Question 1

Is Rusqlite thread-safe for concurrent database access?

Accepted Answer

Rusqlite's Connection is not thread-safe by default; you need to use synchronization like Mutex or connection pooling. SQLite itself supports limited concurrency, so Rusqlite inherits those constraints, making it less ideal for high-write scenarios.

Question 2

How to encrypt a database with Rusqlite?

Accepted Answer

Enable the 'sqlcipher' or 'bundled-sqlcipher' feature to link against SQLCipher, providing encryption. You'll need to set the encryption key when opening the database, and optionally use vendored OpenSSL for crypto dependencies.

Question 3

Rusqlite vs Diesel for SQLite in Rust: which is better?

Accepted Answer

Rusqlite offers a lower-level, safe API close to SQLite, ideal for direct control and simplicity. Diesel is a full ORM with query building and migrations; choose Rusqlite for embedded use and Diesel for complex relational mappings.

Question 4

How to handle database migrations with Rusqlite?

Accepted Answer

Rusqlite doesn't include a migration framework; you need to manage schema changes manually via SQL scripts or use a separate crate like 'refinery' with custom integration, adding extra setup.

Question 5

Can I use Rusqlite in async Rust applications?

Accepted Answer

Rusqlite is synchronous; for async, you must run database operations in a blocking thread or use spawn_blocking with an async runtime. Consider 'sqlx' if native async support is critical.

Question 6

What's the performance impact of using bundled SQLite?

Accepted Answer

Bundled SQLite is compiled from source, so performance is similar to system SQLite but may have slight overhead from static linking. It avoids dynamic library loading issues, which can improve portability.

rusqlite

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