#node.js

Node-based user interfaces offer an intuitive and powerful way to represent complex data flows and processes. In this interactive 3-hour workshop, you’ll learn how to create engaging diagram UIs using React and the popular React Flow library. We’ll start by exploring key libraries for creating custom diagram UIs, comparing their strengths, differences, and most effective use cases. Focusing on React Flow, we’ll then build a workflow application together, introducing features such as custom nodes and edges, drag-and-drop functionality, state management, minimap and zoom controls, auto- layout, and property-editing sidebar. You’ll discover how to leverage open-source UI components designed for diagramming to enhance visual appeal and learn how to extend diagrams with custom functionality. We’ll also look at existing tools and products that can streamline your development process – so you can concentrate on implementing your business logic efficiently. By the end of this workshop, you’ll know how to unlock the potential of node-based UIs in React, enabling you to create rich, interactive applications tailored precisely to your project’s needs.Workshop Agenda:Introduction to Diagram LibrariesBuilding a Workflow Application with React FlowImplementing Advanced Interaction and Usability FeaturesEnhancing the User ExperienceExtending and Scaling Your Node-based UIPlease note that this workshop assumes a comfortable working knowledge of React, so we can focus on building advanced features right from the start.

Large Language Models (LLMs) are powerful, but they often lack real-time knowledge. Retrieval-Augmented Generation (RAG) bridges this gap by fetching relevant information from external sources before generating responses. In this workshop, we’ll explore how to build an efficient RAG pipeline in Node.js using RSS feeds as a data source. We’ll compare different vector databases (FAISS, pgvector, Elasticsearch), embedding methods, and testing strategies. We’ll also cover the crucial role of chunking—splitting and structuring data effectively for better retrieval performance.Prerequisites- Good understanding of JavaScript or TypeScript- Experience with Node.js and API development- Basic knowledge of databases and LLMs is helpful but not required
Agenda📢 Introduction to RAG💻 Demo - Example Application (RAG with RSS Feeds)📕 Vector Databases (FAISS, pgvector, Elasticsearch) & Embeddings🛠️ Chunking Strategies for Better Retrieval🔬 Testing & Evaluating RAG Pipelines (Precision, Recall, Performance)🏊‍♀️ Performance & Optimization Considerations🥟 Summary & Q&A

SQLite is having its Renaissance. It's being used in many projects and companies. Bun runtime has its implementation of sqlite, Turso is a product on top of SQLite, and the Ruby on Rails framework dropped all its dependency on Redis in favor o SQLite for things like Caching and Queues.Node.js version 22.5.0 introduced the `node:sqlite` module. It's an experimental module that allows you to use SQLite in a very Node.js way, without any external dependency.In this workshop, you will learn how to use SQLite in Node.js. We will explore the current `node:sqlite` features and how to use them. We will also explore the future of SQLite in Node.js.

Learn the full potential of TypeScript by using advanced features like Type Inference, Type Guards, Generics, Transformers, and Utility Types with asynchronous programming in both Node.js (using Express.js) and Bun.js (using Hono.js), all while understanding best practices for building strongly typed APIs with different databases.OverviewIn this workshop, we’ll kick off with a discussion on the recent updates in Node.js and Bun.js, focusing on their built-in TypeScript support. You'll learn how to set up TypeScript in both runtimes and create strictly typed APIs using Express.js and Hono.js. Through hands-on demos, we'll explore integration with various databases like MongoDB and Postgres, leveraging advanced TypeScript features to build robust applications. By the end of the workshop, you'll be equipped with the knowledge to optimize TypeScript code for performance and design patterns, ensuring your APIs are both efficient and maintainable.Learning Goals- Introduction to Node.js’s and Bun.js’s TypeScript support- Advanced TypeScript Features: Generics, Type Guards, Mapped Types, etc.- Middleware and Dependency Injection with Express.js and Hono.js- Design Pattern and Performance Enhancements in TypeScript- Unit and Integration Testing with TypeScript- Database Integration: MongoDB, Postgres, Prisma, and others- Best Practices for Robust API Development in both Node.js and Bun.js

