Tech & Systems Knowledge Base
Curated technical explainers, architecture notes, educator channels, and developer tools classified under Tech & Systems.
JDK 26 Is Out. Here's Why "Gamechanger" Is the Wrong Word — and What's Actually True Instead
I updated the Java version in a side project's Dockerfile the same week JDK 26 went GA, mostly out of habit. A realistic breakdown of JDK 26's 10 JEPs — final features like HTTP/3 and GC-neutral AOT caching, preview features like Structured Concurrency (6th preview) and primitive patterns, and why non-LTS releases matter for feature iteration rather than immediate production deployments.
Git Under the Hood: How Git Actually Stores Your Data Inside `.git/objects`
I used to be the person who ran `git rebase -i`, panicked at the list of commits, and closed my laptop. What actually fixed this wasn't memorizing commands—it was spending an afternoon inside `.git` with `cat-file` to realize Git is just an elegant key-value object store.
Under the Hood of JavaScript: How V8, Ignition, and TurboFan Actually Execute Your Code
I spent a stretch of my second year believing JavaScript was slow by design. From Lars Bak's V8 engine and streaming parsers to Ignition bytecode, TurboFan JIT deoptimizations, hidden class Maps, inline caching, and Orinoco GC — a deep look at how V8 actually executes your code.
How HTTPS and TLS 1.3 Actually Work Under the Hood
I used to think of the padlock icon in the address bar as a binary 'safe or not safe' signal. Watching a real handshake packet by packet with openssl s_client reveals the elegant applied cryptography behind HTTPS, ECDHE key exchange, X.509 certificate chains, and TLS 1.3's single round trip.
Fireship
@Fireship3.2M SUBSCRIBERS"The gold standard for ultra-fast, high-density 100-second architectural breakdowns and tech news."
The Primeagen
@ThePrimeagen680K SUBSCRIBERS"High-energy, uncompromising focus on vim workflow, performance engineering, and real-world backend tradeoffs."
r/linux
— LINUX & TECHThe primary bulletin for Linux news, distro updates, kernel release announcements, and desktop ecosystem discussions.
r/selfhosted
— TECH & INFRASTRUCTUREA hub dedicated to hosting network services, media servers, password managers, and home automation locally.