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Md Shadekur Rahman
Md Shadekur Rahman

200 Followers

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Published in

AWS in Plain English

·Pinned

Create Single Eventbridge Rule for Uploads on Multiple S3 Buckets

With the purpose of triggering a lambda to store metadata in DynamoDB — In my current work, I had to find a way to trigger a single lambda based on the file uploads on two separate buckets. The purpose of triggering the lambda is to update the DynamoDB table with file/object metadata. One obvious solution is to create two lambda functions where each…

AWS

2 min read

Create Single Eventbridge Rule for Uploads on Multiple S3 Buckets
Create Single Eventbridge Rule for Uploads on Multiple S3 Buckets
AWS

2 min read


Published in

AWS in Plain English

·Pinned

Why did I enable Kinesis Data Stream on my DynamoDB table

extended fan-out architecture with DynamoDB being the data producer — In my current project as a lot of business needs were unfolding that would require listening to various types of changes/updates on DynamoDB table (single table), I couldn’t handle all of those using just a single DynamoDB stream that comes with the table. DynamoDB stream can connect to maximum two…

AWS

4 min read

Why did I enable Kinesis Data Stream on my DynamoDB table
Why did I enable Kinesis Data Stream on my DynamoDB table
AWS

4 min read


Published in

Nerd For Tech

·Pinned

Two bash scripting problems for a Cloud dev hiring test

Recently I applied for a Cloud Engineering role at a company. As a first step, they invited me to a Hackerrank cloud dev test. In the test, there were one coding problem (specific to Python) and two bash scripting problems. …

Bash

4 min read

Two bash scripting problems for a Cloud dev hiring test
Two bash scripting problems for a Cloud dev hiring test
Bash

4 min read


Published in

AWS in Plain English

·Pinned

CloudWatch Log Records— Send Critical Ones to a Slack Channel

Solve it by Lambda attached to an SNS topic — You have a custom logger in place for a lambda function in your AWS account and this logger writes JSON records to CloudWatch through that lambda log group. Now out of all these log records being dumped in the log group, you want to send all logs that contain the…

AWS

3 min read

CloudWatch Log Records— Send Critical Ones to a Slack Channel
CloudWatch Log Records— Send Critical Ones to a Slack Channel
AWS

3 min read


Published in

coding interview preparation

·Sep 24

Coding problem: maximum subarray product

I was given this in one big-tech online coding assessment — Recently I applied to one of the big-tech companies software engineering role. They came back to me with an online assessment in hacker rank. Two coding problems were given in that assignment. In this blog post I will share one of them. Problem description One online education platform (named OEP)…

Online Coding Assessment

3 min read

Coding problem: maximum subarray product
Coding problem: maximum subarray product
Online Coding Assessment

3 min read


Published in

coding interview preparation

·Sep 7

Coding problem: Anagram difference

I was given this problem in an online coding assessment — Problem description An anagram is a word whose characters can be rearranged to create another word. Given two strings, determine the minimum number of characters in either string that must be modified to make the two strings anagrams. …

Python

2 min read

Coding problem: Anagram difference
Coding problem: Anagram difference
Python

2 min read


Published in

coding interview preparation

·Jul 24

How chatGPT helped me prepare questions towards interviewer?

leverage AI tools to come prepared for your upcoming interview — One of the concerns that I always have before the first round of either technical or introductory interview is what is the list of questions I should ask to the interviewer. Usually I have one or two questions prepared to ask to the interviewer. …

ChatGPT

3 min read

How chatGPT helped me prepare questions towards interviewer?
How chatGPT helped me prepare questions towards interviewer?
ChatGPT

3 min read


Published in

coding interview preparation

·Jul 5

Coding problem on digit anagram

CodeSignal python coding test from a recruiting agency — This problem appeared in an online coding test hosted in CodeSignal. I was talking to a recruiting agency. To measure the competency of my python skill, they gave me this coding test with three coding problems. Out of three, this one was most interest. …

Codesignal

3 min read

Coding problem on digit anagram
Coding problem on digit anagram
Codesignal

3 min read


Published in

AWS in Plain English

·Apr 22

How to Prevent App Users to have reserved usernames

AppSync vtl and DynamoDB Case study — In our mobile application development work, we wanted to ensure each user had a unique username. However, we encountered some users who selected usernames that we deemed unsuitable, such as test, tests, testing, usernames containing our company’s name, and so on. To prevent this, we decided to block certain usernames…

AWS

3 min read

How to Prevent App Users to have reserved usernames
How to Prevent App Users to have reserved usernames
AWS

3 min read


Published in

coding interview preparation

·Mar 12

Leetcode: Split the Array to Make Coprime Products

Leetcode hard (it’s all about prime factors though) — Problem Description You are given a 0-indexed integer array nums of length n. A split at an index i where 0 ≤ i ≤ n-2 is called valid if the product of the first i + 1 elements and the product of the remaining elements are coprime. For example, if…

Leetcode

3 min read

Leetcode: Split the Array to Make Coprime Products
Leetcode: Split the Array to Make Coprime Products
Leetcode

3 min read

Md Shadekur Rahman

Md Shadekur Rahman

200 Followers

Cloud Software Engineer. Editor of https://medium.com/coding-interview-preparation publication

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