In this workshop, we'll cover the top 10 most common vulnerabilities and critical security risks identified by OWASP, which is a trusted authority in Web Application Security.During the workshop, you will learn how to prevent these vulnerabilities and develop the ability to recognize them in web applications.The workshop includes 10 code challenges that represent each of the OWASP's most common vulnerabilities. There will be given hints to help solve the vulnerabilities and pass the tests.The trainer will also provide detailed explanations, slides, and real-life examples in Node.js to help understand the problems better. Additionally, you'll gain insights from a Node.js Maintainer who will share how they manage security within a large project.It's suitable for Node.js Developers of all skill levels, from beginners to experts, it requires a general knowledge of web application and JavaScript.
Table of contents:- Broken Access Control- Cryptographic Failures- Injection- Insecure Design- Security Misconfiguration- Vulnerable and Outdated Components- Identification and Authentication Failures- Software and Data Integrity Failures- Security Logging and Monitoring Failures- Server-Side Request Forgery

Node.js test runner is modern, fast, and doesn't require additional libraries, but understanding and using it well can be tricky.You will learn how to use Node.js test runner to its full potential.We'll show you how it compares to other tools, how to set it up, and how to run your tests effectively. During the workshop, we'll do exercises to help you get comfortable with filtering, using native assertions, running tests in parallel, using CLI, and more. We'll also talk about working with TypeScript, making custom reports, and code coverage.

The workshop overviews key architecture principles, design patterns, and technologies used to build microservices in the Node.js stack. It covers the theory of the GRPC framework and protocol buffers mechanism, as well as techniques and specifics of building isolated services using the monorepo approach with lerna and yarn workspaces, TypeScript. The workshop includes a live practical assignment to create a currency converter application that follows microservices paradigms. It fits the best developers who want to learn and practice GRPC microservices pattern with the Node.js platform.
Prerequistes:- Good understanding of JavaScript or TypeScript- Experience with Node.js and writing Backend applications- Preinstall Node.js, npm- Preinstall Protocol Buffer Compiler- We prefer to use VSCode for a better experience with JavaScript and TypeScript (other IDEs are also ok)

Platformatic allows you to rapidly develop GraphQL and REST APIs with minimal effort. The best part is that it also allows you to unleash the full potential of Node.js and Fastify whenever you need to. You can fully customise a Platformatic application by writing your own additional features and plugins. In the workshop, we’ll cover both our Open Source modules and our Cloud offering:- Platformatic OSS (open-source software) — Tools and libraries for rapidly building robust applications with Node.js (https://oss.platformatic.dev/).- Platformatic Cloud (currently in beta) — Our hosting platform that includes features such as preview apps, built-in metrics and integration with your Git flow (https://platformatic.dev/). 
In this workshop you'll learn how to develop APIs with Fastify and deploy them to the Platformatic Cloud.

This workshop aims to give you an introductory module on the general aspects of Open Source. Follow Claudio Wunder from the OpenJS Foundation to guide you on how the governance model of Node.js work, how high-level decisions are made, and how to land your very first contribution. At the end of the workshop, you'll have a general understanding of all the kinds of work that the Node.js project does (From Bug triage to deciding the Next-10 years of Node.js) and how you can be part of the bigger picture of the JavaScript ecosystem.

The following technologies and soft skills might be needed):
  - Basic understanding of Git & GitHub interface
  - Professional/Intermediate English knowledge for communication and for allowing you to contribute to the Node.js org (As all contributions require communication within GitHub Issues/PRs)
  - The workshop requires you to have a computer (Otherwise, it becomes difficult to collaborate, but tablets are also OK) with an IDE setup, and we recommend VS Code and we recommend the GitHub Pull Requests & Issues Extension for collaborating with Issues and Pull Requests straight from the IDE.

The following themes will be covered during the workshop:
- A recap of some of GitHub UI features, such as GitHub projects and GitHub Issues
- We will cover the basics of Open Source and go through Open Source Guide
- We will recap Markdown
- We will cover Open Source governance and how the Node.js project works and talk about the OpenJS Foundation
  - Including all the ways one might contribute to the Node.js project and how their contributions can be valued
- During this Workshop, we will cover Issues from the nodejs/nodejs.dev as most of them are entry-level and do not require C++ or deep technical knowledge of Node.js.
  - Having that said, we still recommend enthusiast attendees that want to challenge themselves to "Good First Issues" from the nodejs/node (core repository) if they wish.
  - We're going to allow each attendee to choose an issue or to sit together with other attendees and tackle issues together with Pair Programming through VS Code Live Share feature
    - We can also do Zoom breakrooms for people that want to collaborate together
  - Claudio will be there to give support to all attendees and, of course, answer any questions regarding Issues and technical challenges they might face
  - The technologies used within nodejs/nodejs.dev are React/JSX, Markdown, MDX and Gatsby. (No need any knowledge of Gatsby, as most of the issues are platform agnostic)
- By the end of the Workshop, we'll collect all (make a list) the contributors who successfully opened a Pull Request (even if it's a draft) and recognise their participation on Social media.

