Terminology

2185 terms, tools, patterns and metrics an architect is expected to use precisely. Each one gets a short explanation of what it is, and — where it matters — what it is commonly confused with. Search filters as you type; the column headers sort.

All areas2185 Architecture Fundamentals77 Distributed Systems107 Data Architecture110 Cloud Architecture89 Networking88 API & Integration Architecture82 Reliability & Resilience75 Observability70 Performance & Capacity Engineering72 Security Architecture81 Cost Architecture & FinOps66 Business Architecture67 Architecture Communication67 Enterprise Architecture66 Legacy Modernization66 AI-Era Architecture69 Software Architecture & Engineering71 Architecture Patterns71 Architecture Decision-Making63 The Architect's Meta-Skills61 Delivery & Release Engineering66 Platform Engineering & Developer Experience70 Testing & Quality Architecture66 Data Platform Architecture64 Streaming & Real-Time Data69 Data Governance & Semantics69 Frontend & Experience Architecture66 Edge, Mobile & IoT68 Regulatory & Data Protection Architecture65 Assurance, Audit & Model Risk64

Kind Any concept785 practice729 pattern362 metric125 case-study77 tool62 protocol45

3 terms shown.

Term	Kind	Topic	What it is
Idempotency Idempotency Key, Exactly-Once Effect	pattern	Idempotency	The property that performing an operation twice has the same effect as performing it once — the only practical defence against the duplicates a retrying client will inevitably send.
Idempotency Key Scoping Key Scope, Deduplication Scope	practice	Idempotency	The decision of what an idempotency key is unique within, what is stored alongside it, and how long it lives - the three choices that determine whether deduplication actually works.
Idempotency Token Store	pattern	Idempotency	The durable record of which idempotency keys have been seen and what each one returned, and the component that decides whether the guarantee is real.