--- title: Best Faun posts — July 2021 | daily.dev description: The most upvoted Faun posts from July 2021, curated by the daily.dev community. canonical: https://daily.dev/sources/faun/best-of/2021/07 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/faun/best-of/2021/07 og:type: website og:site_name: daily.dev og:title: Best Faun posts — July 2021 | daily.dev og:description: The most upvoted Faun posts from July 2021, 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 Faun — July 2021 1. 1 [](https://daily.dev/posts/solid-software-design-fnhapzll "SOLID Software Design") Article Faun · 5y SOLID Software Design SOLID is an acronym for five computer programming principles intended to make software designs more maintainable and avoid refactoring and code rot. SOLID stands for: S: Single-responsibility principle O: Open–closed principle L: Liskov substitution principle I: Interface segregation principle D: Dependency inversion principle. 63 4 2. 2 [](https://daily.dev/posts/how-netflix-works-patj6htqu "How Netflix Works") Article Faun · 5y How Netflix Works Netflix supports a wide range of devices ranges from smartphones, smart TVs, PCs, and their different operating systems. It all starts with you pressing that click button and a request to the Netflix servers which are mainly hosted on Amazon Web Services. The request together with multiple other requests is forwarded to Amazon's elastic load balance to route to the traffic different EC2 instances. 20 2 3. 3 [](https://daily.dev/posts/how-whatsapp-messenger-works--z1jkrdnwg "How WhatsApp Messenger Works!") Article Faun · 5y How WhatsApp Messenger Works! How WhatsApp Messenger Works! Thenjiwe kubheka explains how the app works. The system is centered around a duplex connection system meaning messages are bidirectional. There are different types of connections namely TCP, UDP, Web Socket. WhatsApp uses MnesiaDB as its database management system, Mnesia is highly favorable for its ability to be reconfigured. 17 1 [See all Faun archives](/sources/faun/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/faun/best-of/2021/07#page","url":"https://daily.dev/sources/faun/best-of/2021/07","name":"Best Faun Posts — July 2021","description":"The most upvoted Faun posts from July 2021, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/faun/best-of/2021/07#items","numberOfItems":3,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/solid-software-design-fnhapzll","name":"SOLID Software Design"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/how-netflix-works-patj6htqu","name":"How Netflix Works"},{"@type":"ListItem","position":3,"url":"https://daily.dev/posts/how-whatsapp-messenger-works--z1jkrdnwg","name":"How WhatsApp Messenger Works!"}]},{"@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":"Faun","item":"https://daily.dev/sources/faun"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/faun/best-of"},{"@type":"ListItem","position":5,"name":"July 2021"}]}]} ```