Top 3 Elixir CRDT Projects

realtime

54 6,460 9.0 Elixir

Broadcast, Presence, and Postgres Changes via WebSockets

Project mention: A Technical Dive into PostgreSQL's replication mechanisms | news.ycombinator.com | 2024-01-11

You can LISTEN/NOTIFY. Or you can use logical replication and a custom subscriber.[1] Supabase uses the latter.[2]
[1]: https://www.postgresql.org/docs/current/logical-replication....
[2]: https://github.com/supabase/realtime

electric

27 4,784 9.8 Elixir

Local-first sync layer for web and mobile apps. Build reactive, realtime, local-first apps directly on Postgres.

Project mention: Ask HN: How Can I Make My Front End React to Database Changes in Real-Time? | news.ycombinator.com | 2024-04-17

I'm interested in this problem also!
I think there is a large overlap with projects that market/focus on offline-first experiences.
AFAIK this problem can be solved by:
1) Considering a client-side copy of the database that gets synced with the remote DB. This is an approach [PowerSync](https://www.powersync.com/) and [ElectricSql](https://electric-sql.com/) and [rxdb](https://rxdb.info/) take!

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
delta_crdt_ex

1 474 1.2 Elixir

Use DeltaCrdt to build distributed applications in Elixir

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).