Database -

This is the hottest trend. Large Language Models (LLMs like GPT) have short memories. A vector database stores text as "vectors" (mathematical representations of meaning).

A database without an index is like a book without a table of contents. When you run SELECT * FROM users WHERE email = 'alice@example.com', without an index, the database performs a sequential scan—reading every single row. With a B-tree index on the email column, it reduces a 10-million-row search from seconds to milliseconds. database

However, indexes aren't free. They consume disk space and slow down INSERT, UPDATE, and DELETE operations because the index must be updated alongside the data. The art of database tuning is finding the optimal set of indexes. This is the hottest trend

This was the Cambrian Explosion of data. Edgar F. Codd, an IBM researcher, proposed the Relational Database. A database without an index is like a