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@Froelund
Froelund / _error.tsx
Last active November 30, 2023 04:35
Next.js Typescript error reporting
import { captureException, flush } from '@sentry/nextjs';
import NextErrorComponent from 'next/error';
import type { ErrorProps } from 'next/error';
import type { NextPage } from 'next';
interface AppErrorProps extends ErrorProps {
err?: Error;
hasGetInitialPropsRun?: boolean;
}
@fabiolimace
fabiolimace / UUIDv6.sql
Last active July 9, 2025 13:06
Functions for generating UUIDv6 and UUIDv7 on PostgreSQL
/*
* MIT License
*
* Copyright (c) 2023-2024 Fabio Lima
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is

How to setup a practically free CDN using Backblaze B2 and Cloudflare

⚠️ Note 2023-01-21
Some things have changed since I originally wrote this in 2016. I have updated a few minor details, and the advice is still broadly the same, but there are some new Cloudflare features you can (and should) take advantage of. In particular, pay attention to Trevor Stevens' comment here from 22 January 2022, and Matt Stenson's useful caching advice. In addition, Backblaze, with whom Cloudflare are a Bandwidth Alliance partner, have published their own guide detailing how to use Cloudflare's Web Workers to cache content from B2 private buckets. That is worth reading,

@ErikAugust
ErikAugust / spectre.c
Last active July 2, 2025 16:33
Spectre example code
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#ifdef _MSC_VER
#include <intrin.h> /* for rdtscp and clflush */
#pragma optimize("gt",on)
#else
#include <x86intrin.h> /* for rdtscp and clflush */
#endif
@acdlite
acdlite / coordinating-async-react.md
Last active June 17, 2024 11:56
Demo: Coordinating async React with non-React views

Demo: Coordinating async React with non-React views

tl;dr I built a demo illustrating what it might look like to add async rendering to Facebook's commenting interface, while ensuring it appears on the screen simultaneous to the server-rendered story.

A key benefit of async rendering is that large updates don't block the main thread; instead, the work is spread out and performed during idle periods using cooperative scheduling.

But once you make something async, you introduce the possibility that things may appear on the screen at separate times. Especially when you're dealing with multiple UI frameworks, as is often the case at Facebook.

How do we solve this with React?

@ebachter
ebachter / iframe_handling_in_react.js
Last active October 6, 2019 10:58
iframe handling in react
import React from 'react';
import { connect } from 'react-redux';
class PageWidget extends React.Component {
componentDidMount() {
this.ifr.onload = () => {
this.ifr.contentWindow.postMessage('hello', '*');
};
window.addEventListener("message", this.handleFrameTasks);
}
@marianogappa
marianogappa / backpressure.go
Created December 4, 2016 04:53
Example backpressure implementation in Go
/*
This snippet is an example of backpressure implementation in Go.
It doesn't run in Go Playground, because it starts an HTTP Server.
The example starts an HTTP server and sends multiple requests to it. The server starts denying
requests by replying an "X" (i.e. a 502) when its buffered channel reaches capacity.
This is not the same as rate-limiting; you might be interested in https://github.com/juju/ratelimit
or https://godoc.org/golang.org/x/time/rate.
@xcsrz
xcsrz / whoiswatching.sh
Created November 7, 2016 19:42
Who can see/sniff your dns queries?
traceroute 8.8.8.8|awk -F[\(\)] '$2~/[0-9]/{print $2}'|while read i;do whois $i | awk -F ":\s*" '/^(OrgName|City|State|Country)/ {gsub(/^[ \t]+|[ \t]+$/, "", $2); printf $2" "}'; echo $i; done
@miroslav-mrazek
miroslav-mrazek / FooFormFactory.php
Last active November 5, 2022 10:28
Nette form factory
<?php
namespace App\Model\Data;
use Nette\Application\UI\Form;
class FooFormFactory
{
{
"functionCalls": [
{
"function": "\\array_diff_assoc",
"position": 0
},
{
"function": "\\array_diff_key",
"position": 0
},