The Key-Value Store
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A key-value store is a simple database built on an associative array — storing only key-value pairs, retrieving the value for a known key, and fitting simple schemas best.
Show
A fare-card number pulling up its balance is the shape in daily service.
Watch for
The map abstract data type from video 0099, industrialized.