sqlite VS sqlite

> I would've probably picked the modernc variation

Heads up about the modernc library, it has been stuck on an old version of sqlite for several months [1]. It seems like maintainer time is the limiting factor [2]. There has been a call to arms on that issue page, the maintainer is looking for help, but it looks like not much has arrived. It seems like it might trace back to blockers in the C-to-Go compiler.

It's a major undertaking and a very impressive piece of work, but I'm not surprised it's a struggle when big roadblocks get hit. I hope they find a way to progress, but I'm very relieved to be seeing some CGo-free alternatives like ncruces/go-sqlite3 emerging. I'm going to give it a try for sure and see if I can live with the compromises.

Squinn-go looks very compelling too, but I don't like that it requires the squinn binary to already be installed on a user's machine, I think that gives with one hand and takes with the other: sure, I get to avoid CGo, but I also lose the turnkey, single-command install, static build benefits Go brings out of the box.

Seconding the point about nitty gritty, I'd read it for sure too!

  [1]: https://gitlab.com/cznic/sqlite/-/issues/154

No, but that has the disadvantage of being C compiled into Go, then being compiled into native executable.

I'm actually surprised by how readable this came out; props to the Go->C compiler author. But you can guess that pushing this sort of thing through the Go compiler is going to cause some slowdowns due to sheer paradigm mismatch: https://gitlab.com/cznic/sqlite/-/blob/master/lib/sqlite_lin...

FWIW, we use a version of SQLite transpiled into Go to avoid CGI problems: https://gitlab.com/cznic/sqlite

It could be clearer in the readme, but note that this is a machine translation from C to Go, repeated for every OS-Arch pair. Example of the one you're most likely to use in production: https://gitlab.com/cznic/sqlite/-/blob/master/lib/sqlite_linux_amd64.go

Like this? https://gitlab.com/cznic/sqlite

> You can get substantially better performance out of sqlite by using the lower level https://github.com/crawshaw/sqlite, turning on WAL etc, using a connection per goroutine for reads, and sending batches of writes over a buffered channel / queue to a dedicated writer thread. That way you can turn off SQLite’s built in per-connection mutex but still be thread safe since each connection is only used on a single thread at a time.

Would this protect against a row update in the middle of a read? e.g. would a row at least be internally consistent at the time it was read?

The default go sqlite driver is https://github.com/mattn/go-sqlite3, which is quite lovely, but I ran into issues with concurrency on read only databases.

I'm now using https://github.com/crawshaw/sqlite and it seems to address those issues (but I haven't gotten around to setting up a proper test to confirm). It may be worth perusing if you do run into performance problems. It does come with the caveat of not being a database/sql driver though.

crawshaw/sqlite - Low-level Go interface to SQLite

crawshaw/sqlite actually uses CGo -- it's a wrapper around the C version of SQLite. For example, see https://github.com/crawshaw/sqlite/blob/23d646f8ac00d9dd2390...

zombiezen/go-sqlite uses cznic's pure Go converted version of SQLite, so avoids CGo. It's explicitly stated to be "a fork of crawshaw.io/sqlite that uses modernc.org/sqlite, a CGo-free SQLite package. It aims to be a mostly drop-in replacement for crawshaw.io/sqlite."

The second well known driver is https://github.com/crawshaw/sqlite