Terminology

2205 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 areas2205 Architecture Fundamentals77 Distributed Systems107 Data Architecture110 Cloud Architecture94 Networking88 API & Integration Architecture82 Reliability & Resilience75 Observability70 Performance & Capacity Engineering72 Security Architecture86 Cost Architecture & FinOps71 Business Architecture67 Architecture Communication67 Enterprise Architecture66 Legacy Modernization71 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 concept794 practice734 pattern368 metric125 case-study77 tool62 protocol45

4 terms shown.

Term	Kind	Topic	What it is
Database Performance	practice	Database Performance	The interventions that resolve database bottlenecks, in the order they should be attempted.
In-Memory Reservation Service Inventory Reservation Service, Single-Owner Counter, Memory-Speed Allocation	pattern	Database Performance	Moving a heavily-contended counter or inventory pool into a single-owner in-memory service that serialises decisions at memory speed and persists asynchronously, trading a small durability window for orders of…
Index Write Amplification Index Maintenance Cost, Secondary Index Overhead	concept	Database Performance	The multiplication of write work caused by secondary indexes, where every insert and every update to an indexed column must also maintain each index tree inside the same transaction.
Query Plan Regression	concept	Database Performance	A sudden latency increase caused by the database optimiser choosing a different execution plan for an unchanged query, typically after statistics or data volume change.