https://www.adeshgg.in Software engineering essays on React, Next.js, system design, databases, and backend architecture by Adesh Gupta https://www.adeshgg.in/blog/rate-limiting https://www.adeshgg.in/blog/rate-limiting Learn rate limiting from first principles: interactive playgrounds for Token Bucket, Leaky Bucket & more. Includes Redis + Lua implementation details. Tue, 03 Feb 2026 00:00:00 GMT https://www.adeshgg.in/blog/database-replication https://www.adeshgg.in/blog/database-replication Learn database replication from first principles: understand WAL before implementing PostgreSQL read replicas with Docker. Covers async and sync modes. Wed, 08 Oct 2025 00:00:00 GMT https://www.adeshgg.in/blog/use-transition-hook https://www.adeshgg.in/blog/use-transition-hook Learn React useTransition from first principles: why blocking renders hurt UX, how concurrent rendering works, and patterns for responsive filtering and forms. Mon, 22 Sep 2025 00:00:00 GMT https://www.adeshgg.in/blog/types-in-javascript https://www.adeshgg.in/blog/types-in-javascript Master JavaScript types from the ground up: typeof quirks, NaN behavior, boxing, and coercion explained through history and practical examples for interviews. Tue, 03 Jun 2025 00:00:00 GMT https://www.adeshgg.in/blog/react-server-components https://www.adeshgg.in/blog/react-server-components Understand React Server Components from first principles: SSR vs RSC, the actual RSC payload format, hydration mechanics, and how client/server components compose. Wed, 14 May 2025 00:00:00 GMT