jbutko

const obj = {
    ...condition && { prop: value },
};

// via From https://dev.to/jfet97/the-shortest-way-to-conditional-insert-properties-into-an-object-literal-4ag7

jbutko

Setup storybook

https://sandstorm.github.io/typescript-react-app-kickstart-guide/guide/kickstart/storybook

jbutko

{                                                                                           
        "apps" : [{                                                                         
                "name"        : "prerender.io",                                             
                "script"      : "./server.js",                                              
                "watch"       : false,                                                      
                "node_args"   : "--max_old_space_size=12288",                               
                "NODE_ENV"    :"prod",                                                      
                "env": {                                                                    
                        "PORT": 12345                                                        
                },                                                                          

jbutko

tuts and config examples:

https://blog.karmacomputing.co.uk/how-to-create-mongodb-replica-set-with-authentication-ubuntu-16-04/ https://www.digitalocean.com/community/tutorials/how-to-implement-replication-sets-in-mongodb-on-an-ubuntu-vps http://blog.brunobonacci.com/2013/02/22/how-to-convert-a-standalone-mongodb-into-a-replica-set/ https://docs.pritunl.com/docs/securing-mongodb https://medium.com/@rossbulat/deploy-a-3-node-mongodb-3-6-replica-set-with-x-509-authentication-self-signed-certificates-d539fda94db4 https://medium.com/ninjaconcept/how-to-quickly-setup-mongodb-on-digitalocean-3d9791a7aaa4 https://gist.github.com/davisford/bb37079900888c44d2bbcb2c52a5d6e8

jbutko

In a mongo shell, run rs.status() to ensure your replica set is running as expected.

In a mongo shell connected to the mongod instance running on mdb2.example.net, freeze mdb2.example.net so that it does not attempt to become primary for 120 seconds.

rs.freeze(120)

In a mongo shell connected the mongod running on mdb0.example.net, step down this instance that the mongod is not eligible to become primary for 120 seconds:

rs.stepDown(120)

jbutko

Enable private networking

• during new droplet creating or
• from dashboard in Networking menu

Manually enable private network on existing droplet via tutorial:

https://www.digitalocean.com/docs/networking/private-networking/how-to/enable/#ubuntu-16-04

Test if private network works

ping 1.2.3.4

jbutko

made a backup first though JIC, sudo cp /etc/letsencrypt/ /etc/letsencrypt.backup -r

Delete the ‘no longer needed domains’ in the three folders…

rm -rf /etc/letsencrypt/live/${DOMAIN}
rm -rf /etc/letsencrypt/renewal/${DOMAIN}.conf
rm -rf /etc/letsencrypt/archive/${DOMAIN}

jbutko

list collection stats and check indexSizes

mongo
use collectionName
db.collectionName.stats()

copy indexSizes and assign it to variable (in devtools)

get sizes and total sizes:

jbutko

1. configure nginx config (or virtual host config) which is serving your local react (or any js framework) app via this official prerender.io nginx config:

https://gist.github.com/thoop/8165802

2. install local prerender server following this tutorial

https://prerender.io/documentation/test-it

Note: if the server won't run because of missing chrome installed, then install it. On ubuntu follow this instructions: https://www.ubuntuupdates.org/ppa/google_chrome?dist=stable -> the final command is sudo apt-get install google-chrome-stable

3. start your local prerender.io server:

jbutko

import { createLogger, format, transports } from 'winston';
import { LOGGER_LEVEL, LOGGER_LEVELS, DEVELOPMENT_MODE } from './config';

const formatTemplate = (message, ...data) => `(${message}) ${data}`;

export default class Logger {
  constructor() {
    this.logger = createLogger({
      format: format.simple(),
      level: LOGGER_LEVEL,