Is there a «Cracking the Linux System Interview» book? I've been asking this question a lot recently. So, I wrote a series of posts to cover essentials and beyond of shells, process creation, fork, exec, file descriptor, pipe and more. Must read for SREs:.

Got a Linux system interview tomorrow? Refresh your knowledge with this article about essential kernel building blocks

The best “How LLMs like ChatGPT work” explanation with some deep dives, I’ve seen. Credits @karpathy.

Are your Linux services and software ready for IPv6? Do you know how Nginx, Envoy, and HAProxy work with dual-stack IPv4 and IPv6 upstreams and downstreams? What features do Go, Python, Rust, and Java provide, and how do they resolve hostnames? Check out:

Linux computer networking interviews are probably the hardest to prepare for due to the lack of up-to-date practical materials. Books usually provide only basics. In my new posts I tried to address IPv4 and IPv6 dual-stack apps, resolvers and internals

If you want to improve your understanding of Dual-Stack apps on Linux and their internals: stub resolvers, getaddrinfo, c-ares, systemd-resolved – read my new series "What every SRE should know about GNU/Linux resolvers and Dual-Stack applications".

If you struggle to grasp systemd, you're not alone anymore, learn by examples with interactive REPL:

RT @eatonphil: Good time as any to revisit Cassandra's new leaderless consensus protocol, Accord, aimed at replacing Paxos inside of Cassan….

RT @__criu__: Checkpoint and Restore in Kubernetes with CRIU | Talks at DeepSource.

RT @SaveTheRbtz: Less obvious observability tips and tricks: asynchronous structured logging, metrics with exemplars, tracing with TraceQL,….

RT @bibryam: 12 Factor CLI Apps.

RT @vanlightly: Part 4 of my Viewstamped Replication Revisited paper analysis with TLA+.

mmap() is a tremendously important Linux syscall. Many open-source and in-house databases and KV storages use it internally to simplify data access. That's why it's so essential for SREs to understand its interaction with Page Cache:

How much memory does my program use? It is a frequent question on Stackoverflow. Peeps usually try to use top, atop, ps. These tools give mixed, confusing info. Instead read my blog post where I show modern Linux memory tools(cgroups, page-types, procfs):

Terminals and Pseudoterminals: internals, options, interaction with ssh, and mandatory knowledge for SREs that we all always forget, in my new blog post:.

What every SRE should know about file descriptors, pipes, terminals, user sessions, process groups and daemons: My new series of posts!

A must-read book for everyone involved in software development. No matter if you’re a software developer, SRE, DevOps or manager, you should read EACH chapter of this book.

Incredible blogpost about building a NoSQL database with steps deep examples and clear explanation

RT @newsycombinator: Introduction to Algorithms (2020)

RT @newsycombinator: Difftastic, the Fantastic Diff: How it works