mberberoglu

# System Design Challenge

## 📋 What to Expect
**Duration:** 60 minutes  
**Format:** Collaborative system design discussion  
**Challenge:** Design a system to handle 1M+ transactions per day

**💡 AI Assistance Welcome:** Feel free to use AI tools during our discussion.

## ⚡ The Challenge

mberberoglu

sudo service mongodb stop
 
// /etc/init/mongo.conf u açıp --configsvr ekleyin
sudo vim /etc/init/mongodb.conf
 
"exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --config /etc/mongodb.conf;"
 
//Üstteki satır ile değistirin
"exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --configsvr --config /etc/mongodb.conf;"
 

mberberoglu

-4.8000001907349#0
43.400001525879#1
43.400001525879#2
43.400001525879#3
43.400001525879#4
-7.5999999046326#5
-7.5999999046326#6
-7.8000001907349#7
-7.8000001907349#8
-7.5999999046326#9

mberberoglu

<?xml version="1.0" encoding="UTF-8" ?>
<dataConfig>
    <dataSource name="DataImporter" type="MongoDataSource" host="host"  database="database" port="port" username="username" password="password" />
    <document name="Document">
        <entity name="Data"
                processor="MongoEntityProcessor"
                query="{updatedAt: {'$gte' : ${dataimporter.request.time}}}, {}"
                collection="Data"
                datasource="DataImporter"
                transformer="MongoMapperTransformer" >

mberberoglu

mongod -port 27001 -dbpath /var/mongodb/rep1 -replSet replicationName
mongod -port 27002 -dbpath /var/mongodb/rep2 -replSet replicationName
mongod -port 27003 -dbpath /var/mongodb/rep3 -replSet replicationName

mberberoglu

package com.mustafab;

import com.mongodb.*;
import twitter4j.*;
import twitter4j.conf.ConfigurationBuilder;

import java.io.*;
import java.net.UnknownHostException;
import java.util.Properties;

mberberoglu

<?php
        $category = 8;
        $data = array(
            164, 150, 132, 144, 125, 149, 145, 146,
            158, 140, 147, 136, 148, 152, 144, 168,
            126, 138, 176, 163, 119, 154, 165, 146,
            173, 142, 147, 135, 153, 140, 135, 161,
            145, 135, 142, 150, 156, 145, 128, 157
        );
        $min = min($data);

mberberoglu

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.abhi.barcode.frag.libv2.BarcodeFragment;
import com.abhi.barcode.frag.libv2.IScanResultHandler;
import com.abhi.barcode.frag.libv2.ScanResult;

mberberoglu

function minimax(node, depth, maximizingPlayer)
    if depth = 0 or node is a terminal node
        return the heuristic value of node
    if maximizingPlayer
        bestValue := -∞
        for each child of node
            val := minimax(child, depth - 1, FALSE))
            bestValue := max(bestValue, val);
        return bestValue
    else

mberberoglu

//Main Container
<android.support.v4.view.ViewPager
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />