# ucarGroup/DataLink

DataLink是一个满足各种异构数据源之间的实时增量同步、离线全量同步，分布式、可扩展的数据交换平台。

Repository: https://github.com/ucarGroup/DataLink
Canonical: https://ross.abutalabs.com/products/datalink
Language: Java
License: Apache-2.0
License Family: permissive
Topics: data-replication, datalink, data-exchange, realtime-replication, full-replication
Last push: 2022-12-06T00:35:57+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2904, "days_push": 1367, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1120, forks 412 (observed 2026-08-28T04:03:39.762173+00:00)

## What it is
DataLink is a distributed, extensible data exchange platform for real-time incremental and offline full synchronization between heterogeneous data sources. It uses a Manager-Worker architecture with Zookeeper coordination and was battle-tested at Ucar Group and Luckin Coffee syncing TBs of data daily.

## Use cases
- sync data between heterogeneous databases in real time
- replicate mysql binlog changes to other datastores
- run one-off full table migrations between databases
- manage thousands of sync mappings across hundreds of db instances from a web console
- build a self-hosted alternative to canal, otter, or kafka connect for data sync

## When to choose
- you need both real-time incremental and batch full sync in one platform
- you want a web-managed, HA cluster with dynamic load balancing for sync tasks
- you operate at large scale (hundreds of instances, thousands of mappings) and need plugin extensibility

## When to avoid
- you need a lightweight single-node sync tool or simple cron-based ETL
- you primarily target cloud-managed CDC services or non-Java ecosystems
- you need actively maintained software with recent releases and large community

## Facets
- artifact type: application
- maturity: maintenance
- function: etl, streaming, database, monitoring, alerting
- domain: databases, big-data, self-hosted
- platform: jvm, self-hosted
- tags: data-replication, data-exchange, cdc, realtime-sync, full-sync, mysql, zookeeper, distributed, data-engineering, linux, docker

## Member repositories
- ucarGroup/DataLink (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:39.762173+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:41:07.804024+00:00, confidence not recorded.
  - readme: https://github.com/ucarGroup/DataLink (fetched 2026-08-28T04:03:39.762173+00:00, sha da7ce077bf05)
- Data as of 2026-08-30T08:39:29.467469+00:00.