--- title: Best System Design Codex posts — June 2025 | daily.dev description: The most upvoted System Design Codex posts from June 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/systemdesigncodex/best-of/2025/06 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/systemdesigncodex/best-of/2025/06 og:type: website og:site_name: daily.dev og:title: Best System Design Codex posts — June 2025 | daily.dev og:description: The most upvoted System Design Codex posts from June 2025, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of System Design Codex — June 2025 1. 1 [](https://daily.dev/posts/essential-roadmap-to-learn-api-development-bmtr5japw "Essential Roadmap to Learn API Development") Article System Design Codex · 1y Essential Roadmap to Learn API Development A comprehensive guide covering the essential topics for learning API development, from understanding basic concepts like REST and HTTP methods to advanced topics including authentication mechanisms (OAuth 2.0, JWT), API design principles, testing strategies, and deployment considerations. The roadmap includes practical tools like Postman and OpenAPI, security best practices, and hands-on experience with public APIs from services like Google Maps and Stripe. 160 1 [See all System Design Codex archives](/sources/systemdesigncodex/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/systemdesigncodex/best-of/2025/06#page","url":"https://daily.dev/sources/systemdesigncodex/best-of/2025/06","name":"Best System Design Codex Posts — June 2025","description":"The most upvoted System Design Codex posts from June 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/systemdesigncodex/best-of/2025/06#items","numberOfItems":1,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/essential-roadmap-to-learn-api-development-bmtr5japw","name":"Essential Roadmap to Learn API Development"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"System Design Codex","item":"https://daily.dev/sources/systemdesigncodex"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/systemdesigncodex/best-of"},{"@type":"ListItem","position":5,"name":"June 2025"}]}]} ```