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# Don't add passphrase
ssh-keygen -t rsa -b 4096 -m PEM -f jwt.key

openssl rsa -in jwt.key -pubout -outform PEM -out jwt.pub

# remove the jwt.key.pub you don't need it
rm -rf jwt.key.pub

cat jwt.key
cat jwt.pub

aprilmintacpineda

Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

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service: service-name

provider:
  name: aws
  runtime: nodejs6.10

functions:
  myfunc:
    handler: handler.myfunc

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Serverless plugin author's cheat sheet

This cheat sheet provides a detailed overview of the exposed lifecycle events and available commands (and entrypoints) of the Serverless framework, that can be hooked by plugins (internal and external ones). The document is structured by the commands invoked by the user.

Lifecycle events are shown as the globally available outer events (all providers) and sub lifecycle events that are provider specific in the called order. Currently only the AWS provider is shown. If you have information about the other provider,

aprilmintacpineda

const baseQuery = q.Paginate(q.Match(q.Index(indexName), terms));
// or
// const baseQuery = q.Paginate(q.Collection(collectionName))

const expandedQuery = q.Map(baseQuery, (ref) =>
  q.Let(
    {
      instance: q.Get(q.Var('ref'))
    },
    {

aprilmintacpineda

module.exports = {
  env: {
    browser: true,
    node: true,
    es6: true,
    'jest/globals': true
  },
  root: true,
  plugins: ['jest', 'react'],
  extends: [

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Fun with JS, PHP, PY, and Java

Lots of developers argue about which programming language should be used to do this and that, in reality, all their answers are hugely affected by self bias, most of the time, programmers would use something in favor of something else because of comfortability, they are simply more comfortable using whatever they chose.

All high-level programming languages are pretty much alike, they were built on top of the same concepts, there's MVC in PHP, Java, JavaScript, Python, .NET, etc., they may differ in syntax, but at their very core, they are alike. Much like humans, we differ in color, height, body size, etc., but at our very core, we're all alike, but they differ in terms of speed, like humans differ in intelligence.

So, I made a bubble sort implementation in Java, JavaScript, PHP, and Python. If you don't know the bubble sort algorithm yet and you want to know, then read the [pseudocode](https://gist.github.com/aprilmintacpineda/7800a989f1f494ee8d

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What

When using AWS AppSync with ElasticSearch, sometimes, the data on elastic search gets corrupted or gets missing, what you need to do to get it fixed is to update each items on all the table, which you don't wanna do manually.

This script will update each items on all dynamodb table in your AppSync by setting the updatedAt to the current timestamp.

THIS SCRIPT WILL UPDATE ALL ITEMS OF YOUR DYNAMODB IN YOUR APPSYNC APP

Usage

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What is this?

THIS SCRIPT WILL DELETE ALL ITEMS OF THE DYNAMODB TABLES OF YOUR APPSYNC APP.

How to use:

1. Copy-paste the script to your machine.
2. Run yarn add @aws-sdk/util-dynamodb aws-sd date-fnsk prompt-confirm.
3. Provide the correct values in the configuration section of the script.
4. Run the script via nodejs.

aprilmintacpineda

NodeJS require concept for local modules

The problem

As your NodeJS app grows bigger, the file structure tends to go 3 to even 5 layers deep. The problem now is as you require local modules you created, you'll have to write them in this way:

const myModule = require('../../../my/module');