--- title: SOLID Principles Explained | daily.dev description: In software engineering, SOLID is a mnemonic acronym for five design principles. They are first mentioned in a paper written in 2000 by the software engineer,... canonical: https://daily.dev/posts/solid-principles-explained-wacxucpii twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: SOLID Principles Explained | daily.dev og:description: In software engineering, SOLID is a mnemonic acronym for five design principles. They are first mentioned in a paper written in 2000 by the software engineer,... og:url: https://daily.dev/posts/solid-principles-explained-wacxucpii og:image: https://api.daily.dev/og/posts/WAcXUCpiI.png og:image:alt: SOLID Principles Explained og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # SOLID Principles Explained **[Towards Dev](https://daily.dev/sources/towardsdev)** · 9 min read · 171 upvotes · 4 comments ## Summary In software engineering, SOLID is a mnemonic acronym for five design principles. They are first mentioned in a paper written in 2000 by the software engineer, Robert Martin. SOLID stands for: Single Responsibility Principle, Open-Closed Principle, Dependency Inversion Principle, Interface Segregation Principle. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@rounaktadvi** · 0 upvotes > I would urge other devs to learn TDD and Clean code **@fabiend31** · 0 upvotes > the base **@musfiqdehan** · 0 upvotes > Amazing article. Thanks for explaining using Python codes. **@eomm** · 0 upvotes > Great article! Fastify is based on this principale! ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 1 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/solid-principles-explained-wacxucpii) ```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","@type":"TechArticle","headline":"SOLID Principles Explained","url":"https://daily.dev/posts/solid-principles-explained-wacxucpii","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/solid-principles-explained-wacxucpii"},"datePublished":"2022-03-17T08:21:23.114Z","dateModified":"2022-03-17T08:21:23.115Z","description":"In software engineering, SOLID is a mnemonic acronym for five design principles. They are first mentioned in a paper written in 2000 by the software engineer,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0f9e5cb26bec62370a00b85e919b9a80","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0f9e5cb26bec62370a00b85e919b9a80","isAccessibleForFree":true,"articleSection":"Towards Dev","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Towards Dev","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/2c710db2750a4a70835862534cb7c9d4","url":"https://daily.dev/sources/towardsdev"},"commentCount":4,"discussionUrl":"https://daily.dev/posts/solid-principles-explained-wacxucpii","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":171},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":4}],"keywords":"","timeRequired":"PT9M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Towards Dev","item":"https://daily.dev/sources/towardsdev"},{"@type":"ListItem","position":3,"name":"SOLID Principles Explained"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/solid-principles-explained-wacxucpii","comment":[{"@type":"Comment","text":"I would urge other devs to learn TDD and Clean code","datePublished":"2022-07-15T17:16:01.158Z","url":"https://daily.dev/posts/WAcXUCpiI#c-Y1eAHMWJ9","author":{"@type":"Person","name":"Rounak Tadvi","url":"https://daily.dev/rounaktadvi","image":"https://avatars.githubusercontent.com/u/38634459?v=4"}},{"@type":"Comment","text":"the base","datePublished":"2022-03-27T08:42:33.347Z","url":"https://daily.dev/posts/WAcXUCpiI#c-6rjbDEJ5w","author":{"@type":"Person","name":"Fabien","url":"https://daily.dev/fabiend31","image":"https://avatars.githubusercontent.com/u/69767205?v=4"}},{"@type":"Comment","text":"Amazing article. Thanks for explaining using Python codes.","datePublished":"2022-07-08T05:11:28.099Z","url":"https://daily.dev/posts/WAcXUCpiI#c-QT6uhPjCZ","author":{"@type":"Person","name":"Md. Musfiqur Rahaman","url":"https://daily.dev/musfiqdehan","image":"https://media.daily.dev/image/upload/f_auto/v1657202101/avatars/tFeWhIxKfvRRvyB0CDdSF"}},{"@type":"Comment","text":"Great article! Fastify is based on this principale!","datePublished":"2022-03-25T09:59:12.807Z","url":"https://daily.dev/posts/WAcXUCpiI#c-61pldw4Mp","author":{"@type":"Person","name":"Manuel Spigolon","url":"https://daily.dev/eomm","image":"https://lh3.googleusercontent.com/a-/AOh14Giba6GKr61vvfcpL2sUSq0MkxWu6ZNCAxp0KQZ2wWw=s100"}}]} ```