sqlite - 如何从多个线程通过 rusqlite 使用 SQLite？

Question

有很多文章解释了 SQLite 的多线程访问问题，但我找不到任何简单的解决方案。如何从例如访问 SQLite多个线程同时工作的 Web 服务器？

来源(仍然没有解释任何简单的解决方法):

• SQLite documentation on its modes
• Issue in GitHub to share the connection
• Reddit post that talks about the same problem

Answer 1

您可以使用 r2d2-sqlite 连接池 + std::sync::Arc 对 SQLite 进行多线程访问。示例:

[dependencies]
r2d2_sqlite = "0.16.0"
r2d2 = "0.8.8"

在 Rust 中:

fn main() {
    let sqlite_file = "my.db";
    let sqlite_connection_manager = SqliteConnectionManager::file(sqlite_file);
    let sqlite_pool = r2d2::Pool::new(sqlite_connection_manager)
        .expect("Failed to create r2d2 SQLite connection pool");
    let pool_arc = Arc::new(sqlite_pool);

    let pool = pool_arc.clone();
    whatever.method(move || {
        let connection = pool.get();
        // ...
    });

    let pool = pool_arc.clone();
    whatever.method(move || {
        let connection = pool.get();
        // ...
    });
}