"MongoDB" write the level parameter that concerns Writeconcern

1. None: No exception thrown

2. NORMAL: Throws only network exceptions, no server exceptions

3. SAFE: Throws network exceptions and server exceptions, and waits for the server to complete a write operation

4. MAJORITY: Throws a network exception and server exception and waits for the master server to complete the write operation

5. Fsync_safe: Throwing network exceptions and server exceptions, write operations waiting for the server to flush data to disk

6. Journal_safe: Throwing network exceptions and server exceptions, write operations waiting for the server to submit log files to disk

7. Replicas_safe: Throws network exceptions and server exceptions, and waits for at least 2 servers to complete the write operation

This article is from the architect's path blog, so be sure to keep this source http://lizhuquan0769.blog.51cto.com/2591147/1762823

"MongoDB" write the level parameter that concerns Writeconcern