sysrexThis is mostly about the things that I am learning and don't want to forget just yet!Zola2025-09-10T00:00:00+00:00https://sysrex.com/atom.xmlI Built a Toy Mempool to Find Out If Any of the Rust Actually Stuck2025-09-10T00:00:00+00:002025-09-10T00:00:00+00:00https://sysrex.com/posts/toy-mempool-rust-lessons/Four articles ago I couldn't get a config struct past the borrow checker. Since then I've written ab…Rust Vectors into Iterators2025-09-01T00:00:00+00:002025-09-01T00:00:00+00:00https://sysrex.com/posts/vectors-into-iterators/Converting a Rust Vector into an IteratorHow to deploy zola on github pages2025-08-29T00:00:00+00:002025-08-29T00:00:00+00:00https://sysrex.com/posts/deploy-zola/Intro🔗
This blog is built with Zola (written in Rust), and since it just builds a static page withou…Variables in Rust2025-08-28T00:00:00+00:002025-08-28T00:00:00+00:00https://sysrex.com/posts/variables-in-rust/Variable bindings🔗
The let keywordđź”—
let introduces a variable binding:
let x; // declare "x&quo…What LLM Evals Actually Are (and Why 'Looks Good to Me' Isn't a Strategy)2025-07-22T00:00:00+00:002025-07-22T00:00:00+00:00https://sysrex.com/posts/what-are-llm-evals/A lot of teams building on top of LLMs ship a prompt, look at a handful of
outputs, decide it "seems…The RED Method: A Simple Starting Point for Monitoring Services2025-06-18T00:00:00+00:002025-06-18T00:00:00+00:00https://sysrex.com/posts/red-method-monitoring/Once you've got Node Exporter
reporting host-level metrics, the next question is usually: what shoul…Why Ethereum Execution Clients Are Being Rewritten in Rust2025-05-10T00:00:00+00:002025-05-10T00:00:00+00:00https://sysrex.com/posts/ethereum-execution-clients-rust/If you've spent any time around L2 rollups — including the op-stack setup
covered in an earlier post…Create your own L2 rollup testnet with the OP Stack2025-04-29T00:00:00+00:002025-04-29T00:00:00+00:00https://sysrex.com/posts/create-your-won-rollup-opstack/1. Introduction🔗
Within the rapidly expanding Ethereum ecosystem, Layer 2 rollups have emerged as th…LLM Quantization, Explained in Plain English2025-03-12T00:00:00+00:002025-03-12T00:00:00+00:00https://sysrex.com/posts/llm-quantization-explained/If you've tried running a large language model on your own hardware, you've
probably run into the sa…Retries, Backoff, and Jitter: Why Naive Retry Logic Makes Outages Worse2025-01-20T00:00:00+00:002025-01-20T00:00:00+00:00https://sysrex.com/posts/retries-backoff-jitter/"Just retry the request" is one of the most reasonable-sounding pieces of
advice in distributed syst…PostgreSQL VACUUM and Autovacuum, Explained2024-11-05T00:00:00+00:002024-11-05T00:00:00+00:00https://sysrex.com/posts/postgresql-vacuum-explained/If you've run PostgreSQL in production long enough, you've eventually
looked at pg_stat_user_tables,…Goroutines Spoiled Me, and Rust Un-Spoiled Me2022-05-09T00:00:00+00:002022-05-09T00:00:00+00:00https://sysrex.com/posts/rust-concurrency-goroutines/Concurrency is the actual reason I picked up Rust. Go already sold me on the idea that concurrency s…Go Has One Enum-Shaped Hole and Rust Fills It Three Times Over2022-04-11T00:00:00+00:002022-04-11T00:00:00+00:00https://sysrex.com/posts/rust-structs-enums-traits/Go doesn't have enums. It has iota and a gentleman's agreement that you won't pass it a number that …`if err != nil` vs `Result<T, E>`: A Love Letter and a Breakup2022-03-14T00:00:00+00:002022-03-14T00:00:00+00:00https://sysrex.com/posts/rust-error-handling-result-option/If there's one place I expected Rust to feel familiar, it was error handling. Go and Rust are the tw…Rust Ownership Made Me Feel Like a Junior Dev Again2022-02-14T00:00:00+00:002022-02-14T00:00:00+00:00https://sysrex.com/posts/rust-ownership-borrow-checker/I've been writing Go for years. I know what a pointer is, I know what a data race is, and I've made …Install Node Exporter on Linux Servers2020-02-14T00:00:00+00:002020-02-14T00:00:00+00:00https://sysrex.com/posts/install-node-exporter-on-linux/Installing node Exporter on Linux - updated for newer versions🔗
cd /tmp
Now lets run the copied URL …