Fixed-block chunking and content addressing

The core idea

Fixed-block chunking and content addressing is lesson 25.02 in the module "File sync". These notes are a placeholder: replace this file with your own writing and the page will render it with the course styling.

The shape that works well for a lesson is short. Open with the one idea a reader should leave with, show where it bites in a real system, name the tradeoff, and finish with the default this course recommends.