Skip to content

Instantly share code, notes, and snippets.

View nateberkopec's full-sized avatar

Nate Berkopec nateberkopec

View GitHub Profile
@nateberkopec
nateberkopec / claude-code-review-workflow-report.md
Created September 8, 2026 23:50
Claude Code 2.1.220: the hidden JavaScript code-review workflow, its stages, and its activation conditions

The built-in code-review workflow in Claude Code 2.1.220

1. Result

Claude Code 2.1.220 contains a built-in JavaScript workflow named code-review.

The program registers this workflow with hidden: true. The workflow is inside the installed executable. It is not the public Markdown code-review plugin.

The workflow has five stages:

@nateberkopec
nateberkopec / gem_mfa_audit.rb
Created June 9, 2026 03:47
Audit Gemfile.lock gems for human MFA enforcement and Trusted Publishing
#!/usr/bin/env ruby
# frozen_string_literal: true
require "bundler"
require "cgi"
require "json"
require "net/http"
require "optparse"
require "thread"
require "uri"
@nateberkopec
nateberkopec / PLAN-yabeda-adapter.md
Created March 15, 2026 22:20
Plan: Yabeda monitoring system adapter for speedshop-cloudwatch

Plan: Yabeda Monitoring System Adapter

Goal

Add an optional Yabeda adapter so that users who define metrics via Yabeda's DSL can have those metrics sent to CloudWatch through the existing Reporter infrastructure (async batching, StatisticSet aggregation, queue overflow protection, high-resolution support).

This gem does not collect metrics via Yabeda. The existing Puma/Sidekiq/Rack/ActiveJob

@nateberkopec
nateberkopec / rename_png_refs.sh
Created March 10, 2026 23:14
Update all .png references to .jpg across a codebase using git status pairs
#!/bin/bash
# After converting PNGs to JPEGs, update all references in the codebase.
# Parses git status for deleted .png / new .jpg pairs and does a global find-and-replace.
# Usage: ./rename_png_refs.sh [directory]
set -euo pipefail
DIR="${1:-.}"
DRY_RUN="${DRY_RUN:-false}"
@nateberkopec
nateberkopec / rename_png_refs.sh
Last active March 10, 2026 23:18
Update all .png references to .jpg across a codebase using git status pairs
#!/bin/bash
# After converting PNGs to JPEGs, update all references in the codebase.
# Parses git status for deleted .png / new .jpg pairs and does a global find-and-replace.
# Usage: ./rename_png_refs.sh [directory]
set -euo pipefail
DIR="${1:-.}"
DRY_RUN="${DRY_RUN:-false}"
@nateberkopec
nateberkopec / png_to_jpeg.sh
Created March 10, 2026 23:03
Convert PNGs > 100KB to optimized JPEGs for Cloudflare Polish
#!/bin/bash
# Convert PNGs > 100KB to optimized JPEGs for Cloudflare Polish webp conversion
# Usage: ./png_to_jpeg.sh [directory]
# Requires: ImageMagick (convert), jpegoptim
set -euo pipefail
DIR="${1:-.}"
QUALITY=85
MIN_SIZE_KB=100
@nateberkopec
nateberkopec / heroku-inventory
Created March 4, 2026 21:37
heroku-inventory: Catalog all Heroku resources (formation, dynos, addons, buildpacks, config, metrics) for a team or app as JSON
#!/usr/bin/env bash
set -uo pipefail
usage() {
echo "heroku-inventory: Catalog Heroku resources" >&2
echo "" >&2
echo "Usage:" >&2
echo " heroku-inventory --team <team-name>" >&2
echo " heroku-inventory --app <app-name>" >&2
echo "" >&2
@nateberkopec
nateberkopec / README.md
Created March 3, 2026 00:38
Puma worker TERM/restart benchmark (Docker + k6): app, scripts, final artifacts, and results summary

Worker TERM/restart benchmark (Docker + k6)

This benchmark reproduces the scenario discussed in chat:

  • 4 Puma workers
  • open-model traffic at 12 req/s (k6 constant-arrival-rate)
  • synthetic Rack app with ~250ms service time
  • service alternates CPU and IO slices randomly every ~10ms
  • compare threads=5 vs threads=25
  • during traffic: kill one worker, wait for restart, let it serve ~5s, then kill a different worker (round-robin)

Unslopper local run notes

This repo is just a scratchpad for running the Unslopper model locally with llama.cpp.

What worked

  • Install llama.cpp via Homebrew.
  • Use the GGUF Q8_0 quant (the bf16 repo is too large for typical Mac memory).
  • Use llama-completion with a Qwen-style chat template prompt file and --no-conversation so it does a single completion and exits.
  • Redirect logs away from stdout so the output file is clean.
@nateberkopec
nateberkopec / Dockerfile
Created January 23, 2026 00:33
Puma closed_socket? tradeoff benchmark
FROM ruby:3.3-slim
RUN apt-get update \
&& apt-get install -y --no-install-recommends build-essential \
&& rm -rf /var/lib/apt/lists/*
RUN gem install puma -v 6.4.2
WORKDIR /app
COPY config.ru puma.rb /app/