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Code Archaeology

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Latest from Code Archaeology

30 recent articles

Code Archaeology

Oct 14, 2026 · Backend Development

Evolutionary Architecture Structure: Connascence, Architectural Quanta, and Contract-Driven Design

This article explores how software topology determines evolvability through connascence-based coupling analysis, architectural quanta as independently deployable units, contract spectra from strict RPC to loose key-value, microservices as evolutionary templates, data mesh for analytical data, and evolutionary database practices including Expand/Contract migrations and data governance.

architectural quantumbounded contextconnascence

0 likes · 56 min read

Evolutionary Architecture Structure: Connascence, Architectural Quanta, and Contract-Driven Design

Code Archaeology

Sep 30, 2026 · Fundamentals

Advanced C4 Modeling: Notation, Microservices & Scaling Architecture Diagrams

This article explores advanced C4 model topics including notation independence, element and relationship design, microservices and message-driven architecture modeling, scaling techniques for large systems, and a diagramming maturity model for engineering teams.

C4 modelarchitecture diagrammingdiagramming maturity

0 likes · 45 min read

Advanced C4 Modeling: Notation, Microservices & Scaling Architecture Diagrams

Code Archaeology

Sep 28, 2026 · Fundamentals

Beyond Static Structure: C4's Dynamic, Deployment & Landscape Diagrams

This article explains C4 model's three supplementary diagrams—Dynamic, Deployment, and System Landscape—detailing their purpose, scope, notation, and practical examples using an internet banking system to illustrate runtime interactions, multi-environment deployments, and enterprise-wide system relationships.

AWSC4 modelDocker

0 likes · 27 min read

Beyond Static Structure: C4's Dynamic, Deployment & Landscape Diagrams

Code Archaeology

Sep 23, 2026 · Fundamentals

C4 Code Diagrams: Visualizing Component Internals with UML Class Diagrams

This article explains the C4 model's code diagram level, detailing its purpose, scope, and content, and demonstrates when to create one using a Java-based core banking adapter example with hand-drawn and reverse-generated UML class diagrams.

C4 modelJavaUML class diagram

0 likes · 11 min read

C4 Code Diagrams: Visualizing Component Internals with UML Class Diagrams

Code Archaeology

Sep 14, 2026 · R&D Management

Mastering C4 Container Diagrams: A Step-by-Step Guide to Modeling Software System Internals

This article explains the C4 Container Diagram — its purpose, key attributes, notation, and a complete walkthrough using an Internet Banking System example to show how to decompose a system into applications, data stores, and their communication protocols.

AWS S3C4 modelSpring Boot

0 likes · 19 min read

Mastering C4 Container Diagrams: A Step-by-Step Guide to Modeling Software System Internals

Code Archaeology

Sep 7, 2026 · Fundamentals

Why C4 Starts with System Context Diagrams: A Step-by-Step Guide

This article explains why the C4 model begins with system context diagrams, detailing their purpose, key elements (people, software systems, relationships), notation conventions, and a step-by-step example of creating a context diagram for an online banking system integrating with core banking and email services.

C4 modelarchitecture documentationonline banking example

0 likes · 14 min read

Why C4 Starts with System Context Diagrams: A Step-by-Step Guide

Code Archaeology

Sep 2, 2026 · Fundamentals

C4 Model: Four Abstraction Layers for Software Architecture Visualization

This article explains the C4 model's four abstraction layers—Software System, Container, Component, and Code—and their corresponding diagrams, plus three supplementary diagrams, emphasizing that shared abstractions are more critical than unified notation for effective software architecture communication.

C4 modelabstraction layersarchitecture diagrams

0 likes · 10 min read

C4 Model: Four Abstraction Layers for Software Architecture Visualization

Code Archaeology

Aug 31, 2026 · Fundamentals

How to Draw Architecture Diagrams: Principles, Tools & Modeling Standards

This article teaches software architects how to create effective architecture diagrams by following representational consistency, avoiding premature tool attachment, selecting tools with layers/templates/magnets, understanding UML/C4/ArchiMate standards, and applying six diagramming conventions for titles, lines, shapes, labels, color, and legends.

ArchiMateC4 modelUML

0 likes · 11 min read

How to Draw Architecture Diagrams: Principles, Tools & Modeling Standards

Code Archaeology

Aug 26, 2026 · R&D Management

Architectural Decision Records (ADR): A Practical Framework for Effective Architecture Decisions

This article defines architectural decisions, distinguishes them from technical decisions using architectural significance criteria, outlines three anti-patterns (Covering Your Assets, Groundhog Day, Email-Driven Architecture), and details the ADR framework with its seven sections, storage strategies, and applications for standards and legacy systems.

ADRAnti-PatternsDocumentation

0 likes · 22 min read

Architectural Decision Records (ADR): A Practical Framework for Effective Architecture Decisions

Code Archaeology

Aug 24, 2026 · Backend Development

Why Spring Changed HttpMethod from Enum to Class: Fixing an Open Set Mismatch

Spring changed HttpMethod from enum to class in Spring 6.0 because HTTP methods form an open, extensible set per RFC 7231, making enum's closed nature a poor fit that forced workarounds like dual getters and null-returning resolve methods until a major version break allowed the fix.

API DesignEnum vs ClassHTTP Methods

0 likes · 7 min read

Why Spring Changed HttpMethod from Enum to Class: Fixing an Open Set Mismatch