The ORM dry run can be enabled through the DryRun configuration option, and it is disabled by default. When the ORM dry run feature is enabled, read operations will be committed, while write, update, and delete operations will be ignored. This feature is often used in conjunction with debug mode and log output to verify whether the SQL executed by the current program (especially scripts) meets expectations. Below is a configuration example with the dry run feature enabled:

database:
  default:
  - link:   "mysql:root:12345678@tcp(127.0.0.1:3306)/user"
    debug:  true
    dryRun: true

The dry run feature can also be globally modified via command-line parameters or environment variables:

1. Command-line startup parameter - gf.gdb.dryrun=true.
2. Specific environment variable - GF_GDB_DRYRUN=true.

For example:

$ ./app --gf.gdb.dryrun=true

$ ./app --gf.gdb.dryrun true