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@cngondo
cngondo / Webpack.config.js
Last active March 16, 2022 20:50
SIMPLE WEBPACK 5 SETTINGS WITH CORRESPONDING package.json FOR REACT
const dev = process.env.NODE_ENV !== 'production' // Loads the environment that you're running on
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const {CleanWebpackPlugin} = require('clean-webpack-plugin');
module.exports = {
mode:'development',
devtool: dev ? 'inline-source-map': 'eval-source-map', // Maps the line numbers of jsx files to the ones in the bundle
entry: path.join( __dirname, 'client/src/index.jsx'),
module: { // All modules to be used in the app
@MauricioMoraes
MauricioMoraes / access_postgresql_with_docker.md
Last active May 27, 2024 01:21
Allow Docker Container Access to Host's Postgres Database on linux (ubuntu)

You have to do 2 things in order to allow your container to access your host's postgresql database

  1. Make your postgresql listen to an external ip address
  2. Let this client ip (your docker container) access your postgresql database with a given user

Obs: By "Host" here I mean "the server where docker is running on".

Make your postgresql listen to an external ip address

Find your postgresql.conf (in case you don't know where it is)

$ sudo find / -type f -name postgresql.conf

@ibraheem4
ibraheem4 / postgres-brew.md
Last active June 16, 2024 04:48 — forked from sgnl/postgres-brew.md
Installing Postgres via Brew (OSX)

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

  1. brew doctor
  2. brew update
@ziluvatar
ziluvatar / token-generator.js
Last active June 15, 2024 07:23
Example of refreshing tokens with jwt
/**
* Example to refresh tokens using https://github.com/auth0/node-jsonwebtoken
* It was requested to be introduced at as part of the jsonwebtoken library,
* since we feel it does not add too much value but it will add code to mantain
* we won't include it.
*
* I create this gist just to help those who want to auto-refresh JWTs.
*/
const jwt = require('jsonwebtoken');
@joewiz
joewiz / post-mortem.md
Last active September 3, 2023 11:57
Recovery from nginx "Too many open files" error on Amazon AWS Linux

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
@apolloclark
apolloclark / postgres cheatsheet.md
Last active June 14, 2024 08:25
postgres cheatsheet

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

@Kartones
Kartones / postgres-cheatsheet.md
Last active June 26, 2024 18:01
PostgreSQL command line cheatsheet

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
@miguelmota
miguelmota / nodejs-directory-structure.md
Last active December 2, 2023 08:47
Node.js MVC directory structure example.
Node.js MVC directory structure example.
├── app
│   ├── controllers
│   │   ├── admin
│   │   │   ├── posts.js
│   │   │   └── users.js
│   │   ├── posts.js
│ │ ├── session.js