codeblocks.studio

Articles

The ideas behind the problems — filed by category, not a chronological feed.

Data Structures

1 article

Red-Black Tree
Why an unbalanced BST degrades to a linked list, the four invariants a red-black tree maintains instead, and what the insert fix-up actually does.

Databases

1 article

Indexing and B-Trees
Why a database's default index is a B-tree and not a binary search tree or a hash table, and the handful of query shapes that quietly can't use one at all.

System Design

2 articles