Luciano Mammino 📙 Node.js Design Patterns

@loige.co

2078 Followers 878 Following

AWS Serverless Hero & MVP. Senior Architect fourTheorem, author of 📕 http://nodejsdp.link & ✉️ http://fstack.link Node.js, JavaScript, Rust 🦀 & Cloud ☁️

Infographic titled “Node.js Environment Variables: Simple until they bite you.” On a dark, neon green and cyan tech-style background, five panels explain key pitfalls and best practices: (1) everything in process.env is a string, for example PORT becomes "3000"; (2) the “false” trap, where "false" is still truthy in JavaScript; (3) built-in .env loading in modern Node.js with --env-file; (4) layered .env files, where later files win but OS environment variables still override; and (5) security risks, showing child processes inheriting secrets by default. A green banner at the bottom highlights the best practice: use one validated config module, fail fast, and keep secrets out of environment variables in production. The full guide URL appears at the bottom: nodejsdesignpatterns.com/blog/nodejs-environment-variables.
Painterly illustration of a warm, softly lit desk scene with a laptop open to the FullStack Bulletin farewell page, surrounded by a coffee mug, notebooks, books, sticky notes, and scattered papers, evoking a reflective final-send moment.
AWS Bites Podcast cover art showing a bed in a grassy field with a huge rock resting on top of it, under the title ‘getting started with Amazon Bedrock.’ Eoin appears on the left behind the rock, shading his eyes, while Luciano stands on the right. The scene is warm, playful, and photorealistic.
Animated illustration of a path traversal attack. A maze shows two zones: a green "Safe Zone" (/images/) with a unicorn emoji representing legitimate files, and a red "Forbidden Zone" (/etc/) with a locked padlock and sensitive files like passwd. A detective emoji follows glowing "../" symbols through the maze—directory traversal sequences. The URL transforms from "unicorn.jpg" to "../../../../etc/passwd". Upon arrival, the lock opens, the detective becomes a devil emoji, and "SECURITY BREACH" flashes red.
Cartoon illustration in flat colors: a smiling developer in a blue hoodie points upward while holding a green “Node.js FETCH GUIDE” book. Above him, speech bubbles read “npm axios”, “http/https”, and “fetch()” with a question mark. On the right, a cool turtle wearing sunglasses rides a rocket labeled “V8”; a checklist and stopwatch sit on the desk against a soft, patterned sky background.
Open Graph banner with a blurred bookshelf background and the text “Node.js Design Patterns: Fourth Edition is out!” plus the website “loige.co”.
Noir-style cartoon crime scene: a detective kneels with a magnifying glass over an AWS API Gateway logo on the floor, surrounded by “DO NOT CROSS” tape, evidence markers, and dropped keys and a wallet under moody purple/red-blue lights.
Promotional graphic on a pink-to-orange gradient background: three angled iPhone mockups show pages from the “Crafting Lambda Functions in Rust” e-book (text and diagrams), with bold “new RELEASE!” in the top-left and the title “Crafting Lambda Functions in Rust” in the bottom-right.
Cartoon-style AWS Bites podcast artwork with the headline “exploring ECS Managed Instances.” Luciano Mammino and Eoin Shanaghy (AWS Bites, fourTheorem) sit on a dock in a hazy container yard: Luciano looks skeptical while Eoin looks surprised with hands raised. The background is a port full of shipping containers and a crane moving them, evoking Docker and running containers; to the right there’s a futuristic blue, server-like box with a glowing Amazon ECS logo.
Cover art for “Reading and Writing Files in Node.js,” featuring a cartoon version of Luciano. On the left, he’s writing on paper with a pen; on the right, he’s reading a newspaper with a focused expression. The illustration visually represents the concepts of writing and reading files in Node.js.
Top-down view of an open book held by two hands on a white table, showing Chapter 6 titled “Coding with Streams” from Node.js Design Patterns by Luciano Mammino and Mario Casciaro; cozy gray sweaters and clean layout emphasize the chapter intro text.
Close-up of a person in a black leather jacket holding the 4th edition of “Node.js Design Patterns” by Packt, featuring a black cover with a purple wave graphic and small author headshots (Luciano Mammino and Mario Casciaro), against a light brick background.
Podcast cover image for AWS Bites. At center, a silver headless mannequin in a yellow T-shirt reading ‘Headless CMS Club.’ Above it, the Strapi logo with the title ‘Headless CMS for Serverless projects.’ On the left, co-host Eoin (grey hoodie) looks up and smiles; on the right, co-host Luciano (black T-shirt) faces the camera. The scene is a bright, minimalist room with wooden floor and potted plants, suggesting a casual studio vibe.
Podcast thumbnail: steampunk café with two top-hatted men, the host on the left (Luciano Mammino) and the guest on the right (Mark Sailes), drinking Java coffee amid brass machinery; a glowing moka pot with a Java logo on the table; white steam clouds; title text “Java & Lambda” overhead.
Podcast cover for AWS Bites. A cartoon ghost parody of the Kiro logo sticks its tongue out and flashes rock signs in the center. The title reads “Coding with Kiro,” with “Vibe” crossed out and “Spec” added. Bottom left, one host in a blue hoodie with folded arms. Bottom right, the other host in a gray hoodie holding a MacBook and grinning. Dark alley background with a street lamp.
A desk setup showing four connected screens displaying a retro pixel-style wallpaper with design tool icons. The screens include two MacBooks, an external monitor, and an iPad, demonstrating the use of multiple Apple devices as extended displays in a creative workspace.
A picture of a terminal with the following fish shell code: for dir in (string split : $PATH) if test -d $dir find $dir -type f -perm +111 2>/dev/null end end | sort | uniq
Cartoon-style illustration of Eoin (left) and Luciano (right) from the AWS Bites Podcast reacting with surprise and excitement. Eoin has his hands raised and mouth open, while Luciano points toward a glowing database icon in the center. The title above reads “First look at AMAZON DSQL” in playful lettering.
A comic-style image illustrating a debugging moment about SHA-1 hashing. The top panel shows Node.js v24.0.2 with a code snippet that hashes the string "banana" using crypto.createHash('sha1'), resulting in the hash 250e77f12a5ab6972a0895d290c4792f0a326ea8. The middle panel shows a confused cartoon character and a terminal command echo "banana" | sha1 producing a different hash: 8a1aaf746ada2a80fab03a58c91575ffe82885ac. The bottom panel shows the same character now smiling and pointing upwards, next to the corrected command echo -n "banana" | sha1, which returns the same hash as Node.js. The image highlights that the echo command adds a newline character unless -n is used.
Cover of the book "Node.js Design Patterns, Fourth Edition" by Luciano Mammino and Mario Casciaro. The design features a dark background with a dynamic purple and blue wave pattern. At the top, there is a label saying "Expert Insight" and a hexagon badge that reads "Early Access." The subtitle reads: "Level up your Node.js skills and design production-grade applications using proven techniques." At the bottom, there are black-and-white photos of the authors and the publisher logo "<packt>".
A humorous race scene in a forest path, showing a group of runners mid-stride. The runners' faces have been replaced with logos or meme faces representing AWS services and podcast hosts. Bold yellow-green text at the top asks: “Is App Runner Better Than Fargate?” The image playfully suggests a competition between AWS App Runner and Fargate, with an energetic and slightly chaotic vibe.
A dark-themed terminal screenshot showing Node.js v23.11.0 and a console.log() call with a format string. The command console.log('Event: %j', {foo: 'bar'}) is displayed, with a yellow arrow pointing to the resulting JSON string {"foo":"bar"}. A label below reads 'JSON.stringify(...)' to explain the %j placeholder behavior.