--- title: Best System Design Codex posts — January 2025 | daily.dev description: The most upvoted System Design Codex posts from January 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/systemdesigncodex/best-of/2025/01 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/systemdesigncodex/best-of/2025/01 og:type: website og:site_name: daily.dev og:title: Best System Design Codex posts — January 2025 | daily.dev og:description: The most upvoted System Design Codex posts from January 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 — January 2025 1. 1 [](https://daily.dev/posts/8-must-know-distributed-system-design-patterns-iyyp3ywns "8 Must-Know Distributed System Design Patterns") Article System Design Codex · 2y 8 Must-Know Distributed System Design Patterns Distributed systems are crucial for scalability, fault tolerance, and high availability but pose challenges such as state management, failure handling, and communication. Key design patterns like Ambassador Pattern, Circuit Breaker Pattern, CQRS, Sharding, Sidecar Pattern, Pub/Sub Pattern, Leader Election, and Event Sourcing help address these challenges by offloading tasks, preventing cascading failures, separating read/writes, partitioning data, decoupling concerns, enabling async communication, managing shared resources, and capturing state changes as events. 379 6 [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/2025/01#page","url":"https://daily.dev/sources/systemdesigncodex/best-of/2025/01","name":"Best System Design Codex Posts — January 2025","description":"The most upvoted System Design Codex posts from January 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/systemdesigncodex/best-of/2025/01#items","numberOfItems":1,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/8-must-know-distributed-system-design-patterns-iyyp3ywns","name":"8 Must-Know Distributed System Design Patterns"}]},{"@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":"January 2025"}]}]} ```