Why do we need KV caching?
A visual explanation of why LLM inference caches key and value vectors, and why the trick saves compute during token-by-token generation.
9 min read
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nguyen le
@yasuonguyen01
build · break · understand
about
- I'm interested in LLM inference. So basically I will try to learn everything around it, quantization, kernel engineering, etc.
- Beside LLM inference, I'm also interested in mathematics and some theoretical computer science stuffs such as complexity theory or programming language theory.
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I also love to spend time with
my family 
my friends
work
VinMotion
Robotics Engineer
December 2025 – June 2026
VinBigdata
AI Engineer Trainee
Made some good friends along the way.
July 2025 – December 2025
education
VNUHCM - University of Science
Bachelor of Science in Artificial Intelligence
Best investment in myself I ever made
Oct 2021 – Oct 2025
