RxDB | JavaScript Database

🚀 RxDB 16.0.0 is here! 🎉 Enjoy major refactorings, simpler naming, OPFS & NodeFilesystem boosts, the end of the LokiJS storage, and easy data migration from v15. Check out the complete details: rxdb.info/releases/16.0.…

Just published expo-opfs. If you're building an @expo app and want to use a web library that needs the Origin Private File System (OPFS), this polyfill based on expo-filesystem makes it work out of the box. github.com/pubkey/expo-op…

🚨 AI DOM scraping is dead. 🚨 Meet the new RxDB WebMCP Plugin! Expose your in-app local-first database directly to AI Agents with a single function call. Why WebMCP + RxDB? ✅ Zero Latency & Offline Capable ✅ Privacy-First Data Access ✅ Unlimited Query Capabilities ✅ Native JSONSchema Support Build the next generation of AI-accessible web apps today. Check out the docs: rxdb.info/webmcp.html #RxDB #WebMCP #LocalFirst #AI #WebDev

The browser is your database: The #ThickClient is making a comeback. Here’s how next-generation local databases like PGlite and RxDB are bringing feature-rich #DataStorage to the browser. infoworld.com/article/413364…

Working with @rxdbjs and feeling a blast. Tried @convex, but i'm still a @supabase fan too much to drop it. Looked at @ElectricSQL and @tan_stack db, and it's meaning good, but requires hosting, adding more complexity, plus does feel quite ready. But RxDb is fire.

A hill I’ll run to the top to die on is that FRP really is the right way to do UI (and note to self to return to my little side project to integrate <react-rxjs.org> and <rxdb.info>).

TanStack Start is a new full-stack framework for React that's an alternative to options like Next.js and Remix. And in this tutorial, @andrewbaisden walks you through how to get started with it. You'll use it to build a CRUD app along with TanStackDB and add RxDB integration, too. freecodecamp.org/news/how-to-bu…

Imagine teams at a remote construction site logging equipment data, tracking materials, and recording safety checks; all without worrying about losing connectivity. Learn how @rxdbjs + MongoDB Atlas power truly offline-ready applications: mongodb.social/6015766Yd

If you build with TanStack DB, you can swap out and optimise your state transfer layer without affecting your application code. Migrate from query to sync. Still query when you need to. Integrate external services into a unified client-side data model. Swap out one sync engine for another.

TanStack DB now has a @rxdbjs collection! Thanks to RXDB's creator @pubkeypubkey for building it!

@dannytt @housecor Related PR github.com/TanStack/db/pu…

@dannytt @housecor A RxDB-Tanstack/db plugin is in the making

Spending more time with Tanstack DB this week and it's finally clicking. Lot's of little "ah ha" moments. Here's an example. In typical React, I'd: 1. Fetch data from a REST endpoint 2. Store the data to state so I could change it in form 3. Populate state via a useEffect when the query resolves 4. Cache the query result via Tanstack query by declaring a query key 5. Derive state via separate variables as needed In contrast, Tanstack DB handles all that in a "live query". I can even derive state inline within the query. Note what I didn't need: -No useState -No useEffect -No separate variables for derived state -No query keys -No custom hooks I just query the collection using a type safe query language.

In 2025 sync will be the new way we fetch data. - Electric SQL @ElectricSQL - TanStack DB @tan_stack - Replicache @replicache - RxDB @rxdbjs 🌍 Local-first is coming fast.

Thanks for hosting this! @gala_labs, @buildclub_, @AnnieLiao_2000 @tanmay_jain_ Thanks @cursor_ai for shipping the best IDE and being my main inspiration! Thanks @nextjs, @langchain, @huggingface, @AnthropicAI, @rxdbjs for making this possible to build in a matter of days!

1/5. 🧵 Build Front End Apps That NEVER Go Offline with RxDB 🚀 Struggling with offline capabilities and real-time updates in your apps? Meet RxDB, your reactive, offline-first NoSQL database for modern JS apps.

Offline data synchronization for an app is no longer a luxury, but a necessity. Therefore, we’re happy to announce that Appwrite Databases now features a direct integration with @rxdbjs , a local-first NoSQL database designed for JavaScript apps. Now, it's easier than ever to build real-world apps that stay in sync online and offline. Not sure where to start? We've got you covered. We've built an offline-first journal app with Appwrite and RxDB. Check out the step-by-step guide here: appwrite.io/blog/post/offl…

Meet the brand-new RxDB Appwrite Plugin! This integration allows you to seamlessly replicate local-first data from RxDB's client-side database to @appwrite’s scalable cloud platform for real-time sync and offline functionality. No more complex setups - start building better apps now: rxdb.info/replication-ap…

DB abstraction is useless for 99% of applications like, how many times have you swapped out the DB? how many times have you done it and it’s been smooth, despite the abstraction? oh, you’ve chosen postgres? now you can’t take advantage of it you’re forced to build against the lowest common denominator you’ve hamstrung yourself well done

I've been exploring offline-first paradigm for @youcraftinc and here're a few interesting things I've noticed: - Syncing different entities becomes so similar, you end up writing a generic sync engine (thanks to libraries like @rxdbjs that make this quite easy). - The dev experience feels smoother, almost enjoyable – you build features keeping local database in mind, and syncing feels almost automatic. - It naturally sets you up for nice features like end-to-end encryption or Bring-Your-Own-Cloud.

Ever wondered why we chose @jsonschema over a custom schema language? Did you know that changing your schema validator can impact your insert speed by up to 6 times in memory storage? In our newest case study, “How RxDB Embraces JSON Schema to Build Its NoSQL Database,” we dive into: ✅ The benefits of building on an industry-standard schema language instead of reinventing the wheel. ✅ How RxDB uses JSON Schema for features like encryption, key-compression, and more. ✅ Comprehensive performance benchmarks of different validators (like AJV and z-schema). ✅ Pro tips for integrating TypeScript types directly from your JSON Schema. json-schema.org/blog/posts/rxd…