potiuk edited a comment on issue #18849:
URL: https://github.com/apache/airflow/issues/18849#issuecomment-940389126


   > I expected ./breeze to start with sqlite by default but it starts with 
mysql. Am I missing something?
   
   Some of the parameters (like backend) are "saved" from the previous run and 
persisted (so that you can run "last used" configuration with just `./breeze`. 
   
   It is described here 
https://github.com/apache/airflow/blob/main/BREEZE.rst#choosing-different-breeze-environment-configuration
   
   > You can use additional breeze flags to choose your environment. You can 
specify a Python version to use, and backend (the meta-data database). Thanks 
to that, with Breeze, you can recreate the same environments as we have in 
matrix builds in the CI.
   > 
   > For example, you can choose to run Python 3.6 tests with MySQL as backend 
and in the Docker environment as follows:
   > 
   > ./breeze --python 3.6 --backend mysql
   > The choices you make are persisted in the ./.build/ cache directory so 
that next time when you use the breeze script, it could use the values that 
were used previously. This way you do not have to specify them when you run the 
script. You can delete the .build/ directory in case you want to restore the 
default settings.
   > 


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