Top 3 C++ Replication Projects

Ceph

34 13,197 10.0 C++

Ceph is a distributed object, block, and file storage platform

Project mention: First time user sturggles | /r/ceph | 2023-06-24

curl --silent --remote-name --location https://github.com/ceph/ceph/raw/octopus/src/cephadm/cephadmchmod a+x cephadm./cephadm bootstrap --mon-ip 192.168.1.41

lizardfs

4 944 3.3 C++

LizardFS is an Open Source Distributed File System licensed under GPLv3.
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.
NuRaft

1 939 7.4 C++

C++ implementation of Raft core logic as a replication library

Project mention: ClickHouse Keeper: A ZooKeeper alternative written in C++ | news.ycombinator.com | 2023-09-27

That's true - C++ libraries are typically bug-ridden and require exhaustive efforts to clean up.
But the latest bugs found by ClickHouse continuous integration system in the related library were fixed about a year ago:
https://github.com/eBay/NuRaft/pull/373

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). The latest post mention was on 2023-09-27.