--- title: Best ByteGrad posts — January 2025 | daily.dev description: The most upvoted ByteGrad posts from January 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/bytegrad/best-of/2025/01 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/bytegrad/best-of/2025/01 og:type: website og:site_name: daily.dev og:title: Best ByteGrad posts — January 2025 | daily.dev og:description: The most upvoted ByteGrad 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 ByteGrad — January 2025 1. 1 [](https://daily.dev/posts/next-js-15-authentication-complete-guide-best-practices-pitfalls--0fiit4ird "Next.js 15 Authentication COMPLETE Guide (+ Best Practices, Pitfalls)") Video ByteGrad · 2y Next.js 15 Authentication COMPLETE Guide (+ Best Practices, Pitfalls) This post provides a comprehensive guide on implementing authentication in Next.js 15, emphasizing server-side security, proper use of cookies and tokens, and the importance of roles and permissions. It highlights best practices and pitfalls to avoid when using server components and middleware to protect routes and actions. Additionally, it underscores the benefits of using third-party services for authentication to avoid errors and save development time. 278 6 2. 2 [](https://daily.dev/posts/build-a-next-js-saas-from-scratch-step-by-step--7qv0jkuhy "Build A Next.js SaaS From Scratch (Step-By-Step)") Video ByteGrad · 2y Build A Next.js SaaS From Scratch (Step-By-Step) Learn to build a full-stack Next.js SaaS application from scratch. The tutorial covers the creation of a landing page, a private dashboard for tracking expenses, user authentication, integration with Stripe for payments, and adding analytics using Posthog. Key Next.js concepts such as server components, routing, and database interaction are also explained. 129 2 [See all ByteGrad archives](/sources/bytegrad/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/bytegrad/best-of/2025/01#page","url":"https://daily.dev/sources/bytegrad/best-of/2025/01","name":"Best ByteGrad Posts — January 2025","description":"The most upvoted ByteGrad posts from January 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/bytegrad/best-of/2025/01#items","numberOfItems":2,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/next-js-15-authentication-complete-guide-best-practices-pitfalls--0fiit4ird","name":"Next.js 15 Authentication COMPLETE Guide (+ Best Practices, Pitfalls)"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/build-a-next-js-saas-from-scratch-step-by-step--7qv0jkuhy","name":"Build A Next.js SaaS From Scratch (Step-By-Step)"}]},{"@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":"ByteGrad","item":"https://daily.dev/sources/bytegrad"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/bytegrad/best-of"},{"@type":"ListItem","position":5,"name":"January 2025"}]}]} ```