Have you ever struggled with designing and structuring your Node.js applications? Building applications that are well organised, testable and extendable is not always easy. It can often turn out to be a lot more complicated than you expect it to be. In this live event Matteo will show you how he builds Node.js applications from scratch. You’ll learn how he approaches application design, and the philosophies that he applies to create modular, maintainable and effective applications.

Level: intermediate

Passwordless authentication may seem complex, but it is simple to add it to any app using the right tool.
We will enhance a full-stack JS application (Node.JS backend + React frontend) to authenticate users with OAuth (social login) and One Time Passwords (email), including:- User authentication - Managing user interactions, returning session / refresh JWTs- Session management and validation - Storing the session for subsequent client requests, validating / refreshing sessions
At the end of the workshop, we will also touch on another approach to code authentication using frontend Descope Flows (drag-and-drop workflows), while keeping only session validation in the backend. With this, we will also show how easy it is to enable biometrics and other passwordless authentication methods.
Table of contents- A quick intro to core authentication concepts- Coding- Why passwordless matters
Prerequisites- IDE for your choice- Node 18 or higher

In this workshop we'll cover the basics of GraphQL, and then use that knowledge to build a backend using SDL. Once we've created our schema, we'll run it locally, deploy to production, and create deployment branches for any changes to our schema. We'll finish the workshop by fetching data from our backend from the frontend, as well as adding authentication to lock down data access!
Mac setup with Node, and NPM (if you wish to follow along locally). Otherwise an account with CodeSandbox would do.

Learn the ways of the clinic suite of tools, which help you detect performance issues in your Node.js applications. This workshop walks you through a number of examples, and the knowledge required to do benchmarking and debug I/O and Event Loop issues.

npm and security, how much do you know about your dependencies?Hack-along, live hacking of a vulnerable Node app https://github.com/snyk-labs/nodejs-goof, Vulnerabilities from both Open source and written code. Encouraged to download the application and hack along with us.Fixing the issues and an introduction to Snyk with a demo.Open questions.

How to build a fullstack GraphQL application (Postgres + NestJs + React) in the shortest time possible.
All beginnings are hard. Even harder than choosing the technology is often developing a suitable architecture. Especially when it comes to GraphQL.
In this workshop, you will get a variety of best practices that you would normally have to work through over a number of projects - all in just three hours.
If you've always wanted to participate in a hackathon to get something up and running in the shortest amount of time - then take an active part in this workshop, and participate in the thought processes of the trainer.

The workshop gives a practical perspective of key principles needed to develop, build, and maintain a set of microservices in the Node.js stack. It covers specifics of creating isolated TypeScript services using the monorepo approach with lerna and yarn workspaces. The workshop includes an overview and a live exercise to create cloud environment with Pulumi framework and Azure services. The sessions fits the best developers who want to learn and practice build and deploy techniques using Azure stack and Pulumi for Node.js.

Fastify is an HTTP framework for Node.js that focuses on providing a good developer experience without compromising on performance metrics. What makes Fastify special are not its technical details, but its community which is wide open for contributions of any kind. Part of the secret sauce is Fastify plugin architecture that enabled developers to write more than a hundred plugins. This hands-on workshop is structured around a series of exercises that covers from basics "hello world", to how to structure a project, perform database access and authentication.

Next.js is a compelling framework that makes many tasks effortless providing many out-of-the-box solutions. But when it comes to authentication and user security, it's our mission to make it reliable, secure, and efficient. In this workshop, we'll focus on different user authentication and session management approaches, starting from a custom authentication strategy (that we will build together), and ending learning how to identify and integrate the right auth provider (Auth0, Firebase, etc.) for any app.
Table of contents:- A brief introduction to Next.js- Building an authentication mechanism from scratch- Why we should avoid custom authentication- How to identify the proper authentication mechanism and provider- Integrating NextAuth.js, Auth0, Firebase, or any other provider

The workshop overviews key architecture principles, design patterns, and technologies used to build microservices in the Node.js stack. It covers the theory of the GRPC framework and protocol buffers mechanism, as well as techniques and specifics of building isolated services using the monorepo approach with lerna and yarn workspaces, TypeScript. The workshop includes a live practical assignment to create a currency converter application that follows microservices paradigms. The "Microservices in Node.js with GRPC" workshop fits the best developers who want to learn and practice GRPC microservices pattern with the Node.js platform.

