P.01Rust 1.99.0 lets you define C-variadic functions in Rust, adds raw layout APIs and a Box::leak warning. What changed, what to audit, and whether to upgrade.
P.02Rust 1.100 drops host tools for i686 Windows. Here is how to build 32-bit Windows binaries from a 64-bit machine, with MSVC, MinGW and a CI setup.
P.03Python 3.15 made UTF-8 the default encoding on every platform. Here is how to find the open() calls that change behavior, and fix them before upgrading.
P.04WAL mode lets SQLite readers and a writer work at once. Here is how it works, the pragmas to set, and the three ways it bites in production.
P.05Deno Deploy shuts down six months after the October 9, 2026 Cloudflare news. Here is the timeline and how to move each Deno API to Cloudflare Workers.
P.06Node.js 26.11.0 adds --process-timeout, histogram snapshots and diffs, Buffer.stringLength() and header validators. What to adopt, and the sqlite rename.
P.07Next.js 16.4 recommends Cache Components for every app and makes them the default in create-next-app. What changed, what to enable, and whether to upgrade.
P.08Use zstd as your default, LZ4 when decompression speed beats size, gzip only for compatibility. Benchmark numbers, code and a decision table for 2026.
P.09Mistral Large 4 is a 1-trillion-parameter model with 49B active, in API preview since Oct 6, weights due Oct 27. What is confirmed, what isn't, what to do.
P.10MVCC keeps several versions of each row so reads never wait on writes. See xmin and xmax in a live Postgres session, and why long transactions cause bloat.
P.11Your p99 is slower than your average suggests, and fan-out makes it worse. How hedged requests and load shedding cut tail latency, with TypeScript code.
P.12An LSM tree turns random writes into sequential ones by buffering in memory and merging sorted files. How it works, what compaction costs, and when to pick it.
