Welcome to my (attempt of) Digital Garden. I write about web development, tech, and life. I hope you enjoy it!https://gustavocd.dev/https://gustavocd.dev/distributed-systems/what-is-an-invariant/https://gustavocd.dev/distributed-systems/what-is-an-invariant/Imagine you have $100 in your bank account. One morning, you're running late for work and stop at an ATM...Fri, 19 Jun 2026 10:17:04 GMThttps://gustavocd.dev/fundamentals/coding-interview-patterns-frequency-counter/https://gustavocd.dev/fundamentals/coding-interview-patterns-frequency-counter/Frequency counter technique for coding interview exercises with TypeScriptThu, 05 Feb 2026 15:17:04 GMThttps://gustavocd.dev/engineering/typescript/typescript-cheat-sheet/https://gustavocd.dev/engineering/typescript/typescript-cheat-sheet/TypeScript Cheat sheet for the most common functions and tricks used in coding interviews...Sat, 29 Nov 2025 10:17:04 GMThttps://gustavocd.dev/architecture/observer-pattern/https://gustavocd.dev/architecture/observer-pattern/In this article we'll explore the Observer pattern in Go, this pattern allows us to keep your objects in the know...Tue, 10 Jun 2025 12:27:20 GMThttps://gustavocd.dev/architecture/factory-pattern/https://gustavocd.dev/architecture/factory-pattern/In this article we'll explore the Factory pattern in Go, this pattern allows us to create an instance...Wed, 18 Sep 2024 20:27:20 GMThttps://gustavocd.dev/fundamentals/coding-interview-patterns-two-pointers/https://gustavocd.dev/fundamentals/coding-interview-patterns-two-pointers/Master the two pointers technique for coding interviews. Interactive examples, complexity analysis, and practical tips for solving array and string problems efficiently.Wed, 10 Jul 2024 16:27:20 GMThttps://gustavocd.dev/engineering/go/go-cheat-sheet/https://gustavocd.dev/engineering/go/go-cheat-sheet/Go Cheat sheet for the most common functions and tricks used in coding interviews...Thu, 18 Jan 2024 20:27:20 GMThttps://gustavocd.dev/engineering/python/python-cheat-sheet/https://gustavocd.dev/engineering/python/python-cheat-sheet/Python Cheat sheet for the most common functions and tricks used in coding interviews...Wed, 15 Nov 2023 19:07:04 GMThttps://gustavocd.dev/career/a-studying-technique-sq3r/https://gustavocd.dev/career/a-studying-technique-sq3r/SQ3R is a reading comprehension method named for its five steps: survey, question, read, recite, and review...Wed, 27 Sep 2023 03:38:04 GMThttps://gustavocd.dev/platform/vim-cheat-sheet/https://gustavocd.dev/platform/vim-cheat-sheet/Vim Cheat Sheet for the most common commands and shortcuts I use on a daily basis...Sat, 19 Aug 2023 17:07:04 GMThttps://gustavocd.dev/engineering/go/structured-logging-with-slog-in-go/https://gustavocd.dev/engineering/go/structured-logging-with-slog-in-go/When debugging our applications, having information about its status is very important. One way to achieve this is through...Fri, 04 Aug 2023 23:07:04 GMThttps://gustavocd.dev/distributed-systems/server-sent-events-in-go/https://gustavocd.dev/distributed-systems/server-sent-events-in-go/In today's software engineering landscape, real-time communication plays a crucial role in many modern applications...Sat, 24 Jun 2023 23:07:04 GMThttps://gustavocd.dev/architecture/8-design-patterns-you-should-know/https://gustavocd.dev/architecture/8-design-patterns-you-should-know/The other day I was watching videos on YouTube, and suddenly I came across an interesting one called...Fri, 10 Mar 2023 23:52:04 GMThttps://gustavocd.dev/fundamentals/what-is-a-web-api/https://gustavocd.dev/fundamentals/what-is-a-web-api/Let's talk about web APIs and what are some aspects/features that make them good...Fri, 24 Feb 2023 20:21:04 GMThttps://gustavocd.dev/engineering/typescript/testing-rtk-query-with-msw/https://gustavocd.dev/engineering/typescript/testing-rtk-query-with-msw/When we work with web-based applications, it's common to fetch data via HTTP calls. There are several options to do so...Sat, 