DEVANSHU PATIL - DEV Community

DEVANSHU PATIL

Oct 11

JavaScript Prototypal Inheritance vs ES6 Classes: What Actually Happens Under the Hood

#javascript #webdev #programming #computerscience

3 min read

DEVANSHU PATIL

Oct 11

Building High-Performance APIs with FastAPI: Pydantic Validation and Dependency Injection

#python #fastapi #backend #api

3 min read

DEVANSHU PATIL

Oct 10

Python Type Hints and Static Type Checking with Mypy in Production

#python #cleancode #development #softwareengineering

3 min read

DEVANSHU PATIL

Oct 10

Python Decorators from First Principles: Function Closures to Parametric Class Decorators

#python #programming #cleancode #development

3 min read

DEVANSHU PATIL

Oct 10

Python Generators and Iterators: Memory-Efficient Processing of Huge Datasets

#python #programming #cleancode #data

3 min read

DEVANSHU PATIL

Oct 10

Python Asynchronous Programming: Asyncio Event Loop, Coroutines, and Tasks

#python #async #backend #programming

3 min read

DEVANSHU PATIL

Oct 10

SQL vs NoSQL: Making the Right Architectural Choice for Modern Applications

#database #systemdesign #architecture #backend

3 min read

DEVANSHU PATIL

Oct 10

Optimizing Slow MySQL Queries: EXPLAIN Analysis, Index Merging, and Query Rewriting

#mysql #sql #performance #database

3 min read

DEVANSHU PATIL

Oct 9

MySQL Transaction Isolation Levels: Dirty Reads, Non-Repeatable Reads, and Phantom Reads

#mysql #database #sql #systemdesign

3 min read

DEVANSHU PATIL

Oct 9

MySQL InnoDB Storage Engine Deep Dive: B+ Trees, Clustered Indexes, and Buffer Pools

#mysql #database #backend #sql

3 min read

DEVANSHU PATIL

Oct 9

Mastering PostgreSQL Transactions: Isolation Levels, Phantom Reads, and Serialization Anomalies

#postgres #database #sql #backend

3 min read

DEVANSHU PATIL

Oct 9

MongoDB Indexing Strategies: ESR Rule, Explain Plans, and Performance Tuning

#mongodb #database #backend #performance

3 min read

DEVANSHU PATIL

Oct 9

Component Design Patterns in React: Compound Components and Render Props in Practice

#react #javascript #architecture #webdev

4 min read

DEVANSHU PATIL

Oct 9

Server State vs Client State in React: Why TanStack Query Changes Everything

#react #webdev #frontend #javascript

4 min read

DEVANSHU PATIL

Oct 8

Building Reusable Custom React Hooks: Form State, Debounce, and Intersection Observers

#react #javascript #cleancode #webdev

4 min read

DEVANSHU PATIL

Oct 8

Optimizing React Re-Renders: When to Use useMemo, useCallback, and React.memo

#react #javascript #performance #frontend

4 min read

DEVANSHU PATIL

Oct 8

Mastering React Concurrency: useTransition, useDeferredValue, and Non-Blocking UI Updates

#react #javascript #frontend #webdev

5 min read

DEVANSHU PATIL

Oct 8

Node.js Clustering and Worker Threads: Scaling CPU-Bound Tasks on Multi-Core Servers

#node #performance #backend #concurrency

5 min read

DEVANSHU PATIL

Oct 8

JWT Authentication Architecture: Access Tokens, Refresh Tokens, and Secure HttpOnly Cookies

#security #node #auth #webdev

5 min read

DEVANSHU PATIL

Oct 8

Securing Node.js REST APIs: Rate Limiting, Helmet Headers, and CORS In-Depth

#node #express #security #webdev

5 min read

DEVANSHU PATIL

Oct 7

Robust Error Handling and Async Route Wrappers in Express.js

#express #node #javascript #backend

4 min read

DEVANSHU PATIL

Oct 7

Production-Grade Express.js Architecture: Layered Controller, Service, and Repository Pattern

#express #node #backend #architecture

5 min read

DEVANSHU PATIL

Oct 7

Streaming Large Files in Node.js: Readable, Writable, and Transform Streams

#node #backend #javascript #performance

4 min read

DEVANSHU PATIL

Oct 7

The Node.js Event Loop Under the Hood: Timers, I/O Polling, and Microtasks

#node #javascript #backend #programming

4 min read

DEVANSHU PATIL

Oct 7

Heap and Priority Queue Invariants: Implementing Min-Heap from Scratch and Top-K Elements

#dsa #algorithms #datastructures #interviewprep

5 min read

DEVANSHU PATIL

Oct 7

Trie Data Structure: Efficient Prefix Matching and Autocomplete Implementation

#dsa #algorithms #programming #datasta

5 min read

DEVANSHU PATIL

Oct 6

Dynamic Programming Demystified: From Memoization to Tabulation and Space Optimization

#dsa #algorithms #leetcode #interviewprep

5 min read

DEVANSHU PATIL

Oct 6

Union-Find (Disjoint Set Union): Path Compression and Union by Rank Explained

#dsa #algorithms #computerscience #leetcode

4 min read

DEVANSHU PATIL

Oct 6

Topological Sort: Kahn Algorithm vs Post-Order DFS for Dependency Resolution

#dsa #algorithms #systemdesign #leetcode

4 min read

DEVANSHU PATIL

Oct 6

Graph Traversal Patterns: BFS vs DFS with Cycle Detection in Directed and Undirected Graphs

