namhyun-gu

lang: ko
notification:
  mail:
    smtpService: Naver
    smtpHost: smpt.naver.com
    smtpPort: 587
    senderMail: mnhan0403@naver.com
    receiverMail: mnhan0403@gmail.com
targets:
  - jobhope/TechnicalNote

namhyun-gu

import java.util.Scanner;

public class Main2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int count = scanner.nextInt();
        for (int index = 0; index < count; index++) {
            System.out.println("Hello");
        }
    }

namhyun-gu

// Hashed Sharding 방식을 이용하여 테스트합니다. 다른 방식을 이용해도 무방합니다.
sh.enableSharding("sharding-test")
use sharding-test
db.items.createIndex({"index": "hashed"})
sh.shardCollection("sharding-test.items", {"index": "hashed"})
for (var n=1; n<=100000; n++) db.items.insert({index: n, name: "test"})
db.items.count() // 10만개의 데이터가 정상적으로 작성되었는지 확인합니다

// 각 Primary Shard 서버에 접속하여 아래의 명령어를 실행합니다.
use sharding-test

namhyun-gu

sharding:
  configDB: "configRepl/<server1 hostname or ip>:<port>,<server2 hostname or ip>:<port>,<server3 hostname or ip>:<port>"
net:
  bindIpAll: true
  port: 30000 // 없을 경우 27017이 기본 값

namhyun-gu

rs.initiate( {
   _id : "configRepl",
   members: [
      { _id: 0, host: "<server1 hostname>:<port>" },
      { _id: 1, host: "<server2 hostname>:<port>" },
      { _id: 2, host: "<server3 hostname>:<port>" }
   ]
})

namhyun-gu

sharding:
  clusterRole: configsvr
replication:
  replSetName: “configRepl”
net:
  bindIpAll: true
  port: 20000 // 없을경우 27019이 기본 값
storage:
  dbPath: "/mongodb/config"

namhyun-gu

process.cwd() // Call this line. Returned current path to string.

namhyun-gu

// Javascript is not support enum type.
const State = {
  SUCCESS: 1,
  UNKNOWN: 2,
  FAILED: 4
};

console.log(State.SUCCESS); // prints 1.
console.log(State.UNKNOWN); // prints 2.
console.log(State.FAILED); // prints 4.

namhyun-gu

// in node application.
const pkg = require('./package.json'); // Declare this line.

pkg.version // package version
pkg.name // pacakge name
pkg.author // package author

// ... etc

namhyun-gu

const regex = /url\((.*?)\) format\((\'|\")(.*?)(\'|\")\)/g;
const str = `CSS Input`;
let m;

while ((m = regex.exec(str)) !== null) {
    // This is necessary to avoid infinite loops with zero-width matches
    if (m.index === regex.lastIndex) {
        regex.lastIndex++;
    }