icebob

Health-check middleware for Moleculer

Use it for Kubernetes liveness & readiness checks. The middleware opens a HTTP server on port 3001. To check, open the http://localhost:3001/live & http://localhost:3001/ready URL.

Response

{
  "state": "up",
  "uptime": 7.419,

tobydeh

Create a cluster on GKE:

gcloud container clusters create backend --num-nodes=2 --machine-type n1-standard-4

Get credentials:

gcloud container clusters get-credentials backend

Build the docker image:

jeanlucaslima

Usuários de Ember.js

Empresas/apps/projetos brasileiros, portuguese e de outros locais que falam português e utilizam Ember.js.

Última atualização: 2017/maio

Brasil

calebroseland

import Vue from 'vue'
import {DataStore, Record} from 'js-data'


// define a base class that enables property-level vue reactivity.
export class VueReactiveRecord extends Record {
  constructor (...args) {
    // among other things, this will apply js-data schema if configured to do so; be sure to do `track: true`
    super(...args) 
    

ivan-loh

# Plain Ol' Node
node --max-old-space-size=1024 app.js                     # increase to 1gb
node --max-old-space-size=2048 app.js                     # increase to 2gb
node --max-old-space-size=3072 app.js                     # increase to 3gb
node --max-old-space-size=4096 app.js                     # increase to 4gb
node --max-old-space-size=5120 app.js                     # increase to 5gb
node --max-old-space-size=6144 app.js                     # increase to 6gb

# For pm2
pm2 start app.js --node-args="--max-old-space-size=1024" # increase to 1gb

joewiz

On Tue Oct 27, 2015, history.state.gov began buckling under load, intermittently issuing 500 errors. Nginx's error log was sprinkled with the following errors:

2015/10/27 21:48:36 [crit] 2475#0: accept4() failed (24: Too many open files)

2015/10/27 21:48:36 [alert] 2475#0: *7163915 socket() failed (24: Too many open files) while connecting to upstream...

An article at http://www.cyberciti.biz/faq/linux-unix-nginx-too-many-open-files/ provided directions that mostly worked. Below are the steps we followed. The steps that diverged from the article's directions are marked with an *.

1. * Instead of using su to run ulimit on the nginx account, use ps aux | grep nginx to locate nginx's process IDs. Then query each process's file handle limits using cat /proc/pid/limits (where pid is the process id retrieved from ps). (Note: sudo may be necessary on your system for the cat command here, depending on your system.)
2. Added fs.file-max = 70000 to /etc/sysctl.conf

mikermcneil

Publishing an NPM package

Here's what I do when I publish an NPM package.

1: Make sure you're up to date

I always like to check what's going on in a repo before I do anything:

mphasize

/**
 * beforeCreate
 *
 * @module      :: Policy
 * @description :: Simple policy to inject the user creating a record into the records values.
 *                 Assumes req.user && req.user.id to be set when a user is logged in.
 * @docs        :: http://sailsjs.org/#!documentation/policies
 *
 */

obolton

AWS ELB with Node.js and WebSockets

This assumes that:

• You are using Nginx.
• You want to accept incoming connections on port 80.
• Your Node.js app is listening on port 3000.
• You want to be able to connect to your Node.js instance directly as well as via the load balancer.

####1. Create load balancer

goshmx

//This fragment goes in your config/http.js file.
//Ensure to install skipper previusly...
//Tested in Sails.js v0.10.5 


module.exports.http = {
  bodyParser: (function () {
    var opts = {limit:'50mb'};
    var fn;