Golam Kibria MdGolam-Kibria

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Full Stack Software Engineer(Java) at BRAC Bank Limited under BRAC IT Services Limited (biTS).

MdGolam-Kibria / ReqResLoggingAspect.java

Created October 6, 2024 08:20

Request Response Details log globally using AOP including request served time calculation.

	package com.bbl.corpnet.api.aspect;

	import com.fasterxml.jackson.databind.ObjectMapper;
	import com.fasterxml.jackson.databind.SerializationFeature;
	import org.aspectj.lang.JoinPoint;
	import org.aspectj.lang.ProceedingJoinPoint;
	import org.aspectj.lang.annotation.AfterReturning;
	import org.aspectj.lang.annotation.Around;
	import org.aspectj.lang.annotation.Aspect;
	import org.aspectj.lang.annotation.Pointcut;

MdGolam-Kibria / RedisVsDatabase

Last active September 5, 2024 05:36

Redis Vs Database

	----------------------------------------------------------------------Redis Over Database--------------------------------------------------------------------------------------------

	The performance difference between a DB call (e.g., SQL database) and a Redis call (in-memory data store) can be significant due to the underlying architecture of each.
	Key Differences in Speed:

	Database Call (DB Call):
	Nature: Most relational databases (like MySQL, PostgreSQL) store data on disk, though they may use some in-memory caching.
	Latency: Typically, accessing data from disk is slower because of I/O overhead, indexing, and query execution time.
	Average Response Time:
	Milliseconds to seconds range, depending on the complexity of the query, indexing, and network latency.

MdGolam-Kibria / oracleTriggerExample.sql

Created August 22, 2024 08:57

Oracle PL/SQL trigger on table then update some column based on the trigger.


	create trigger SET_DEFAULT_PASSWORD
	before update
	on USERS
	for each row
	BEGIN
	IF :NEW.PASSWORD IS NOT NULL AND :NEW.PASSWORD <> :OLD.PASSWORD THEN
	:NEW.PASSWORD := '$2a$10$fYcxMH5SzN.DtrF.t3IpgeG4JcYuBPkUZA06dqvjVyI23MVa46h3i';
	:NEW.NUMBER_OF_BAD_LOGIN:=0;
	--Default Password: Abc@12345

MdGolam-Kibria / pushDataToQueue.java

Created August 22, 2024 08:55

Push data to Rabbit MQ queue using java with publishing guarantee



	public void produceBatchesDataToQueue(List<String> tranIDs, Integer eventId, String actionPoint) throws IOException, TimeoutException {
	for (int i = 0; i < tranIDs.size(); i++) {
	LOGGER_I.info("Going to bind actual request data");
	JBCollectionPolicyModelRequest request = buildAarongApiCallbackModel(tranIDs.get(i), actionPoint);
	request.setEventId(eventId);
	String message = gson.toJson(request);
	LOGGER_I.info("Successfully bind data and prepare message :{}", message);

MdGolam-Kibria / secondHighestSalary.java

Last active August 22, 2024 08:58

get second highest salary



	public static void main(String[] args) {
	int[] salaries = {100, 200, 500, 50, 30};
	int secondHighestSalary = Arrays.stream(salaries)
	.distinct() // Remove duplicates if any
	.sorted()//30,50,100,200,500
	.skip(salaries.length - 2) // Skip all without last 2 item = [200,500]
	.findFirst()//200
	.orElseThrow(null); // Throw an exception if no element is found

MdGolam-Kibria / 3rdHighAmount.sql

Created August 22, 2024 08:51

get 3rd high salary using ORACLE query



	SELECT n.TOTAL_BBL_AMT FROM (SELECT TOTAL_BBL_AMT
	FROM CORP_FILE_UPLOAD_INFO
	order by TOTAL_BBL_AMT DESC) n offset 3 rows fetch next 1 rows only;

MdGolam-Kibria / RestClientApiCallExample.java

Created August 22, 2024 08:23

Api call using RestClient using java 17

	public ResponseEntity<?> login(LoginRecord loginRecord) {
	try {
	RemoteRequest<LoginRecord> remoteRequest = new RemoteRequest<>();
	remoteRequest.setRequestId(String.valueOf(System.nanoTime()));
	remoteRequest.setChannelId("TERP");
	remoteRequest.setRequestTimestamp(String.valueOf(System.currentTimeMillis()));
	remoteRequest.setData(loginRecord);
	log.info("""
	[LOGIN] Going to call login api using
	URL : {}

MdGolam-Kibria / addCodeInHtmlFromGithubGist.html

Last active August 22, 2024 08:59

Add code from github gist.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Embed Gist Example</title>
	</head>
	<body>

	<h1>Example of Embedding a Gist</h1>

MdGolam-Kibria / NumberTOBanglaTranslation.java

Created August 22, 2024 06:48

Convert Number to Bangla Taka.


	import java.text.DecimalFormat;
	import java.util.Scanner;

	public class NumberToBanglaTaka {
	public static final String[] units = new String[]{"", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"};
	public static final String[] tens = new String[]{"", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety"};

	public NumberToBanglaTaka() {
	}

MdGolam-Kibria / RestTemplateExceptionHandleExample.java

Created August 22, 2024 06:46

Handle api call exceptions using RestTemplate.

	private BaseResponseBody<?> handleExceptions(Exception e) {
	try {
	if (e instanceof HttpServerErrorException) {
	if (((HttpServerErrorException) e).getStatusCode() == HttpStatus.INTERNAL_SERVER_ERROR) {
	String responseBody500 = ((HttpServerErrorException) e).getResponseBodyAsString();
	logger.error("[NSU] Nsu server return INTERNAL SERVER ERROR and the response body is : {}", responseBody500);
	return ResponseBuilder.getFailureResponse(HttpStatus.SERVICE_UNAVAILABLE,
	"NSU System did not respond as per our expectation. " +
	"You can try again or you can proceed to collect using 'North South University (Offline)' merchant.", e);
	}