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Dev Cookies

Passionate developer crafting code and stories for a tech-infused world. Join me on the journey of innovation and growth.

Location India Joined Joined on  Personal website https://www.topmate.io/devcookies github website
Low-Level Design (LLD) of a Heap (Priority Queue) in Java
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Low-Level Design (LLD) of a Heap (Priority Queue) in Java

#algorithms #computerscience #interview #java
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5 min read
Low-Level Design (LLD) of HashMap in Java — Build Your Own HashMap from Scratch
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Low-Level Design (LLD) of HashMap in Java — Build Your Own HashMap from Scratch

#algorithms #computerscience #interview #java
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6 min read
Parking Lot System Low-Level Design (LLD) in Java
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Parking Lot System Low-Level Design (LLD) in Java

#architecture #interview #java #systemdesign
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5 min read
Banking Ledger System Low-Level Design (LLD) in Java
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Banking Ledger System Low-Level Design (LLD) in Java

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5 min read
Task Scheduler Low-Level Design (LLD) in Java
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Task Scheduler Low-Level Design (LLD) in Java

#architecture #interview #java #systemdesign
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4 min read
LRU Cache LLD
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LRU Cache LLD

#algorithms #interview #java #systemdesign
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4 min read
Rate Limiter LLD Design
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Rate Limiter LLD Design

#algorithms #interview #softwareengineering #systemdesign
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3 min read
Logger System LLD (Java)
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Logger System LLD (Java)

#architecture #interview #java #systemdesign
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3 min read
Functional Programming in Java — Complete Guide for Modern Backend Engineers
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Functional Programming in Java — Complete Guide for Modern Backend Engineers

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7 min read
Unbounded Knapsack Pattern — Complete Interview Guide
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Unbounded Knapsack Pattern — Complete Interview Guide

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5 min read
Backtracking for Coding Interviews: Combination vs Permutation (with Top Problems)
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Backtracking for Coding Interviews: Combination vs Permutation (with Top Problems)

#algorithms #coding #interview #java
1
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3 min read
Building Modern Data Systems: Event-Driven Architecture, Messaging Queues, Batch Processing, ETL & ELT
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Building Modern Data Systems: Event-Driven Architecture, Messaging Queues, Batch Processing, ETL & ELT

#architecture #dataengineering #systemdesign
4
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11 min read
The Complete Guide to Archiving and Compression in Linux: `tar` & `zip`
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The Complete Guide to Archiving and Compression in Linux: `tar` & `zip`

#cli #linux #tutorial
2
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3 min read
The Ultimate Linux Command Guide for Developers: Master Your Terminal
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The Ultimate Linux Command Guide for Developers: Master Your Terminal

#tutorial #productivity #cli #linux
6
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4 min read
Calling REST Services in Spring Boot: Complete CRUD Operations With and Without Feign Client
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Calling REST Services in Spring Boot: Complete CRUD Operations With and Without Feign Client

#springboot #microservices #api #java
7
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19 min read
🔄 Understanding the Spring Boot Lifecycle
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🔄 Understanding the Spring Boot Lifecycle

#springboot #microservices #architecture #java
12
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2 min read
📦 Container Lifecycle in Kubernetes/Docker
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📦 Container Lifecycle in Kubernetes/Docker

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2 min read
🔄 Understanding Spring Boot Lifecycle Hooks: From Bean Creation to Application Ready
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🔄 Understanding Spring Boot Lifecycle Hooks: From Bean Creation to Application Ready

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3 min read
Designing Clean, Scalable Microservices: Understanding Class Types in Low-Level Design
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Designing Clean, Scalable Microservices: Understanding Class Types in Low-Level Design

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3 min read
Understanding the Law of Demeter in Object-Oriented Design
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Understanding the Law of Demeter in Object-Oriented Design

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2 min read
Understanding Java Interfaces: Beyond Default and Static Methods
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Understanding Java Interfaces: Beyond Default and Static Methods

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2 min read
Mastering Java Stream API: A Complete Guide to Functional Programming in Java
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Mastering Java Stream API: A Complete Guide to Functional Programming in Java

1
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9 min read
Building Highly Scalable, Stable, and Secure Microservices with Spring Cloud
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Building Highly Scalable, Stable, and Secure Microservices with Spring Cloud

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3 min read
Imperative vs. Reactive Programming: Choosing the Right Paradigm for Modern Java Microservices
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Imperative vs. Reactive Programming: Choosing the Right Paradigm for Modern Java Microservices

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2 min read
The Complete Guide to Serverless Computing: Focus on Logic, Not Infrastructure
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The Complete Guide to Serverless Computing: Focus on Logic, Not Infrastructure

#serverless #cloudcomputing #architecture #devops
1
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4 min read
Spring AI: Empowering Java Developers with Generative AI
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Spring AI: Empowering Java Developers with Generative AI

#springboot #java #microservices #ai
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6 min read
🔧 Mastering Maven Commands & Lifecycle: A Complete Guide
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🔧 Mastering Maven Commands & Lifecycle: A Complete Guide

1
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2 min read
Kubernetes Pre-Application Initialization: A Complete Guide to Running Tasks Before Your Main Container Starts
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Kubernetes Pre-Application Initialization: A Complete Guide to Running Tasks Before Your Main Container Starts

2
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8 min read
The Complete Guide to Modern Java Map Operations: From Beginner to Advanced
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The Complete Guide to Modern Java Map Operations: From Beginner to Advanced

