--- title: Best RxJS posts of 2024 | daily.dev description: The most upvoted RxJS posts of 2024, curated by the daily.dev community. canonical: https://daily.dev/tags/rxjs/best-of/2024 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/tags/rxjs/best-of/2024 og:type: website og:site_name: daily.dev og:title: Best RxJS posts of 2024 | daily.dev og:description: The most upvoted RxJS posts of 2024, 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 RxJS — 2024 1. 1 [](/posts/mastering-promise-cancellation-in-javascript-pqle7qbcs "Mastering promise cancellation in JavaScript") Article LogRocket · 2y Mastering promise cancellation in JavaScript Promises in JavaScript simplify handling asynchronous operations by avoiding 'callback hell.' The traditional method of resolving or rejecting a promise can now be streamlined using the new \`Promise.withResolvers()\` method, enhancing code readability. However, Promises lack built-in cancellation. Using \`AbortController\` or reactive programming libraries like RxJS with Observables offers more control, including cancellation capabilities. Promises are ideal for single operations, whereas Observables manage data streams, allowing for multiple emissions and cancellations. 164 3 2. 2 [](/posts/rxjs-adoption-guide-overview-examples-and-alternatives-trkszfkji "RxJS adoption guide: Overview, examples, and alternatives") Article LogRocket · 2y RxJS adoption guide: Overview, examples, and alternatives RxJS (Reactive Extensions Library for JavaScript) is a reactive programming library that allows you to work with asynchronous data streams using Observables. Originally part of a Microsoft project to manage events better, RxJS has grown significantly with features like Observables, Observers, operators, Subscriptions, Subjects, and Schedulers. This guide explains the basics of RxJS, including examples on how to set it up, create observables, and manage data streams. Additionally, it discusses the benefits, use cases, and comparisons with other libraries like Bacon.js. 30 1 3. 3 [](/posts/how-i-structure-my-angular-components-with-signals-9g12dyt5x "How I structure my Angular components with Signals") Article This is Angular · 2y How I structure my Angular components with Signals An exploration of how to structure Angular components using signals without external libraries. The approach includes defining states with signals, using Angular's \`input()\` for inputs, and employing \`computed\` for derived states. It emphasizes avoiding asynchronous side-effects in class methods to handle back-pressure better, using RxJS for managing asynchronous events through Subjects and operators, and incorporating effects for task synchronization. 28 1 4. 4 [](/posts/code-smells-in-angular-deep-dive-part-i-xkdk3wmhb "Code Smells in Angular — Deep Dive — Part I") Article Medium · 3y Code Smells in Angular — Deep Dive — Part I This post discusses common code smells in Angular that negatively impact the runtime performance. It covers topics such as the default change detection strategy, binding methods in the template, using trackBy in ngFor, and avoiding memory leaks with multiple subscriptions. 27 5. 5 [](/posts/build-a-next-gen-chat-app-with-ai-and-websockets-in-just-3-hours-with-ben-lesh-and-tracy-lee-vrrjobgu3 "Build a Next-Gen Chat App with AI and WebSockets in Just 3 Hours with Ben Lesh and Tracy Lee") Article This Dot · 2y Build a Next-Gen Chat App with AI and WebSockets in Just 3 Hours with Ben Lesh and Tracy Lee Build a Next-Gen Chat App with AI and WebSockets in Just 3 Hours. The training covered using v0.dev, leveraging AI tools like GitHub Copilot and ChatGPT, creating a monorepo using Nx, refactoring for real-time streaming with WebSockets, and integrating with AstraDB and Cohere for Retrieval-Augmented Generation (RAG). 27 6. 6 [](/posts/advanced-rxjs-operators-you-know-but-not-well-enough-pt-2--mtdx2hop2 "Advanced RxJs Operators You Know But Not Well Enough pt 2.") Article This is Angular · 2y Advanced RxJs Operators You Know But Not Well Enough pt 2. Explores advanced RxJS operators such as forkJoin(), combineLatest(), auditTime(), debounceTime(), pairwise(), raceWith(), iff(), and defer(). It provides detailed examples and use cases for each operator, highlighting their practical applications and differences. 24 7. 7 [](/posts/handling-errors-with-tosignal-in-angular-xqkgwcoha "Handling Errors with toSignal in Angular") Article Medium · 2y Handling Errors with toSignal in Angular In Angular, the \`toSignal\` function converts an Observable into a reactive signal. However, errors emitted by the Observable are propagated each time the signal’s value is accessed. To control error handling more effectively and mimic the behavior of Angular’s \`async\` pipe, developers can use the \`rejectErrors\` option. This option ensures that the signal maintains the last successfully emitted value indefinitely, making it useful for maintaining application stability. 23 8. 8 [](/posts/top-rxjs-operators-in-angular-xvl8pudvv "Top RxJs Operators in Angular") Article Community Picks · 2y Top RxJs Operators in Angular Learn and use important RxJs operators in Angular. This article explains the most commonly used operators in RxJs, such as map, filter, tap, and take. Understanding these operators can make data handling in Angular applications easier and save time. 22 8 9. 9 [](/posts/angular-s-effect-use-cases-enforced-asynchrony-ekrlplqk7 "Angular's effect(): Use Cases & Enforced Asynchrony") Article This is Angular · 2y Angular's effect(): Use Cases & Enforced Asynchrony Angular's \`effect()\` function is a tool for handling side effects in applications, but it works asynchronously, unlike \`computed()\` which runs synchronously. Although there's debate about using \`effect()\`, it has valid use cases like logging changes or fetching data asynchronously. Misusing it, however, can cause bugs due to its asynchronous nature. Angular's \`computed()\` function is preferred for synchronous updates to ensure predictability. 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