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Userful Libraries/modules

1. OpenAPI toolkit common string formats: github.com/go-openapi/strfmt
2. Seamless printing to the terminal (stdout) and logging to a io.Writer (file) that’s as easy to use as fmt.Println: https://github.com/spf13/jwalterweatherman
3. Go package for dealing with maps, slices, JSON and other data: https://github.com/stretchr/objx
4. Efficient JSON beautifier and compactor for Go: https://github.com/tidwall/pretty
5. bbolt is a fork of Ben Johnson's Bolt key/value store: https://pkg.go.dev/go.etcd.io/bbolt
6. Formatters for units to human friendly sizes: github.com/dustin/go-humanize
7. Package httpsnoop provides an easy way to capture http related metrics (i.e. response time, bytes written, and http status code) from your application's http.Handlers: https://github.com/felixge/httpsnoop
8. Staticcheck - The advanced Go linter: https://github.com/dominikh/go-tools

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#!/bin/bash
TEMP_DIR=$(mktemp -d)
echo Output Directory: ${TEMP_DIR}


confirm() {
#
# syntax: confirm [<prompt>]
#
# Prompts the user to enter Yes or No and returns 0/1.

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var observer = new IntersectionObserver(function (entries) {
    // isIntersecting is true when element and viewport are overlapping
    // isIntersecting is false when element and viewport don't overlap
    if (entries[0].isIntersecting === true)
        console.log(entries[0].target.id);
}, { threshold: [0] });

// Observe all H2 headings and get their id printed into the console whenever they are in focus
document.querySelectorAll("h2").forEach(function (item) {
    observer.observe(document.querySelector("#" + item.id));

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# very basic but you can see the gist of it:

aws cloudformation list-types --type RESOURCE --visibility PUBLIC | \
  jq '.TypeSummaries[].TypeName' | \
  cut -d\" -f2 | \
  while read a
  do
    aws cloudcontrol list-resources --type-name  $a 2>/dev/null| \
    jq '.ResourceDescriptions[].Identifier'
  done

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1. SRE deep dive into Linux Page Cache

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// This sample code triggers the problem if run against a large directory structure (+50K objects)
// I added some instrumention to check how many connections were being resued versus created new
// Please change the table name in line 283 and path in line 286

package main

import (
	"context"
	"crypto/md5"
	"strings"

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Download the file from

wget https://status.aws.amazon.com/data.json

basic parsing

jq -r '(.archive[] | 
       (.date| tonumber | todate) as $D | 
       select($D | startswith("2021"))| 
 [.service_name, $D[0:10] ,.service,.summary]) | @csv ' \

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ldd /var/task/node_modules/puppeteer/.local-chromium/linux-869685/chrome-linux/chrome | grep not | \
    cut -d= -f1 | while read a 
    do   
        yum provides $a | head -2 | tail -1 | cut -d\  -f1
    done

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FROM ubuntu:18.04

ARG openssl_arch=linux-x86_64
ENV RUSTUP_HOME=/usr/local/rustup \
    CARGO_HOME=/usr/local/cargo \
    PATH=/usr/local/cargo/bin:$PATH \
    DEBIAN_FRONTEND=noninteractive 

RUN apt-get update \
    && apt-get -y install curl wget lsb-release wget software-properties-common \

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# Config file to add a Prometheus receiver - not fully as I can't make it scrape another process yet
extensions:
  health_check:

receivers:
  prometheus:
    config:
      scrape_configs:
        - job_name: "otel-collector"
          scrape_interval: 5s