Sacha Arbonel sachaarbonel

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

Golang Workers / Job Queue

A running example of the code from:

This gist creates a working example from blog post, and a alternate example using simple worker pool.

TLDR: if you want simple and controlled concurrency use a worker pool.

Minimal example making webpack and wasm/Emscripten work together.

Build instructions:

Clone this gist
npm install
npm start
Open http://localhost:8080
Look at console

Zero knowledge databases

The idea

The idea is to provide a database as a service to end users in such a way that no one except the user herself can access the data, not even the hosting provider or the database administrator.

Advantages

A privacy- and/or security-conscious user will have more trust in such a setup.
The service provider cannot be coerced to release the data they were trusted with, and he cannot be held responsible for the content he is storing.

	# vim: ft=bash ts=2 sw=2 sts=2
	#
	# agnoster's Theme - https://gist.github.com/3712874
	# A Powerline-inspired theme for BASH
	#
	# (Converted from ZSH theme by Kenny Root)
	#
	# # README
	#
	# In order for this theme to render correctly, you will need a

	package main

	import (
	"github.com/chuckpreslar/emission"
	"github.com/garyburd/redigo/redis"
	"github.com/gorilla/websocket"
	"log"
	"net/http"
	)

	//
	// Companion code to https://medium.com/statuscode/pipeline-patterns-in-go-a37bb3a7e61d
	//
	// To run:
	// go get github.com/pkg/errors
	// go run -race pipeline_demo.go
	//

	package main

	package main

	import (
	"encoding/json"
	"fmt"
	"log"
	"net/http"
	"strings"
	"time"

	// Copyright 2015 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'dart:async';

	import 'package:flutter/foundation.dart';
	import 'package:flutter/material.dart';
	import 'package:flutter/widgets.dart';

	apiVersion: v1
	kind: Service
	metadata:
	name: ipfs
	spec:
	type: NodePort
	ports:
	- name: ipfs
	port: 8080
	targetPort: 8080