11 Feb 2023 14:45:04 GMThttps://gustavocd.dev/platform/improving-my-shell-performance/https://gustavocd.dev/platform/improving-my-shell-performance/For years I've been using oh-my-zsh as my terminal framework for the zsh shell...Thu, 26 Jan 2023 21:24:04 GMThttps://gustavocd.dev/engineering/rust/5-techniques-to-learn-rust-faster/https://gustavocd.dev/engineering/rust/5-techniques-to-learn-rust-faster/One of the first things you hear about when starting to learn Rust is that: it's hard to understand, it has a steep learning curve...Sat, 22 Jan 2022 21:02:32 GMThttps://gustavocd.dev/engineering/go/learning-go-book-review/https://gustavocd.dev/engineering/go/learning-go-book-review/Tl;dr is a great book to learn about Go in general from the basics to advanced concepts such as: testing, cgo, concurrency, and…Tue, 18 Jan 2022 23:11:32 GMThttps://gustavocd.dev/career/tech-i-am-in-exploring-2022/https://gustavocd.dev/career/tech-i-am-in-exploring-2022/Hello everyone, and happy new year! 🥳 every new year is a fresh start for all of us...Wed, 12 Jan 2022 22:30:32 GMThttps://gustavocd.dev/platform/versionando-binarios-en-go/https://gustavocd.dev/platform/versionando-binarios-en-go/En este artículo aprenderemos como añadir una versión a nuestros binarios en Go...Sat, 11 Sep 2021 13:30:32 GMThttps://gustavocd.dev/engineering/go/functional-options/https://gustavocd.dev/engineering/go/functional-options/Recientemente me encontraba escribiendo un paquete en Go y me vi en la necesidad de proveer al usuario de mi paquete...Sat, 13 Feb 2021 12:58:32 GMThttps://gustavocd.dev/engineering/go/slices-en-go/https://gustavocd.dev/engineering/go/slices-en-go/Un slice representa una secuencia de elementos de un mismo tipo de longitud variable...Mon, 21 Dec 2020 15:51:32 GMThttps://gustavocd.dev/engineering/go/arreglos-en-go/https://gustavocd.dev/engineering/go/arreglos-en-go/Los Arreglos son aggregate types; sus valores son agrupaciones de otros valores en memoria...Thu, 17 Dec 2020 17:10:32 GMThttps://gustavocd.dev/engineering/javascript/fetching-data-con-react-y-xstate/https://gustavocd.dev/engineering/javascript/fetching-data-con-react-y-xstate/Cuando estamos trabajando con frameworks del lado del cliente tales como React, Angular, Vue, etc una de las tareas más comunes...Sun, 15 Mar 2020 17:10:32 GMThttps://gustavocd.dev/engineering/go/condicional-switch-en-go/https://gustavocd.dev/engineering/go/condicional-switch-en-go/En esta ocasión quiero hablarles de otra de las formas más conocidas y usadas que tenemos en Go para alterar el flujo de ejecución...Sun, 16 Feb 2020 14:10:32 GMThttps://gustavocd.dev/engineering/go/condicional-if-en-go/https://gustavocd.dev/engineering/go/condicional-if-en-go/En esta ocasión quiero hablarles de una de las formas más conocidas y usadas que tenemos en Go para alterar el flujo de ejecución...Sun, 10 Nov 2019 14:10:32 GMThttps://gustavocd.dev/fundamentals/introduccion-a-graphql/https://gustavocd.dev/fundamentals/introduccion-a-graphql/En está ocasión me gustaría hablarles acerca de un tema que me gusta mucho y que he estado usando en los últimos meses...Sun, 21 Jul 2019 23:31:32 GMThttps://gustavocd.dev/fundamentals/entendiendo-jwt/https://gustavocd.dev/fundamentals/entendiendo-jwt/JSON Web Token (JWT) es un estándar abierto que define una manera compacta y autónoma para transmitir de forma segura información...Sun, 14 Jul 2019 21:28:32 GMThttps://gustavocd.dev/engineering/go/introduccion-a-go/https://gustavocd.dev/engineering/go/introduccion-a-go/Go es uno de los lenguajes de programación con mayor crecimiento en los últimos años, su curva de aprendizaje es relativamente corta...Thu, 11 Jul 2019 22:05:32 GMThttps://gustavocd.dev/engineering/javascript/array-destructuring-en-js/https://gustavocd.dev/engineering/javascript/array-destructuring-en-js/Uno de los principales objetivos que trajo consigo ES6 fué el hecho de hacer a JavaScript un lenguaje de programación más declarativo...Sun, 17 Mar 2019 15:18:32 GMT