How does wandb stream logs and writes to disk?

W&B queues events in memory and writes them to disk asynchronously to manage failures and support the WANDB_MODE=offline configuration, allowing synchronization after logging.

In the terminal, observe the path to the local run directory. This directory includes a .wandb file, which serves as the datastore. For image logging, W&B stores images in the media/images subdirectory before uploading them to cloud storage.