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deepmind.google·6d ago
AI Engineering
Lobsters·Jun 21·5 min read
Optimizing #[sqlx::test] rebuild time
TL;DR
Slow compilation times for #[sqlx::test] tests can hinder productivity for developers. Profiling revealed that incremental rebuild times were around 8-10 seconds due to various factors.
✦ Why It Matters
Engineers can improve their workflow by optimizing test configurations to reduce rebuild times.
Key Takeaways
- Profile your build process to identify slow components.
- Minimize dependencies in your test configurations.
- Optimize test setups to reduce rebuild times.
- Invest time in improving build efficiency for better productivity.
Full Summary
Incremental rebuild times for #[sqlx::test] tests in Rust projects can be frustratingly long, averaging 8-10 seconds after each code change. This issue was identified while working on the bors merge queue bot, which integrates tests to ensure smooth operation.
Profiling the build process revealed that multiple factors contributed to the slow rebuild times, including dependencies and test configurations. By addressing these factors, developers can streamline their testing process, leading to faster feedback loops.
The findings suggest that optimizing test configurations and minimizing unnecessary dependencies can lead to substantial improvements. For engineers, this means that investing time in profiling and optimizing build processes can yield significant productivity gains.