AWS FOR DEVELOPERS · DAY 096
My AWS architecture review checklist: a practical guide
Expona Admin · Oct 27, 2026 · 6 min read
Tag · 460 articles · 1 interview series
#Testing
Practical Testing articles, guides and code examples from the Expona engineering blog.
Articles
460 articles
DESIGN PATTERNS IN PRACTICE · DAY 004
Open/Closed with the strategy pattern in Design Patterns
Expona Admin · Oct 27, 2026 · 7 min read
DESIGN PATTERNS IN PRACTICE · DAY 005
Liskov substitution in plain words: a step-by-step guide
Expona Admin · Oct 27, 2026 · 9 min read
DESIGN PATTERNS IN PRACTICE · DAY 006
Interface segregation and dependency inversion explained
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 013
Builder pattern: Design Patterns lessons from production
Expona Admin · Oct 27, 2026 · 6 min read
DESIGN PATTERNS IN PRACTICE · DAY 014
Singleton, and why DI replaced it: a step-by-step guide
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 017
Dependency injection is a pattern too in Design Patterns
Expona Admin · Oct 27, 2026 · 9 min read
DESIGN PATTERNS IN PRACTICE · DAY 030
Chain of responsibility: real-world lessons and examples
Expona Admin · Oct 27, 2026 · 10 min read
DESIGN PATTERNS IN PRACTICE · DAY 042
DTOs and mappers: a Design Patterns guide for developers
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 050
Options and configuration patterns: a step-by-step guide
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 079
Feature toggles: Design Patterns lessons from production
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 081
The rules engine pattern: a hands-on guide for engineers
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 088
When patterns become over-engineering in Design Patterns
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 090
Refactoring toward patterns: what developers should know
Expona Admin · Oct 27, 2026 · 6 min read
DESIGN PATTERNS IN PRACTICE · DAY 096
Testing patterns: a Design Patterns guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
DESIGN PATTERNS IN PRACTICE · DAY 097
Test data builders: a Design Patterns guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 080
Testing TypeScript with Vitest: best practices explained
Expona Admin · Oct 27, 2026 · 8 min read
JAVASCRIPT & TYPESCRIPT · DAY 081
Test your types: a practical JavaScript & TypeScript guide
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 087
Publishing dual packages: a hands-on guide for engineers
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 089
A tiny pipe function: a practical guide for developers
Expona Admin · Oct 27, 2026 · 7 min read