cflynn07

Ch 2. Docker
Three things to be aware of when referring to docker as a tech
Runtime
Lowest level, starts/stops containers. Builds OS constructs like namespaces and cgroups
Containerd & runc
runc - low-level runtime, interface with OS start/stop. Every container has a runc instance managing it.
containerd - higher-level runtime, manages entire lifecycle including pulling images
Daemon
Orchestrator
OCI - governance council, standardizes low-level fundamental components of container infrastructure

cflynn07

0 who conceived go	Robert Griesemer<div>Rob Pike</div><div>Ken Thompson</div>
0 CSP	Communicating Sequential Processes<div><br></div><div>Tony Hoare 1978 paper on foundations of concurrency</div><div><br></div><div>Go ancestor</div>
0&nbsp;pernicious	<div><div><div>having a harmful effect, especially in a gradual or subtle way<br></div></div></div>
p4 half-open intervals	indexing intervals that include the first index but exclude the last<div><br></div><div>used in Go and most languages</div>
p4 slice interval omission: someslice[1:]	if n is omitted, defaults to 0 or len(someslice)
p5 variable implicit initialization	"if variable declaration doesn't initialize a value, the variable is implicitly initialized to the zero value for its type.<div><br></div><div>"""" for strings</div><div>0 for numbers</div>"
p9 allowed map key types	a value of any type whose values can be compared with ==
&nbsp;p9 iteration order of map	random.
p9 bufio.Scanner	reads input and breaks it into lines or words, often easiest way to p

cflynn07

p31 Claude Shannon	systematized use of binary numbers into math/logic that computer use<div><br><div><div>well known for founding&nbsp;digital circuit&nbsp;design theory in 1937 (wikipedia)<br></div></div></div>
p31 Ted Nelson	"Description of computer ""a box that follows a plan""<div><br></div><div><b>Theodor Holm Nelson</b>&nbsp;(born June 17, 1937) is an American pioneer of&nbsp;information technology, philosopher and sociologist. He coined the terms&nbsp;<i>hypertext</i>&nbsp;and&nbsp;<i>hypermedia</i>&nbsp;in 1963 and published them in 1965. (wikipedia)<br></div>"
p32 harvard architecture	Mark1, early computer (1944), stored instructionns and data separately
p32 protean	<div><div><div><i>adjective</i></div><div><b></b></div></div></div><div><div><div><div><div><div>tending or able to change frequently or easily.</div></div></div></div></div></div>
p32 John von Neumannn	Guy who had insight that computer programs are data and should be stored in same memory system
p33 system memory	~ long row of storage co

cflynn07

# sort by date added

foo () {
  while read f
  do
      echo "$(git log --format="%at" --reverse "$f" | head -n1) --> $f"
  done | sort -n
}

find ./til-autoformat-readme | foo

cflynn07

# p2
- JS representation of DOM, diffing in userland

# p16
- http//semantic-ui.com (bootstrap alternative)

# p19
- first annoying side quest, figure out how to make `standardjs` compatible with project
  - added standard config to package.json

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#!/bin/bash

RESULT=$(for file in web/static/images/fullstack-react-time-tracking{"","-1","-2","-3"}.png; do
  echo $file
  echo -n "before:\t"; du -h $file | awk '{print $1}'
  magick convert $file -resize 50% $file
  echo -n "after:\t"; du -h $file | awk '{print $1}'
done)
echo $RESULT
echo $RESULT | pbcopy

cflynn07

- deprecation of mysql query browser for mysql workbench
- use of mycli
- p65 tips for using wildcards, avoid wildcard at start of string - performance
- p91 SOUDNEX, never heard of this before
-
- p102 COUNT(*) all rows, COUNT(column) only rows with NON-NULL values for column
- p113 "WITH ROLLUP"

- p114 * WHERE does not work with groups (WHERE doesn't know what a group is)
  - HAVING <-- this works on groups, I didn't previously know this

cflynn07

# Chapter 1

###### p1
- Reason for storage engine architecture is to separate query processing and data
  storage & retrieval

###### p4
- two lock types: shared locks, exclusive locks (read locks, write locks) - lock granularity is customizable in MySQL
    - table locks - lowest overhead
    - READ LOCAL - table lock, allows some types of concurrent write ops

cflynn07

package handlers

import (
	"html/template"
	"io/ioutil"
	"log"
	"net/http"
)

// HomeHandler / route handler

cflynn07

# Casey Flynn <cflynn.us@gmail.com>
# January 18, 2019

source /Users/caseyflynn/antigen.zsh

# Load the oh-my-zsh's library.
antigen use oh-my-zsh

# Bundles from the default repo (robbyrussell's oh-my-zsh).
antigen bundle git