ThinkingJoules

//CLIENT
Gun.on('opt', function (ctx) {
    if (ctx.once) {
      return
    }
    this.to.next(ctx)
    ctx.on('auth', function(msg){
      let to = this.to
      clientAuth(ctx)
      function clientAuth(ctx){

halfelf

https://web.archive.org/web/20110219163448/http://howtohft.wordpress.com/2011/02/15/how-to-build-a-fast-limit-order-book/

The response to my first few posts has been much larger than I’d imagined and I’d like to thank everyone for the encouragement.

If you’re interested in building a trading system I recommend first reading my previous post on general ideas to keep in mind.

My first really technical post will be on how to build a limit order book, probably the single most important component of a trading system. Because the data structure chosen to represent the limit order book will be the primary source of market information for trading models, it is important to make it both absolutely correct and extremely fast.

To give some idea of the data volumes, the Nasdaq TotalView ITCH feed, which is every event in every instrument traded on the Nasdaq, can have data rates of 20+ gigabytes/day with spikes of 3 megabytes/second or more. The individual messages average about 20 bytes each so this means handling

rm-rf-etc

#!/bin/bash
# Installs the ArangoDB Operator into a Kubernetes cluster

LOCAL_STORAGE_YAML="\
apiVersion: storage.arangodb.com/v1alpha
kind: ArangoLocalStorage
metadata:
  name: example-arangodb-storage
spec:
  storageClass:

kekru

Run commands on remote Docker host

This is how to connect to another host with your docker client, without modifying your local Docker installation or when you don't have a local Docker installation.

Enable Docker Remote API

First be sure to enable the Docker Remote API on the remote host.

This can easily be done with a container.
For HTTP connection use jarkt/docker-remote-api.

bsara

Setup SSH Authentication for Git Bash on Windows

Prepararation

0. Create a folder at the root of your user home folder (Example: C:/Users/uname/) called .ssh.
1. Create the following files if they do not already exist (paths begin from the root of your user home folder):

• .ssh/config

atoponce

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

DavidBruant

var els = document.querySelectorAll('a');
els.forEach(function(e){console.log(e.href);}); // TypeError: els.forEach is not a function

// Why?

// document.querySelectorAll returns a NodeList.
// First thing first, as opposed to other NodeList, this one is not live, mostly because the 
// implementation of a live object would be terribly complicated for some selectors

// NodeList are a DOM interface introduced in DOM core level 1 (random guess)