MongoDB 3.4版本驱动与3.6版本服务器的兼容性问询

Hey there, solid question—let's get straight to the point:

First off: Yes, the MongoDB 3.4 driver is fully compatible with a 3.6 server instance. MongoDB's driver ecosystem is built with backward compatibility as a core principle, so your existing 3.4-driven apps should work smoothly against a 3.6 server without immediate breaking changes.

Key Details to Keep in Mind #

• Core Functionality Works Seamlessly: All standard operations like CRUD, index management, basic aggregation, and connection handling will behave exactly as they did with your 3.4 server. The 3.4 driver understands the wire protocol used by 3.6 servers (since 3.6 didn't introduce a breaking protocol change from 3.4).
• New 3.6 Features Are Unavailable: Any features introduced in MongoDB 3.6 won't be accessible via a 3.4 driver. This includes things like:
  • Change Streams (for real-time data change tracking)
  • Multi-document transactions (for replica sets)
  • Extended $expr operator capabilities
  • Refined findOneAndUpdate upsert behavior
    If your app doesn't rely on these new features, you're good to go for now.
• Long-Term Recommendation: While compatibility holds, it's a good idea to plan a driver upgrade to 3.6 (or later) alongside your server updates. Matching driver and server versions ensures you can leverage all new features, benefit from performance optimizations, and avoid any edge-case compatibility quirks that might pop up over time.

内容的提问来源于stack exchange，提问作者Selim Ok