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New steps component and improved accessibility on Hashnode's blog and docs product.

Nov 05, 2024·

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Nzcares

nzcares.hashnode.dev·Jul 14, 2025

Jul 14, 2025

How Hospitals Are Cutting OPD Overcrowding by 40% Using Queue Tech

Ever walked into a hospital’s Outpatient Department (OPD) and felt like you accidentally stepped into a train station during rush hour? That is the reality for many public and private hospitals; they are regularly dealing with long queues, irate pat...

How Hospitals Are Cutting OPD Overcrowding by 40% Using Queue Tech

Discuss·4 reads

Faiaz Khan

codelikeyoumeanit.hashnode.dev·Jul 13, 2025

Jul 13, 2025

Monotonic Stacks & Queues – The Sliding Window Buff

Ever written a nested loop, stared at your O(n²) time, and whispered “there has to be a better way”? There is. And it’s 🔥. Monotonic Stacks and Queues are those underdog tricks that seem obscure... until they make your entire codebase faster and pre...

Monotonic Stacks & Queues – The Sliding Window Buff

Discuss·1 read

Kartik Mehta

writer.mrmehta.in·Jul 12, 2025

Jul 12, 2025

No Bottlenecks. Just SQS.

When building modern applications, we often encounter a dilemma: Should we process tasks immediately within the API call? Or offload them and return quickly? As your application scales, tasks like sending emails, processing payments, resizing ima...

No Bottlenecks. Just SQS.

Discuss·11 likes·18 reads

Aishwarya S

aishwaryas.hashnode.dev·Jul 11, 2025

Jul 11, 2025

Scheduling Messages in RabbitMQ

Scheduling in RabbitMQ can be done in two ways, Using TTL and Dead Letter Exchange Using Delay Exchange 1. Using TTL and Dead Letter Exchange: Time-To-Live (TTL) is a parameter that specifies how long a message can remain in a queue. If the mess...

Scheduling Messages in RabbitMQ

Discuss·3 reads

Anni Huang

huanganni.hashnode.dev·Jul 10, 2025

Jul 10, 2025

LeetCode 232 Implement Queue using Stacks - by using two stacks (Easy, Java)

232. Implement Queue using Stacks To implement a queue (FIFO) using two stacks, we need to simulate the first-in-first-out behavior. The key idea is to use one stack (stack1) for pushing elements and another stack (stack2) for popping/peeking. When w...

LeetCode 232 Implement Queue using Stacks - by using two stacks (Easy, Java)

Discuss·9 reads

Anni Huang

huanganni.hashnode.dev·Jul 10, 2025

Jul 10, 2025

LeetCode 225 Implement Stack using Queues - Two Solutions (Easy, Java, O(n))

LeetCode 225. Implement Stack using Queues This post compares two solutions for LeetCode problem 225, which involves implementing a stack using queues. The first solution uses a single queue with O(n) push and O(1) pop/top operations, while the secon...

LeetCode 225 Implement Stack using Queues - Two Solutions (Easy, Java, O(n))

Discuss·4 reads

SHAM SUNDAR K

shamsundar.hashnode.dev·Jun 25, 2025

Jun 25, 2025

Mastering Java Collections: Beyond ArrayList and HashMap

As a software developer, throughout my journey of building projects, fixing bugs, and preparing for placements, I learned something simple yet powerful: choosing the right Java Collection makes your code cleaner, faster, and easier to scale. Most of ...

Mastering Java Collections: Beyond ArrayList and HashMap

Discuss·6 reads

Lim Woojae

jaylog.hashnode.dev·May 11, 2025

May 11, 2025

[CS Fundamentals] DFS and BFS

In this article, I will introduce the basic concept of Depth-First Search(DFS) and Breadth-First Search(BFS). Both focuses searching, but the difference is the way of doing it. DFS To understand DFS, you need to know stack and recursive function. I ...

[CS Fundamentals] DFS and BFS

Discuss·3 reads

CS fundamentals

Nachiket

codewithnachiket.hashnode.dev·May 09, 2025

May 09, 2025

Stacks and Queues

Introduction As Android developers, our ability to manipulate data efficiently often determines the performance and scalability of our applications. While modern development frameworks provide numerous abstractions, a profound understanding of fundam...

Discuss·10 likes·4 reads

Milan Jovanović

Milan Jovanović

milanjovanovic.hashnode.dev·May 02, 2025

May 02, 2025

Event-Driven Architecture in .NET with RabbitMQ

Event-driven architecture (EDA) can make applications more flexible and reliable. Instead of one part of the system calling another directly, we let events flow through a message broker. In this quick guide, I'll show you how to set up a simple event...

Event-Driven Architecture in .NET with RabbitMQ

Discuss·3 reads

software architecture