This workshop will walk you through writing a module in TypeScript that can be consumed users of Deno, Node and the browsers. I will explain how to set up formatting, linting and testing in Deno, and then how to publish your module to deno.land/x and npm. We’ll start out with a quick introduction to what Deno is.

Node.js has become an increasingly popular language to build and deploy backend APIs. In a world of legacy CMSs adopting decoupled implementations, plenty of frameworks have sprung up to classify themselves as "headless" CMSs, designed from the start to provide an easy way to personalize content models, administer permissions and authentication, and serve a content API quickly.
Strapi, one of the leaders in this space, has recently released their v4 version of the framework, and with Platform.sh it can be deployed alongside a number of frontends within the same project, giving a drastically simplified development experience working with decoupled sites. In this workshop, we'll deploy a Strapi demo application, which has been configured to serve a restaurant review site.
Piece piece you will add database services, tests, and frontends, all within the safety of isolated development environments. At the end, each user will have a functioning decoupled site, and some greater understanding of working with decoupled sites in production.

We’ll go through setting up Sentry step--step to get visibility into our frontend and backend. Once integrated, we will track and triage errors + transactions surfaced Sentry from our services to understand why/where/how errors and slowdowns occurred within our application code.

“You’ll never believe where objects come from in JavaScript.”
“These 10 languages are worse than JavaScript in asynchronous programming.”
Let’s explore some aspects of JavaScript that you might take for granted in the clickbaitest nodecongress.com workshop.
To attend this workshop you only need to be able to write and run NodeJS code on your computer. Both junior and senior developers are welcome.
Objects are from Mars, functions are from Venus
Let’s deep-dive into the ins and outs of objects and then zoom out to see modules from a different perspective. How many ways are there to create objects? Are they all that useful? When should you consider using them?
If you’re now thinking “who cares?“, then this workshop is probably for you.
Asynchronous JavaScript: the good? parts
Let’s have an honest conversation.
I mean… why, oh why, do we need to bear with all this BS? My guess is that it depends on perspective too. Let’s first assume a hard truth about it: it could be worse… then maybe we can start seeing the not-so-bad-even-great features of JavaScript regarding non-blocking programs.

Ready to kickstart your freelance career or just getting started on your freelance journey? You’re in the right spot. Learn the tricks of the trade from the industry’s most experienced freelancers.
The independent talent movement is the future of work. If you’re considering leaving full-time employment for a career as a freelancer, now is the time to find your successful space in the independent talent workforce. More people are working freelance today than ever before, with the freelance marketplace now contributing $1.2 trillion to the US economy. Some of the most in-demand roles for freelancers right now are senior developers with professional experience in React, Python, Blockchain, QA, and Node.js.
This workshop will help you design a sustainable and profitable full-time (or part-time) freelancing/contracting career. We will give you tools, tips, best practices, and help you avoid common pitfalls.

Prisma is an open-source ORM for Node.js and TypeScript. In this workshop, you’ll learn the fundamental Prisma workflows to model data, perform database migrations and query the database to read and write data. You’ll also learn how Prisma fits into your application stack, building a REST API and a GraphQL API from scratch using SQLite as the database.
Table of contents:
- Setting up Prisma, data modeling & migrations- Exploring Prisma Client to query the database- Building REST API routes with Express- Building a GraphQL API with Apollo Server

This workshop discusses the challenges Enterprises are facing when scaling the data tier to support multi-region deployments and serverless environments. Serverless edge functions and lightweight container orchestration enables applications and business logic to be easily deployed globally, often leaving the database as the latency and scaling bottleneck.
Join us to understand how PolyScale.ai solves these scaling challenges intelligently caching database data at the edge, without sacrificing transactionality or consistency. Get hands on with PolyScale for implementation, query observability and global latency testing with edge functions.
Table of contents- Introduction to PolyScale.ai- Enterprise Data Gravity- Why data scaling is hard- Options for Scaling the data tier- Database Observability- Cache Management AI- Hands on with PolyScale.ai