ernestoalejo

func foo() {
	mylist := []*thing{...}
	
	var wg sync.WaitGroup
	ch := make(chan *thing)
	for i := 0; i < maxWorkers; i++ {
		wg.Add(1)
		go worker(&wg, ch)
	}

enricofoltran

package main

import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

anvk

--- PSQL queries which also duplicated from https://github.com/anvk/AwesomePSQLList/blob/master/README.md
--- some of them taken from https://www.slideshare.net/alexeylesovsky/deep-dive-into-postgresql-statistics-54594192

-- I'm not an expert in PSQL. Just a developer who is trying to accumulate useful stat queries which could potentially explain problems in your Postgres DB.

------------
-- Basics --
------------

-- Get indexes of tables

tcnksm

gRPC Best Practice @ CoreOSFest 2017

https://coreosfest2017.sched.com/event/AWYc/best-practices-for-go-grpc-services-doug-fawley-google

Just small note for me. Hope the slide will be opened.

• API design
  • Idmpotency
    • It should be safe to retry an RPC without knowing whether it was processed
• Example

danidiaz

Papers

Time clock and the ordering of events in a distributed system

Consensus on Transaction Commit

An empirical study on the correctness of formally verified distributed systems

Byzantizing Paxos by Refinement

001101

CREATE TABLE accounts(
	id serial PRIMARY KEY,
	name VARCHAR(256) NOT NULL
);

CREATE TABLE entries(
	id serial PRIMARY KEY,
	description VARCHAR(1024) NOT NULL,
	amount NUMERIC(20, 2) NOT NULL CHECK (amount > 0.0),
	-- Every entry is a credit to one account...

nathanl

-- (This code was run in PostgreSQL 9.6.1)
-- Demonstration of how serializable isolation for PostgreSQL, which detects possible
-- interference between concurrent transactions, can produce false positives

-- in psql, create the following table

CREATE TABLE users(
  id SERIAL NOT NULL PRIMARY KEY,
  username VARCHAR NOT NULL
);

miku

{
	"Name": "Elvis",
	"Location": "Memphis"
}

harlow

Golang Workers / Job Queue

A running example of the code from:

• http://marcio.io/2015/07/handling-1-million-requests-per-minute-with-golang
• http://nesv.github.io/golang/2014/02/25/worker-queues-in-go.html

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.

dtjm

package join

import (
	"fmt"
	"strings"
	"testing"
)

var (
	testData = []string{"a", "b", "c", "d", "e"}