How do B-Tree Indexes work? | Systems Design Interview: 0 to 1 with Google Software Engineer

You throw your data in B-Trees, I throw my data in B-holes, we are not the same.

Sorry about the poor explanation of node splitting on writes, here's an extra reference video if you need it:
B-Tree Tutorial - An Introduction to ....

Again, please don't comment that the size of the B-tree page is in kilobytes, I get it now.