krebernisak

System design cheat sheet

It can be used for interviews or assessments.

1. Understand problem and scope:

• Recognize stakeholders and prioritize them. Create RACI matrix
• Understand business drivers of the project
• Recognize end-users of the project and understand how they will use that system
• Check functional requirements
• Define external dependencies
• Suggest additional features
• Remove items that interviewer considers out of scope

krebernisak

Keybase proof

I hereby claim:

• I am krebernisak on github.
• I am krebernisak (https://keybase.io/krebernisak) on keybase.
• I have a public key ASDRGM-oIfTk6c3fZu7r8r3yiQjEcnItSd4ebc5M1_43Ego

To claim this, I am signing this object:

krebernisak

// es connection
class Client {
    Call create(Query q);
}

// immutable call object created for specific client an query
class Call {
    Result execute();
    ScrollableCall toScrollable(long ttl); // this call makes a network request to get the first scrollable token

krebernisak

package com.firebase.client;

import com.firebase.client.AuthData;
import com.firebase.client.ChildEventListener;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.Query;
import com.firebase.client.ValueEventListener;
import com.firebase.client.core.view.Event;

krebernisak

{ chart: { backgroundColor: 'transparent' },
  credits: { enabled: false },
  title: { style: { color: '#fff' }, text: 'Content Import SE' },
  xAxis: [ { type: 'datetime', tickInterval: 1209600000 } ],
  yAxis: 
   [ { title: { text: 'Time' }, min: 0 },
     { gridLineWidth: 0,
       title: { text: 'Total', style: { color: '#72919A' } },
       labels: { format: '{value}%', style: { color: '#72919A' } },
       min: 0,

krebernisak

#!/usr/bin/env python

import sys

# Get the total number of args passed to the demo.py
total = len(sys.argv)

# Get the arguments list
cmdargs = str(sys.argv)

krebernisak

with open(fname) as f:
    content = f.readlines()

krebernisak

function youtube_parser(url) {
    var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
    var match = url.match(regExp);
    if (match && match[7].length === 11) {
        return match[7];
    } else {
        alert("Url incorrecta");
    }
}

krebernisak

aapt dump badging <my_apk.apk>

krebernisak

git daemon --reuseaddr --base-path=. --export-all --verbose
git clone git://[ip_addr]/ dir