nowfound

Dev tools · August 6, 2019

Realtime Replication Between GraphQL and the Client-Side Database

Set up GraphQL-based replication with RxDB including pull, push, and live streaming handlers for syncing data between client and server.

Realtime Replication Between GraphQL and the Client-Side Database launched on August 6, 2019 with 17 votes, #810 of 3,185 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 7 years on.

Visit rxdb.info ↗Alternativestop 25% of August 2019

In plain words

RxDB is a developer tool that synchronizes data between GraphQL servers and client-side databases in real time. It enables developers to build applications where local data stays automatically updated with server changes and vice versa. The tool is designed for teams building reactive applications that require instant data consistency across server and client environments without manual synchronization code.

written from the facts on this page · September 2026

From the sources

The GraphQL replication provides handlers for GraphQL to run replication with GraphQL as the transport layer. The GraphQL replication is mostly used when you already have a backend that exposes a GraphQL API that can be adjusted to serve as a replication endpoint. If you do not already have a GraphQL endpoint, using the HTTP replication is an easier solution. Before you use the GraphQL replication, make sure you've learned how the RxDB replication works. At the server-side, there must exist an endpoint which returns newer rows when the last checkpoint is used as input. For example lets say you create a Query pullHuman which returns a list of document writes that happened after the given…from rxdb.info

Does a similar job

all alternatives →
  • Rxdb – A fast, reactive, client-side database2017 · github.com · ▲52

    The local-first database that runs on every JS runtime and replicates with your existing backend - no vendor, no lock-in - https://rxdb.info/ - pubkey/rxdb

  • GraphQL lib for real-time apps2018 · github.com · ▲68

    A flexible GraphQL client and server library that can be used to power realtime applications. - tjmehta/primus-graphql

  • ElectricSQL, Postgres to SQLite active-active sync for local-first apps2023 · electric-sql.com · ▲617

    Hi HN, James, Valter, Sam and the team from ElectricSQL here. We're really excited to be sharing ElectricSQL with you today. It's an open source, local-first sync layer that can be used to build reactive, realtime, offline-capable apps directly on Postgres with two way active-active sync to SQLite (including with WASM in the browser). Electric comprises a sync layer (built with Elixir) placed in front of your Postgres database and a type safe client that allows you to bidirectionally sync data from your Postgres to local SQLite databases. This sync is CRDT-based, resilient to conflicting…

  • MD
    Multiplayer Demo Built with Elixir2022 · multiplayer.dev · ▲221

    Hey HN, I’m an engineer at Supabase [0] and one of the creators of this demo. My team and I have been working hard to bring developers the next version of Supabase Realtime. The current version of Realtime [1] is a Change Data Capture (CDC) server for a PostgreSQL database that broadcasts changes via WebSockets to authorized subscribers. It’s written in Elixir/Phoenix. The server utilizes PostgreSQL’s logical replication functionality, which writes database changes to Write-Ahead Logging (WAL) segment files, and a replication slot, responsible for managing and retaining WAL files.…

  • DA
    DriftDB – an open source WebSocket backend for real-time apps2023 · driftdb.com · ▲367

    Hey HN! I’ve written a bunch of WebSocket servers over the years to do simple things like state synchronization, WebRTC signaling, and notifying a client when a backend job was run. I realized that if I had a simple way to create a private, temporary, mini-redis that the client could talk to directly, it would save a lot of time. So we created DriftDB. In addition to the open source server that you can run yourself, we also provide https://jamsocket.live where you can use an instance we host on Cloudflare’s edge (~13ms round trip latency from my home in NY). You may have seen my…

  • PS
    Peerdb Streams – Simple, native Postgres change data capture2024 · ▲177

    Hello HN, I am Sai Srirampur, one of the Co-founders of PeerDB. (https://github.com/PeerDB-io/peerdb). We spent the past 7 months building a solid experience to replicate data from Postgres to data warehouses. Now we're expanding to queues. PeerDB Streams provides a simple and native way to replicate changes as they happen in Postgres to Queues (Kafka, Redpanda, Google PubSub, etc). We use Postgres logical decoding to enable Change Data Capture (CDC). Blog post here: https://blog.peerdb.io/peerdb-streams-simple-native-postgres.... 10-min quickstart here:…

More dev tools this month

the category →
  • /dev/null▲472

    a social network for devs

    Dev tools · 2d ago · dev-null.sh

  • open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

    Dev tools · 27d ago · github.com

  • Contribute to reladraw/reladraw development by creating an account on GitHub.

    Dev tools · 25d ago · github.com

  • OpenBot▲362

    Grok Bot alternative: free, local, open-source, multiplayer

    Dev tools · 22d ago · openbot.run

  • Talanoa▲340

    Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

    Dev tools · 20d ago · talanoa.email

  • CoreSpeed▲332

    One MCP for everything your agents need: apps, memory, tools

    Dev tools · 27d ago · corespeed.io

Source: Show HN post ↗

Launched alongside, August 2019

the whole month →
  • View 100s of startup pitch decks or submit your own.

    Growth · 2019 · startupdecks.co

  • Dashblock▲696

    Turn any website into an API

    Dev tools · 2019

  • ⬛️ CLI tool and library for saving complete web pages as a single HTML file - Y2Z/monolith

    Dev tools · 2019 · github.com

  • Get waves▲602

    A simple web app to generate svg waves, unique every time

    Dev tools · 2019 · getwaves.io

  • The easiest way to scrape the internet.

    Dev tools · 2019

  • A gallery of real world marketing examples

    Growth · 2019 · marketingexamples.com