supriya-premkumar

Install Docker

https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-16-04

Test Docker Version

docker --version

List CLI commands

docker container --help

Check docker installations

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

Babatunde13

from flask import Flask, jsonify, request
from flask_sqlalchemy import SQLAlchemy
import uuid

app = Flask(__name__)
db = SQLAlchemy(app)

app.config['SECRET_KEY']='secret'
app.config['SQLALCHEMY_DATABASE_URI']='sqlite:///app.db'

Olanetsoft

Series 1: Mara Blockchain Masterclass - Nigeria

This workshop is targeted at developers who are transitioning from Web2 to Web3 or have just recently gotten into Web3 and are looking to have a well-rounded foundation.

This first workshop is Series 1 in the three-part series that aims to introduce you to the blockchain and how to build on the blockchain.

Steps to set up a project, build and deploy a smart contract.

Step 1

wfng92

import logging
import os
import grpc
from protos import hello_pb2, hello_pb2_grpc

def run():
    with grpc.insecure_channel('localhost:50051') as channel:
        stub = hello_pb2_grpc.GreeterStub(channel)
        response = stub.SayHello(hello_pb2.HelloRequest(name='John Doe', age=30))
        print("Greeter client received: " + response.message)

wfng92

def get_filepath(filename, extension):
    return f'{filename}{extension}'


class Greeter(hello_pb2_grpc.GreeterServicer):
    ....

    def UploadFile(self, request_iterator, context):
        data = bytearray()
        filepath = 'dummy'

wfng92

from concurrent import futures
import logging
import os
import grpc
from protos import hello_pb2, hello_pb2_grpc


def get_filepath(filename, extension):
    return f'{filename}{extension}'

wfng92

import logging
import os
import grpc
from protos import hello_pb2, hello_pb2_grpc

def get_filepath(filename, extension):
    return f'{filename}{extension}'


def read_iterfile(filepath, chunk_size=1024):

Xavier577

Code snippet

import { createServer } from "http";
import crypto from "crypto";

const PORT = 8001;

// this is from the web-socket specification and not something that is generated
const WEBSOCKET_MAGIC_STRING_KEY = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";