andrewchilds

How to configure HAProxy to support end-to-end (e2e) connections that switch from h2 to h2c

This was tested to work using HAProxy 2.8 on Ubuntu 20.04.

Use case

This lets you run a cluster of API servers configured to use HTTP/2 (for example, Fastify using { http2: true }), behind a HAProxy LB, so that you can serve typical REST API requests as well as SSE (Server Side Events) streaming connections, so that you can do fancy real-time page updates in your app.

Using HTTP/2 resolves the "6 concurrent HTTP connections" limit imposed by Chrome/Firefox/etc, which means the web app would become unresponsive if the user has 6+ tabs open with the app simultaneously.

andrewchilds

javascript:function parseChatGPTData(data) { const mapping = data.mapping; const conversationTitle = data.title; const createDate = new Date(data.create_time * 1000).toISOString().slice(0, 10); const messagesArray = Object.values(mapping) .filter(node => node.message) .map(node => { const message = node.message; const sender = message.author.role === 'user' ? 'You' : 'Assistant'; const content = message.content.parts.join(''); const createTime = message.create_time; return { sender: sender, content: content, createTime: createTime, }; }); messagesArray.sort((a, b) => a.createTime - b.createTime); return { date: createDate, title: conversationTitle, messages: messagesArray.map(({ sender, content }) => ({ sender, content })), }; } function download(filename, text) { const element = document.createElement('a'); element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(text)); element.setAttribute('download', filename); element.style.display = 'none'; document.body.appendChild(element); e

andrewchilds

andrewchilds

const tableName = 'crayons';

const crayons = [
  { id: 1, color: 'blue', updated_at: new Date('2022-02-10T11:31:25-0500') },
  { id: 2, color: 'black', updated_at: new Date('2022-02-10T11:31:25-0500') },
  { id: 3, color: 'brown', updated_at: new Date('2022-02-10T11:31:25-0500') },
  { id: 4, color: 'green', updated_at: new Date('2022-02-10T11:31:25-0500') },
];

// Upsert multiple entries to a table, returning number of rows changed

andrewchilds

// Converts a getTimezoneOffset() offset to one that can be used in new Date().
// Examples:
// Eastern Standard Time: 240 -> '-04:00'
// India Standard Time: -330 -> '+05:30'
// Australian Central Western Standard Time: -525 -> '+08:45'
export function getTimezoneOffset(d) {
  return convertTimezoneOffset(d.getTimezoneOffset());
}

export function convertTimezoneOffset(offset) {

andrewchilds

// Simple implementation of lodash.cloneDeep
// Does not clone functions or handle recursive references.
export function deepClone(original) {
  if (original instanceof RegExp) {
    return new RegExp(original);
  } else if (original instanceof Date) {
    return new Date(original.getTime());
  } else if (Array.isArray(original)) {
    return original.map(deepClone);
  } else if (typeof original === 'object' && original !== null) {

andrewchilds

// Simple implementation of lodash.get
// Handles arrays, objects, and any nested combination of the two.
// Also handles undefined as a valid value - see test case for details.
// Based on: https://gist.github.com/harish2704/d0ee530e6ee75bad6fd30c98e5ad9dab
export function deepGet(obj, query, defaultVal) {
  query = Array.isArray(query) ? query : query.replace(/(\[(\d)\])/g, '.$2').replace(/^\./, '').split('.');
  if (!(query[0] in obj)) {
    return defaultVal;
  }
  obj = obj[query[0]];

andrewchilds

/*

This is a quick attempt to make Google Meet work better for someone in Kindergarten
(one in particular - it may or may not work for yours).

Requirements:
- I used the "Stylebot" extension to make this CSS work, but any other related extension should also work.

Changes:
- Hides the "who's here" rotating carousel which is distracting.

andrewchilds

for (var i = 0; i < 1000; i++) {
  logAndRedirect(i);
}

window.location.href = window.location.href;

function logAndRedirect(i) {
  setTimeout(function () {  
    window.console.log(i);
  }, i);

andrewchilds

#!/bin/bash

set -e

APP_DIR="$1"

TEMP_FILE="codebase-age-histogram.txt"
OUTPUT_FILE="codebase-age-histogram.csv"

pushd $APP_DIR