Скачать или смотреть How Data is Organized The Page

How does a database find your data in milliseconds, and what happens when a single record is too big to fit on a page?

The secret isn’t just in the algorithm, it’s in the physical layout of the bytes on your disk. 📂In this episode of "algorush", we are cracking open the B-Tree node to see exactly how it's structured. We move beyond abstract theory to look at the actual Page Organization and Layout used by production-grade storage engines.We’re breaking down the anatomy of a database page, including:

The Page Header: Why every page starts with "magic numbers" for validation and how sibling links allow the database to "walk" sideways through your indexes without constantly jumping back to the parent nodes.

Advanced Pointer Management: A look at how rightmost pointers handle the "leftover" child nodes and how node high keys (a staple of B^link-Trees) define the strict boundaries of a subtree for faster, safer lookups.

Handling the "Spillover": What happens when a variable-size record is larger than the page itself? We explore Overflow Pages and how databases use linked extension pages to handle massive data without breaking the fixed-size page model.

If you’ve ever wanted to understand the "physical" side of data structures, this deep dive into storage internals is for you.

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