure coding, order book, watermarks
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Root cause analysis and debugging
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Shared artifact registry, common artifact patterns, and integration validation. Load when tracking data that flows across journey steps or validating horizontal coherence.
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Quality dimensions and review checklist for devop reviews
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Guided wizard to start a new feature. Asks what you want to build, recommends the right starting wave, and launches it.
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Mom Test questioning toolkit, JTBD analysis, interview conduct, assumption testing framework, and hypothesis design
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JTBD methodology for extracting real jobs behind feature requests — job statements, abstraction layers, first-principles extraction, ODI outcome statements, and opportunity scoring
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Haskell language-specific patterns, GADTs, type classes, and effect systems
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Toyota 5 Whys methodology with multi-causal branching, evidence requirements, and validation techniques
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Hexagonal architecture patterns with pure core and side-effect shell for functional codebases
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F# language-specific patterns, Railway-Oriented Programming, and Computation Expressions
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Scala 3 language-specific patterns with ZIO, Cats Effect, and opaque types
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Naming conventions, API ergonomics, and usability patterns for functional code
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5-layer agent output validation, I/O contract specification, vertical slice development, and test doubles policy with per-layer examples
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Clojure language-specific patterns, data-first modeling, REPL-driven development, and spec
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JTBD opportunity scoring and prioritization - outcome statement format, opportunity algorithm, scoring interpretation, feature prioritization, and opportunity matrix template
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Domain modeling with algebraic data types, smart constructors, and type-level error handling
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Algebra-driven API design with monoids, semigroups, and interpreters via algebraic equations
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TLA+ and PlusCal for specifying distributed system invariants. Decision heuristics for when formal verification adds value, key patterns, state explosion management, and alternatives comparison.
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Kotlin language-specific patterns with Arrow, Raise DSL, and coroutine-based effects
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Infrastructure as Code patterns (Terraform, Kubernetes), observability design (SLOs, metrics, alerting, dashboards), and pipeline security stages. Load when designing infrastructure, observability, or security scanning.
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Evidence collection methods, problem categorization, analysis techniques, and solution design patterns
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Strategic and tactical DDD patterns, bounded context discovery, context mapping, aggregate design rules, and decision frameworks for when to apply DDD
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Translating JTBD analysis to BDD scenarios - job story to Given-When-Then patterns, forces-based test discovery, job-map-based test discovery, and property-shaped criteria
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