My Portfolio https://prasses.com.np This is my portfolio RSS feed Tiered fair-share dispatcher: the architecture of barista-rs https://prasses.com.np/blog/tiered-fair-share-dispatcher How barista-rs shares a few containers between paying tenants: Start-time Fair Queuing with per-tenant tags, one dispatch per PostgreSQL transaction, leases with fencing tokens, and a usage decay that gives fairness a memory. Sun, 15 Nov 2026 00:00:00 GMT Postgres as a job queue: SKIP LOCKED and where it breaks https://prasses.com.np/blog/postgres-job-queue-skip-locked Why a jobs table beats a broker for most apps, how FOR UPDATE SKIP LOCKED makes claiming a job safe, and the MultiXact SLRU wall you hit once workers number in the thousands. Wed, 11 Nov 2026 00:00:00 GMT The Trouble with Distributed Systems https://prasses.com.np/blog/ddia-09-trouble-with-distributed-systems DDIA chapter 9: networks that drop and delay, clocks that lie, processes that pause, and why a lease is only safe with a fencing token. Plus what it changed in barista-rs. Tue, 10 Nov 2026 00:00:00 GMT Reading Designing Data-Intensive Applications https://prasses.com.np/blog/ddia-00-intro Why I am working through DDIA, how I am reading it, and how these notes are laid out. Sun, 08 Nov 2026 00:00:00 GMT Actor Model: Using channels to access shared state https://prasses.com.np/blog/actors-with-tokio A first post, and a quick reference for adding images to posts on this site. Mon, 02 Nov 2026 00:00:00 GMT The boring parts, automated https://prasses.com.np/blog/dotfiles What my terminal does for me every day, so I can think about the problem instead of the tooling. Mon, 28 Sep 2026 00:00:00 GMT Rust Code Hygiene and Harness in the age of AI https://prasses.com.np/blog/rust-ai-harness The harness I put around AI-written Rust so slop never reaches main: lints, hooks, CI, pinned data, and rules the agent has to read. Fri, 25 Sep 2026 00:00:00 GMT The N+1 query problem https://prasses.com.np/blog/nplus1-query-problem One query for the list, one more query per row. What it looks like in the log, why the ORM does it, and the fix in JPA and in Diesel. Wed, 09 Sep 2026 00:00:00 GMT Atomicity in DB Systems (Postgres specific) https://prasses.com.np/blog/atomicity-in-db The A in ACID, from BEGIN and ROLLBACK down to xmin, xmax, the commit log and the WAL: how PostgreSQL makes a transaction all-or-nothing. Tue, 08 Sep 2026 00:00:00 GMT