This reference documentation site is for versions of the MongoDB Java synchronous driver up to 4.3-beta.
See the MongoDB Java Driver documentation site for version 4.3 and later versions of the reference documentation.

Logging

By default, logging is enabled via the popular SLF4J API. Logging is optional: the driver will use SLF4J if the driver detects the presence of SLF4J API (class org.slf4j.Logger) in the classpath. Otherwise, the driver will log a single warning via JUL (java.util.logging) and otherwise logging will be disabled.

The driver uses the following logger names:

org.mongodb.driver: the root logger
- cluster: for logs related to monitoring of the MongoDB servers to which the driver connects
- connection: for logs related to connections and connection pools
- protocol: for logs related to protocol message sent to and received from a MongoDB server
  - insert: for logs related to insert messages and responses
  - update: for logs related to update messages and responses
  - delete: for logs related to delete messages and responses
  - query: for logs related to query messages and responses
  - getmore: for logs related to getmore messages and responses
  - killcursor: for logs related to killcursor messages and responses
  - command: for logs related to command messages and responses
- uri: for logs related to connection string parsing
- management: for logs related to JMX

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