#beginners #algorithms #tutorial #java
1
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10 min read
The Complete Remote Work Ecosystem: 100+ Job Boards, Emerging Platforms & Hidden Gems for 2025
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The Complete Remote Work Ecosystem: 100+ Job Boards, Emerging Platforms & Hidden Gems for 2025

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7 min read
The Ultimate Guide to 75+ Remote Job Boards in 2025: Your Complete Directory for Landing Remote Work
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The Ultimate Guide to 75+ Remote Job Boards in 2025: Your Complete Directory for Landing Remote Work

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5 min read
The Complete Developer's Guide to Package Management and Tool Installation
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The Complete Developer's Guide to Package Management and Tool Installation

1
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9 min read
🚀 Building & Running Multiple Services with Docker Compose
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🚀 Building & Running Multiple Services with Docker Compose

#docker #microservices #tutorial #devops
1
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3 min read
A Complete Guide to Mastering Linked-List Problems
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A Complete Guide to Mastering Linked-List Problems

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4 min read
The Ultimate DSA Patterns Guide for Top Tech Interviews
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The Ultimate DSA Patterns Guide for Top Tech Interviews

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23 min read
The Ultimate Guide to DSA Patterns for Top Tech Company Interviews
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The Ultimate Guide to DSA Patterns for Top Tech Company Interviews

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20 min read
Binary Search Patterns Series — Blog 5: Cheat Sheet & Edge Cases
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Binary Search Patterns Series — Blog 5: Cheat Sheet & Edge Cases

5
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3 min read
Binary Search Patterns Series — Blog 4: 2D Matrix & Advanced Variants
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Binary Search Patterns Series — Blog 4: 2D Matrix & Advanced Variants

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2 min read
Binary Search Patterns Series — Blog 3: Rotated & Special Arrays
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Binary Search Patterns Series — Blog 3: Rotated & Special Arrays

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2 min read
Binary Search Patterns Series — Blog 2: Monotonic Functions & Answer Search
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Binary Search Patterns Series — Blog 2: Monotonic Functions & Answer Search

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3 min read
Binary Search Patterns Series — Blog 1: Classic Binary Search & Variants
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Binary Search Patterns Series — Blog 1: Classic Binary Search & Variants

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3 min read
📝 Blog 10: DP Optimization Techniques 🚀
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📝 Blog 10: DP Optimization Techniques 🚀

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4 min read
📝 Blog 9: DP with Bitmasking (Advanced State Compression) 🎭
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📝 Blog 9: DP with Bitmasking (Advanced State Compression) 🎭

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3 min read
📝 Blog 8: DP on Trees & Graphs 🌳🔗
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📝 Blog 8: DP on Trees & Graphs 🌳🔗

1
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4 min read
📝 Blog 7: DP on Intervals 🧩
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📝 Blog 7: DP on Intervals 🧩

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3 min read
📝 Blog 6: DP on Subsequences (Arrays & Strings)
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📝 Blog 6: DP on Subsequences (Arrays & Strings)

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3 min read
📝 Blog 5: DP on Subsequences (Patterns in Arrays/Strings)
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📝 Blog 5: DP on Subsequences (Patterns in Arrays/Strings)

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4 min read
📖 Blog 4: Knapsack Pattern (Subset/Partition DP) 🎒
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📖 Blog 4: Knapsack Pattern (Subset/Partition DP) 🎒

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4 min read
📖 Blog 3: Mastering 2D Grid DP (Matrix Problems)
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📖 Blog 3: Mastering 2D Grid DP (Matrix Problems)

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5 min read
📝 Blog 2: 1D DP Patterns – Linear Problems
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📝 Blog 2: 1D DP Patterns – Linear Problems

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4 min read
🧩 Dynamic Programming (DP) Mastery Series — Roadmap
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🧩 Dynamic Programming (DP) Mastery Series — Roadmap

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1 min read
🚀 Blog 10: Advanced Graph Tricks & Real-World Applications
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🚀 Blog 10: Advanced Graph Tricks & Real-World Applications

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3 min read
⚡ Blog 9: Advanced Graph Patterns (Flow, Matching, Bipartite)
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⚡ Blog 9: Advanced Graph Patterns (Flow, Matching, Bipartite)

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3 min read
🔗 Blog 8: Strongly Connected Components (SCCs) & Bridges / Articulation Points
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🔗 Blog 8: Strongly Connected Components (SCCs) & Bridges / Articulation Points

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4 min read
🧩 Blog 7: Union-Find / Disjoint Set Pattern (DSU Mastery Guide)
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🧩 Blog 7: Union-Find / Disjoint Set Pattern (DSU Mastery Guide)

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3 min read
📘 Blog 6: Minimum Spanning Tree (MST) 🌉
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📘 Blog 6: Minimum Spanning Tree (MST) 🌉

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3 min read
🚦 Shortest Path Algorithms in Graphs
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🚦 Shortest Path Algorithms in Graphs

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4 min read
🏗️ Topological Sort & DAG Problems
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🏗️ Topological Sort & DAG Problems

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3 min read
📘 Blog 3: DFS Pattern (Path Exploration, Connectivity, Components) 🌐
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📘 Blog 3: DFS Pattern (Path Exploration, Connectivity, Components) 🌐

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4 min read
📘 Blog 2: BFS Pattern (Level Order, Shortest Path in Unweighted Graphs) 🌐
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📘 Blog 2: BFS Pattern (Level Order, Shortest Path in Unweighted Graphs) 🌐

1
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3 min read
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