devarajchidambaram

Common Node.js deployment problems
Problems occurring in Node.js application deployments can have a range of symptoms, but can generally be categorized into the following:

Uncaught exception or error event in JavaScript code
Excessive memory usage, which may result in an out-of-memory error
Unresponsive application, possibly looping or hanging
Poor performance
Crash or abort in native code
Unexpected application behavior or functional issue

devarajchidambaram

import React from 'react';
import logo from './logo.svg';
import './App.css';
import Car1 from './Car'

// function App() {
//   return (
//     <div className="App">
//       <h1>Helloworld</h1>
//     </div>

devarajchidambaram

apiVersion: apps/v1
kind: Deployment
metadata:
  name: kubernetes-tutorial-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: kubernetes-tutorial-deployment
  template:

devarajchidambaram

const els = require('event-loop-stats')

console.log(els.sense())

const end = Date.now() + 50

setTimeout(() => {
  console.log(els.sense())
}, 100)

devarajchidambaram

const grpc = require('grpc')
const PROTO_PATH = './notes.proto'
const NoteService = grpc.load(PROTO_PATH).NoteService
const client = new NoteService('localhost:50051',
    grpc.credentials.createInsecure())

    console.log('client', client)
    module.exports = client

    client.list({}, (error, notes) => {

devarajchidambaram

const genericPool = require("generic-pool");
const DbDriver = require("mysql");
 
/**
 * Step 1 - Create pool using a factory object
 */
const factory = {
  create: function() {
    return DbDriver.createConnection({
        host: '192.168.8.221',

devarajchidambaram

/**
 * Three Sum
 *
 * Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique
 * triplets in the array which gives the sum of zero.
 *
 * Note:
 *
 * The solution set must not contain duplicate triplets.
 *

devarajchidambaram

var cassandra = require('cassandra-driver');
var PlainTextAuthProvider = cassandra.auth.PlainTextAuthProvider;


var client = new cassandra.Client({
    contactPoints: ["50.112.59.244"],
    authProvider: new PlainTextAuthProvider('iccassandra', '636fd7882101b8387d4fc43b1ea499ec'),
    localDataCenter: 'AWS_VPC_US_WEST_2',
    keyspace: 'keyspace'
});

devarajchidambaram

//Refferd  https://medium.com/codingthesmartway-com-blog/creating-a-graphql-server-with-node-js-and-express-f6dddc5320e1

var express = require('express');
var express_graphql = require('express-graphql');
var { buildSchema } = require('graphql');
// GraphQL schema
var schema = buildSchema(`
    type Query {
        course(id: Int!): Course
        courses(topic: String): [Course]

devarajchidambaram

var Knex = require('knex')
var knex = Knex({
    client: 'mysql',
    connection: {
        host: '192.168.8.221',
        user: 'user_name',
        password: 'some_pass',
        database: 'vehicle'
    }
});