DESIGN PATTERNS IN PRACTICE · DAY 058
Circuit breaker: Design Patterns lessons from production
Expona Admin · Oct 27, 2026 · 8 min read
Tag · 772 articles · 1 interview series
#Performance
Practical Performance articles, guides and code examples from the Expona engineering blog.
Articles
772 articles
DESIGN PATTERNS IN PRACTICE · DAY 066
Caching patterns: a Design Patterns guide for developers
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 077
Optimistic UI: Design Patterns best practices explained
Expona Admin · Oct 27, 2026 · 7 min read
DESIGN PATTERNS IN PRACTICE · DAY 093
Patterns inside NestJS: a practical guide for developers
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 099
Communicate designs with patterns: a step-by-step guide
Expona Admin · Oct 27, 2026 · 8 min read
DESIGN PATTERNS IN PRACTICE · DAY 100
100 days of design patterns: lessons — a practical guide
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 001
Deep JavaScript still matters in the TypeScript era
Expona Admin · Oct 27, 2026 · 8 min read
JAVASCRIPT & TYPESCRIPT · DAY 002
How JavaScript runs for JavaScript & TypeScript developers
Expona Admin · Oct 27, 2026 · 8 min read
JAVASCRIPT & TYPESCRIPT · DAY 006
Scope and closures for JavaScript & TypeScript developers
Expona Admin · Oct 27, 2026 · 11 min read
JAVASCRIPT & TYPESCRIPT · DAY 016
map, filter and reduce, done well: a step-by-step guide
Expona Admin · Oct 27, 2026 · 9 min read
JAVASCRIPT & TYPESCRIPT · DAY 021
Limit async concurrency: real-world lessons and examples
Expona Admin · Oct 27, 2026 · 8 min read
JAVASCRIPT & TYPESCRIPT · DAY 024
Memory leaks in JavaScript: patterns, pitfalls and fixes
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 025
WeakMap and WeakRef for JavaScript & TypeScript developers
Expona Admin · Oct 27, 2026 · 8 min read
JAVASCRIPT & TYPESCRIPT · DAY 055
Types from Zod schemas: a practical guide for developers
Expona Admin · Oct 27, 2026 · 7 min read
JAVASCRIPT & TYPESCRIPT · DAY 056
Runtime validation for JavaScript & TypeScript developers
Expona Admin · Oct 27, 2026 · 9 min read
JAVASCRIPT & TYPESCRIPT · DAY 065
tsc as a type checker: a practical guide for developers
Expona Admin · Oct 27, 2026 · 6 min read
JAVASCRIPT & TYPESCRIPT · DAY 070
JavaScript performance fundamentals: a step-by-step guide
Expona Admin · Oct 27, 2026 · 9 min read
JAVASCRIPT & TYPESCRIPT · DAY 071
Measure with performance.now(): best practices explained
Expona Admin · Oct 27, 2026 · 6 min read
JAVASCRIPT & TYPESCRIPT · DAY 080
Testing TypeScript with Vitest: best practices explained
Expona Admin · Oct 27, 2026 · 8 min read