melvinodsa

Redis

• Spend some time learning Redis
• Create a small set of applications to discover different use case of Redis.
  • A dummy application to mock data for e-commerce platform. Through this application, we can feed in data. Call it a data publisher. It will push platform metrics data into Redis cache. Then will pass the message through Redis about the data changes
  • Another application that uses Redis cache to store and keeps a real-time track of the platform metrics(call it data subscriber). This web application will retrieve the platform metrics information on-demand from Redis cache. It will use web sockets for active connection with its client. It subscribes to the data changes published by the data publisher. If data change, ti will push the new metric information to the client.

Features to be covered

• Redis Overview
• Redis key-value cache store
• Master/slave replication in Redis

melvinodsa

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"strings"
)

func main() {

melvinodsa

const iNeverFail = insurance({
    foo: 'bar',
    baz: {
        qux: 10,
        name: 'yoyo'
    },
});

iNeverFail.asd //ƒ anonymous()
iNeverFail.asd.name // "Undefined"

melvinodsa

function insurance(obj) {
    return new Proxy(obj, {
        get(target, key) {
            const accessedProperty = Reflect.get(target, key);

            if (typeof accessedProperty === 'object') {
                return insurance(accessedProperty);
            } else {
                return accessedProperty == undefined ?
                Undefined:

melvinodsa

var handler = {
    get: function(obj, prop) {
        return prop in obj ?
            obj[prop] :
            37;
    }
};

var p = new Proxy({}, handler);
p.a = 1;

melvinodsa

const Undefined = new Proxy(function() {}, {
    get(target, key, receiver) {
        if (key === 'name') {
            return 'Undefined';
        }

        return Undefined;
    },
    apply() {
        return Undefined;

melvinodsa

set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
" alternatively, pass a path where Vundle should install plugins
"call vundle#begin('~/some/path/here')

" let Vundle manage Vundle, required

melvinodsa

import { Injectable } from '@angular/core';

/**
 * ConfigService has the configuration utilities required for the application
 */
@Injectable({
  providedIn: 'root'
})
export class ConfigService {
  /**

melvinodsa

@charset "UTF-8";.bootstrap-switch .bootstrap-switch-container:focus,.bootstrap-switch:focus,.compose-container .ta-text.ta-editor div:focus{outline:0}.lists-widget ol.blur,.lists-widget ol.blur ol{counter-reset:section}.alert{color:#fff;font-size:13px;font-weight:300}.alert .alert-link,.alert strong,.chartist h5{font-weight:400}.alert .close{margin-top:-3px}.alert .control-alert{padding-top:10px}.alert .control-alert button{margin-right:10px}.closeable button{color:#cbcbcb}.bg-success{background-color:rgba(144,185,0,.85);color:#fff}.bg-success a{color:#c54949}.bg-success a:hover{color:#e85656}.bg-info{background-color:rgba(45,172,209,.85);color:#fff}.bg-info a{color:#e9cd60}.bg-info a:hover{color:#dfb81c}.bg-warning{background-color:rgba(223,184,28,.85);color:#fff}.bg-warning a{color:#c54949}.bg-warning a:hover{color:#e85656}.bg-danger{background-color:rgba(232,86,86,.85);color:#fff}.bg-danger a{color:#e9cd60}.bg-danger a:hover{color:#dfb81c}.basic-btns{padding-top:8px;margin-bottom:-8px}.basic-btns h5{line-

melvinodsa

Tic tac

A Pen by Melvin Davis on CodePen.

License.