bradtraversy

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

bradtraversy

MongoDB Cheat Sheet

Show All Databases

show dbs

Show Current Database

bradtraversy

Docker Commands, Help & Tips

Show commands & management commands

$ docker

Docker version info

bradtraversy

SSH Cheat Sheet

This sheet goes along with this SSH YouTube tutorial

Login via SSH with password (LOCAL SERVER)

$ ssh brad@192.168.1.29

Create folder, file, install Apache (Just messing around)

$ mkdir test

$ cd test

pydevops

• 0.1. References
• 0.2. Other cheatsheets
• 0.3. Manage multiple gcloud config configurations
  • 0.3.1. Switch gcloud context with gcloud config
• 0.4. Credentials
• 0.5. info
• 0.6. projects
• 0.7. zones & regions
• 0.8. Organization
• 0.9. billing

so0k

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

sharmaeklavya2

Competitive Programming Syllabus

Geometry

• Graham Scan algorithm for Convex Hull O(n * log(n))
• Online construction of 3-D convex hull in O(n^2)
• Bentley Ottmann algorithm to list all intersection points of n line segments in O((n + I) * logn)
  • Suggested Reading - http://softsurfer.com/Archive/algorithm_0108/algorithm_0108.htm
• Rotating Calipers Technique
  • Suggested Reading - http://cgm.cs.mcgill.ca/~orm/rotcal.html

• Problems - Refer the article for a list of problems which can be solved using Rotating Calipers technique.

aponxi

SQL to MongoDB Mapping Chart

SQL to MongoDB Mapping Chart¶

In addition to the charts that follow, you might want to consider the Frequently Asked Questions section for a selection of common questions about MongoDB.

Executables¶

The following table presents the MySQL/Oracle executables and the corresponding MongoDB executables.

sebleier

i
me
my
myself
we
our
ours
ourselves
you
your