REPL YELL!
More More More programming and technology musings.
Shed Load, Not Tears: Lessons from the GitHub Incident
What GitHub’s August 17 outage teaches about load shedding on shared, multi-tenant OpenShift clusters.
Minecraft running on SBCL using OpenLDK
Minecraft and OpenJDK libs transpile to Common Lisp… and work.
The libffi plan cache is coming to GLib
Christian Hergert wired the new ffi_call_plan API into GLib and made GClosure invocation up to 25 percent faster.
Performance improvements in libffi
libffi re-derives the same argument layout on every call. A new API lets a caller build that layout once and reuse it, several times faster, with no writable-executable memory.
Mitigating Copy Fail Without a Reboot
A BPF LSM program that blocks CVE-2026-31431 at runtime.
libffi Lands in Node.js
Node.js is shipping a built-in node:ffi module powered by libffi — a library I wrote 30 years ago.
Whistler for Observability in High-Performance Computing
Whistler just landed its first real-world user — tracing syscalls on a HPC cluster for finance.
Cash Money
How many physical U.S. bills will be printed before January 2029, and how long will they stick around?
Whistler: Live eBPF Programming from the Common Lisp REPL
Writing, compiling, loading, and querying eBPF programs in one Lisp form.
SBCL Fibers: Lightweight Cooperative Threads
A draft design document describing lightweight userland cooperative threads for SBCL.