This is [char.blog](https://char.blog), a collection of technical notes, implementation writeups, and references. Some are polished. Most are in progress. I work as a Technical Consultant and Senior Engineer at a Managed Service Provider, mostly across cloud infrastructure, networking, cybersecurity, automation, and production support. Outside of work, I enjoy cycling and spend most of my time researching, programming, or listening to music (mostly jazz and classical). If you have a question related to a network I manage or control, please send an email to the address listed on the respective WHOIS contact. If it is a P1 issue or security vulnerability, please include “P1” or “Security” in the subject line. ## Recent activity <div class="activity-list"> <div class="activity-day">2026-09-07</div> <div class="activity-row"> <span class="activity-type paper">■</span> <span class="activity-source">arxiv.org · 2017</span> <span class="activity-title"><a href="https://arxiv.org/abs/1706.03762" target="_blank" rel="noopener">Attention Is All You Need</a></span> <span class="activity-topic">ai · transformers</span> </div> </div> <a class="index-link" href="/resources">See all activity →</a>