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Being Professional

Yu Zhanbei zhanbei

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Being Professional
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@enricofoltran
enricofoltran / main.go
Last active June 26, 2024 12:16
A simple golang web server with basic logging, tracing, health check, graceful shutdown and zero dependencies
package main
import (
"context"
"flag"
"fmt"
"log"
"net/http"
"os"
"os/signal"
@rushilgupta
rushilgupta / GoConcurrency.md
Last active July 11, 2024 12:52
Concurrency in golang and a mini Load-balancer

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

@Andrew-Reid
Andrew-Reid / index.html
Last active October 26, 2019 07:07
Tidy Tree vs Dendogram
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title></title>
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
.node circle {
fill: #fff;
stroke: steelblue;
@wrunk
wrunk / GolangJSONCustomMarshal.go
Created October 12, 2016 22:59
Golang JSON Custom Marshal
/*
In a fairly typical webapp data model you often want to send
the client different "views" of the data model.
Many database and caching tools require the base model to be quite
standard with json tags and types, so the following approach is
ideal:
Based on this blog post and SO question:
@danallison
danallison / downloadString.js
Created September 29, 2014 16:44
download string as text file
function downloadString(text, fileType, fileName) {
var blob = new Blob([text], { type: fileType });
var a = document.createElement('a');
a.download = fileName;
a.href = URL.createObjectURL(blob);
a.dataset.downloadurl = [fileType, a.download, a.href].join(':');
a.style.display = "none";
document.body.appendChild(a);
a.click();
@subudeepak
subudeepak / WebSockets.md
Last active May 31, 2024 09:36
The problems and some security implications of websockets - Cross-site WebSockets Scripting (XSWS)

WebSockets - An Introduction

WebSockets is a modern HTML5 standard which makes communication between client and server a lot more simpler than ever. We are all familiar with the technology of sockets. Sockets have been fundamental to network communication for a long time but usually the communication over the browser has been restricted. The general restrictions

  • The server used to have a permanent listener while the client (aka browser) was not designated any fixed listener for a more long term connection. Hence, every communication was restricted to the client demanding and the server responding.
  • This meant that unless the client requested for a particular resource, the server was unable to push such a resource to the client.
  • This was detrimental since the client is then forced to check with the server at regular intervals. This meant a lot of libraries focused on optimizing asynchronous calls and identifying the response of asynchronous calls. Notably t
@matteofigus
matteofigus / mongo-ls.js
Created February 6, 2014 12:29
A script to list all the collections and document count for a specific mongodb db
// Usage: mongo {Server without mongodb:// example 127.0.0.1:27017}/{DbName} [-u {Username}] [-p {Password}] < ./mongo-ls.js
var collections = db.getCollectionNames();
print('Collections inside the db:');
for(var i = 0; i < collections.length; i++){
var name = collections[i];
if(name.substr(0, 6) != 'system')
print(name + ' - ' + db[name].count() + ' records');
@branneman
branneman / better-nodejs-require-paths.md
Last active June 29, 2024 16:00
Better local require() paths for Node.js

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

@mbostock
mbostock / .block
Last active February 14, 2024 20:43 — forked from mbostock/.block
Cluster Dendrogram
license: gpl-3.0
height: 2000
border: no
redirect: https://beta.observablehq.com/@mbostock/d3-cluster-dendrogram
@domenic
domenic / promises.md
Last active June 24, 2024 03:11
You're Missing the Point of Promises

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.