alt Hacker NewsIMHO breaking free of SQLite's proprietary test suite is a bigger driver than C vs Rust. Turso's Limbo announcement says exactly that: they couldn't confidently make large architectural changes without access to the tests. The rewrite lets them build Deterministic Simulation Testing from scratch, which they argue can exceed SQLite's reliability by simulating unlikely scenarios and reproducing failures deterministically.
Replies
> IMHO breaking free of SQLite's proprietary test suite is a bigger driver than C vs Rust.
I don't understand this claim, given the breadth and depth of SQLite's public domain TCL Tests. Can someone explain to me how this isn't pure FUD?
"There are 51445 distinct test cases, but many of the test cases are parameterized and run multiple times (with different parameters) so that on a full test run millions of separate tests are performed." - https://sqlite.org/testing.html
Having seen way too many "we're going to rewrite $xyz but make it BETTERER!!", I don't give this one much chance of success. SQLite is a high-quality product with a quarter-century of development history and huge amounts of effort, both by the devs and via public use, of testing. So this let's-reinvent-it-in-Rust effort will have to beat an already very good product that's had a staggering amount of development effort and testing put into it which, if the devs do manage to get through it all, will end up being about the same as the existing thing but written in a language that most of the SQLite targets don't work with. I just can't see this going anywhere outside of hardcore Rust devotees who want to use a Rust SQLite even thought it still hasn't got past the fixer-upper stage.