hermanbanken

// adapted from default
export const settings = {
  ...defaultSettings,
  useStunTurn: true,
  p2p: {
    enabled: false, // disabled for testing
    useStunTurn: true,
  },
  // Some other settings for resolution & parallel talking as relevant for our usecase
}

hermanbanken

Envoy Cluster SubSet Load Balancing

This gist is part of a blog post:

• Full repository: https://github.com/hermanbanken/envoy-xds/
• Blog post: https://www.hermanbanken.nl/2020/08/24/custom-envoy-xds-golang-cluster-subsets/

hermanbanken

# Remember, never run shell scripts from the internet: go ahead verify the SHA!
curl https://gist.githubusercontent.com/hermanbanken/96925cb9593137fd6816cefd8ac7e93a/raw/070f6bde93b362388b5612648ef17ae612e3cc5c/scan_filenames.sh | \
sed s/=grep/=ggrep/ | \
bash -x

hermanbanken

kind: Deployment
# repro1.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo
  namespace: default
spec:
  replicas: 2
  # in next apply we'll remove this replicas property

hermanbanken

Reproducible Container Image SHA's with Kaniko

At Q42 we use Docker a lot nowadays. A few projects use full-fledged Kubernetes on GKE with Docker images. Other projects use docker with AppEngine Flex, which has become our standard for quickly deploying a standalone workload, because it does the boring things like hosting & SSL (LetsEncrypt) for us.

In one particularly large project (Hue) we have a multitude of different micro-services that all have separate Docker images. Combined with CI/CD releasing to our test & staging environments,

hermanbanken

node_modules
package-lock.json

hermanbanken

type Muxed struct {
  IsLast bool;
  Payload []byte;
}

type State struct {
  ReplyTo chan interface{}
}

// Incoming attaches [channel(buffer: 1)], if Mux finds multi-packet reply,

hermanbanken

// This is the bare-minimum you need to know to create a SwiftUI.BindableObject with a Combine.Publisher

final class MyUserData: BindableObject  {
    // this ==vvvvvvv must be a `Publisher` type
    let didChange = PassthroughSubject<MyUserData, Never>()
    
    var myProperty = false {
        didSet {
            // this ==vvvvvvv
            didChange.send(self)

hermanbanken

//
//  Test.swift
//  Q42
//
//  Created by Herman Banken on 6/4/19.
//
import Foundation
import Combine
import RxSwift

hermanbanken

@available(iOS 13.0, *)
func exampleCombineKVO () {
    let article = Article(title: "Test", body: "Lorum ipsum")
    // For a KeyPath 101, see https://www.swiftbysundell.com/posts/the-power-of-key-paths-in-swift
    let keypath: ReferenceWritableKeyPath<Article,String> = \.title
    
    // The new Combine stuff:
    let sink = Subscribers.Assign(object: article, keyPath: keypath)

    let source = Publishers.Future<String, Never> { subscriber in