Show HN: Geo-Distributed KV Store for Metadata Management (datenlord.github.io)

17 points by SandmanDZ 2y ago ↗ HN

Community Meeting In order to provide a more comprehensive overview of Xline's progress and to promote the Xline community, we will be hosting an Xline community meeting on January 26, 2024 at 6:00 PM PST

The meeting will be held via zoom: Meeting number: 874 4309 5241 Password: 124294 Link：https://zoom.us/j/87443095241?pwd=r3uJhJ9cb0caovHRsi1ay2pFuh...

2 comments

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nvartolomei 2y ago ↗

> Existing distributed KV stores mostly adopt the Raft consensus protocol, which takes two RTTs to complete a request.

Why 2? Isn’t a single AppendEntries request from the leader enough?

nvartolomei 2y ago ↗

This sentence is explained on their homepage:

> it takes 2 RTTs to complete a consensus request from the view of a client. One RTT takes place between the client and the leader server, and the leader server takes another RTT to broadcast the message to the follower servers