Question 1

How do I serialize a Rust struct to BSON using serde?

Accepted Answer

Use the bson::to_bson function with a struct that derives Serialize, as shown in the README example. This automatically converts the struct to BSON, leveraging Serde integration for type safety.

Question 2

bson-rust vs serde_json: which should I use for MongoDB?

Accepted Answer

Use bson-rust for MongoDB interactions because it natively supports BSON's binary format and types. serde_json is better for plain JSON without MongoDB, as BSON includes extensions like datetime and binary data.

Question 3

How to handle datetime in bson-rust with chrono?

Accepted Answer

Enable the chrono-0_4 feature flag and use the FromChrono04DateTime serde helper, which allows chrono::DateTime values to serialize as BSON datetimes, as documented in the 'Working with datetimes' section.

Question 4

Does bson-rust support WebAssembly?

Accepted Answer

Yes, it compiles to wasm32-unknown-unknown targets and uses js-sys for ObjectId generation in browsers, making it suitable for WASM applications that need BSON support.

Question 5

What are the performance implications of enabling error paths?

Accepted Answer

Enabling the serde_path_to_error feature adds CPU and memory overhead during (de)serialization, as noted in the README. It's useful for debugging but should be used cautiously in performance-sensitive environments.

Question 6

Can I use bson-rust without MongoDB?

Accepted Answer

Yes, it can be used for any BSON-based data interchange, such as storing binary data or integrating with other systems that use BSON, though it's optimized for MongoDB workflows.

bson-rust

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