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It's not a buzz term. It's really fully async disk I/O. Dqlite does not use SQLite's stock vfs implementation for writing to disk, as it's an entirely different model (based on raf…

Everything you said is very accurate (dqlite author here).

Give us time, we'll get there :)

Depends on how fast is your disk, what file system and kernel you use, and how low is your network latency. Difficult to predict. But it's basically as fast as it can get given 1) …

Not that I know, but it's on my todo list (dqlite author here).

The support of async disk I/O in Linux differs depending on kernel version and file system type. But it is possible to get 100% async I/O with the is_submit(), and dqlite will leve…

https://github.com/canonical/dqlite/blob/master/doc/faq.md#w...

It has been around for 2 years and half, but we released v1.0.0 just yesterday. I added answers to your other questions to the FAQ: https://github.com/canonical/dqlite/blob/master/…

Oh I had no idea somebody was using it in the wild! It has been unstable until now, we just released v1.0.0 yesterday. So no more public API breakage from now on.

Yes, dqlite is currently used for clustering support in LXD 3.0: https://github.com/lxc/lxd

If you read the raft paper, or just watch presentations of it, you'll see that all the issues you mentioned are covered: - faulty node replacement: you can take any node off (or an…

"slower" means this: when you perform a SQLite write, SQLite writes a new page on disk to the its write-ahead log. dqlite needs to replicate that page write across all nodes. A pag…

Unit and fuzzy-based test coverage that includes all possible edge cases is being put in place. I'd like to write a Jepsen test suite too. Hardware does not matter that much, since…

If you require SQL, sharding and concurrent writes, yes do use CockroachDB or other equivalent solution. If you don't have those requirements, dqlite or rqlite might get the job do…

I'm working towards a 1.0 release. At that point documentation will be more complete and the plumbing needed to use it in an app should be also reduced. I think the best explanatio…

BedrockDB requires to operate a separate process, whereas you can embed dqlite in your Go application (pretty much in the SQLite philosophy). Also, afaik BedrockDB patches upstream…

If your application is: 1) Distributed (e.g. n equal processes running on n machines) 2) Needs some shared state across nodes 3) Would like that state to have SQL semantics (relati…

I implemented dqlite in Go for convenience (a production-ready raft library was available, github.com/hashicorp/raft). It'd be interesting to implement something similar in C or ev…

Hello, author of dqlite here. Things are still in flux, but yes, I plan to publish benchmarks before making a 1.0 release, as well as improving documentations and introduce some mo…