--- title: Best gitconnected posts — September 2023 | daily.dev description: The most upvoted gitconnected posts from September 2023, curated by the daily.dev community. canonical: https://daily.dev/sources/gc/best-of/2023/09 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/gc/best-of/2023/09 og:type: website og:site_name: daily.dev og:title: Best gitconnected posts — September 2023 | daily.dev og:description: The most upvoted gitconnected posts from September 2023, 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 gitconnected — September 2023 1. 1 [](https://daily.dev/posts/10-best-coding-and-programming-interview-books-in-2023-fdbxzbpc2 "10 Best Coding and Programming Interview Books in 2023") Article gitconnected · 3y 10 Best Coding and Programming Interview Books in 2023 10 Best Coding and Programming Interview Books in 2023\. In the past, I have hared some of the best online courses to prepare coding interviews. These books are enough to crack even the toughest of the job interviews at Amazon, or Microsoft. They provide excellent coverage of all essential topics for programming job interviews. 74 1 2. 2 [](https://daily.dev/posts/how-discord-stores-trillions-of-messages-curious-case-of-system-design-w1ug8j6yc "How Discord Stores Trillions of Messages — Curious Case of System Design") Article gitconnected · 3y How Discord Stores Trillions of Messages — Curious Case of System Design Discord’s Cassandra cluster exhibited serious performance issues that required increasing amounts of effort to just maintain, not improve. In 2017, the Discord team ran 12 Cassandra nodes, storing billions of messages. They migrated their data to ScyllaDB because they were looking for a database that was scalable and fault-tolerant. 39 1 3. 3 [](https://daily.dev/posts/i-worked-with-3-companies-in-3-years-why---my-3-mistakes--z7qqst0t7 "I Worked with 3 companies in 3 years. Why? - My 3 mistakes.") Article gitconnected · 3y I Worked with 3 companies in 3 years. Why? - My 3 mistakes. Ashay Nayak was born in Rajasthan, India, but was not sure about his aspirations. He went to college in 2015 and learned about computer science. During college times, he improved his coding abilities. By the end of 3rd year he was good at coding and knew subjects that were important from an interview perspective. 32 4 4. 4 [](https://daily.dev/posts/mastering-database-replication-an-essential-guide-for-2023-ocoeboncd "Mastering Database Replication: An Essential Guide for 2023") Article gitconnected · 3y Mastering Database Replication: An Essential Guide for 2023 Mastering Database Replication: An Essential Guide for 2023\. Arslan Ahmad: The world of databases might seem convoluted, but the principles guiding them often stem from real-world needs. He says replication is the act of duplicating data from a main source to one or more secondary sources. 14 1 [See all gitconnected archives](/sources/gc/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/gc/best-of/2023/09#page","url":"https://daily.dev/sources/gc/best-of/2023/09","name":"Best gitconnected Posts — September 2023","description":"The most upvoted gitconnected posts from September 2023, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/gc/best-of/2023/09#items","numberOfItems":4,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/10-best-coding-and-programming-interview-books-in-2023-fdbxzbpc2","name":"10 Best Coding and Programming Interview Books in 2023"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/how-discord-stores-trillions-of-messages-curious-case-of-system-design-w1ug8j6yc","name":"How Discord Stores Trillions of Messages — Curious Case of System Design"},{"@type":"ListItem","position":3,"url":"https://daily.dev/posts/i-worked-with-3-companies-in-3-years-why---my-3-mistakes--z7qqst0t7","name":"I Worked with 3 companies in 3 years. 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