#dsa #algorithms #computerscience #interviewprep

4 min read

DEVANSHU PATIL

Oct 6

Binary Search Beyond Arrays: Searching on the Answer Space

#dsa #algorithms #leetcode #interviewprep

4 min read

DEVANSHU PATIL

Oct 6

Mastering Monotonic Stacks: Next Greater Element and Histogram Problems

#dsa #algorithms #leetcode #computerscience

4 min read

DEVANSHU PATIL

Oct 5

Two Pointers in Practice: Opposite Direction vs Fast and Slow Pointers

#dsa #algorithms #leetcode #python

4 min read

DEVANSHU PATIL

Oct 5

The Sliding Window Technique: Solving Subarray and Substring Problems in O(N)

#dsa #algorithms #leetcode #programming

4 min read

DEVANSHU PATIL

Oct 5

Java Collections Deep Dive: HashMap Internal Working and Collision Resolution

#java #dsa #programming #interviewprep

1

5 min read

DEVANSHU PATIL

Oct 5

Effective Exception Handling in Java: Checked vs Unchecked and Custom Error Hierarchies

#java #backend #cleancode #bestpractices

4 min read

DEVANSHU PATIL

Oct 5

Understanding the Java Memory Model: Volatile, Happening-Before, and CPU Caching

#java #concurrency #programming #computerscience

5 min read

DEVANSHU PATIL

Oct 5

Java 8 Streams vs Traditional Loops: Performance, Readability, and Lazy Evaluation

#java #dsa #performance #cleancode

4 min read

DEVANSHU PATIL

Oct 4

Pattern Matching in Java 21: Switch Expressions, Record Patterns, and Guard Clauses

#java #programming #cleancode #development

4 min read

DEVANSHU PATIL

Oct 4

Java Records and Sealed Classes: Designing Type-Safe Domain Models

#java #architecture #softwareengineering #cleancode

4 min read

DEVANSHU PATIL

Oct 4

The 5 System Design Tradeoffs Every Backend Engineer Must Navigate

#systemdesign #architecture #backend #programming

3 min read

DEVANSHU PATIL

Oct 4

Defensive Coding: Writing Invariants, Preconditions, and Result Types That Never Panic

#programming #cleancode #architecture #softwareengineering

2 min read

DEVANSHU PATIL

Oct 4

Mastering Git Internals: Blobs, Trees, Commits, and Resolving Ugly Merge Conflicts

#git #devops #programming #softwareengineering

2 min read

DEVANSHU PATIL

Oct 4

Cache Invalidation Strategies: Write-Through, Write-Behind, and Cache-Aside Explained

#redis #database #architecture #performance

2 min read

DEVANSHU PATIL

Oct 3

Understanding Linux File Descriptors, Epoll, and Non-Blocking I/O

#linux #performance #backend #networking

2 min read

DEVANSHU PATIL

Oct 3

Clean Architecture in Go: Structuring Domain, Use Cases, and Repositories

#go #architecture #cleancode #backend

2 min read

DEVANSHU PATIL

Oct 3

WebSockets vs Server-Sent Events (SSE): Choosing the Right Real-Time Transport

#webdev #javascript #backend #architecture

2 min read

DEVANSHU PATIL

Oct 3

Why Your Microservice Architecture Should Probably Be a Modular Monolith First

#architecture #microservices #softwareengineering #backend

2 min read

DEVANSHU PATIL

Oct 3

Nginx Reverse Proxy & Load Balancing: SSL Termination, Caching, and Tuning

#nginx #devops #linux #webdev

1

3 min read

DEVANSHU PATIL

Oct 3

Designing an Audit Logging System That Can Handle Millions of Writes

#architecture #database #security #backend

2 min read

DEVANSHU PATIL

Oct 2

Optimistic vs Pessimistic Locking: Handling Race Conditions in High-Contention Databases

#database #sql #architecture #backend

2 min read

DEVANSHU PATIL

Oct 2

Why Memory Leaks Happen in Garbage-Collected Languages: A Practical JVM & Node.js Guide

#java #javascript #performance #backend

2 min read

DEVANSHU PATIL

Oct 2

The Circuit Breaker Pattern in Microservices: Protecting Downstream Dependencies

#microservices #architecture #resilience #backend

2 min read

DEVANSHU PATIL

Oct 2

PostgreSQL Row-Level Security: Multi-Tenancy Without Leaking Tenant Data

#postgres #security #database #backend

2 min read

DEVANSHU PATIL

Oct 2

Kafka Partitions and Consumer Groups: How to Prevent Head-of-Line Blocking

#kafka #backend #architecture #distributed

2 min read

DEVANSHU PATIL

Oct 2

Structured Logging and Distributed Tracing: Moving Beyond console.log

#devops #observability #python #backend

2 min read

DEVANSHU PATIL

Oct 1

Zero-Downtime Database Migrations: The Expand and Contract Pattern in Production

#database #postgres #devops #architecture

2 min read

DEVANSHU PATIL

Oct 1

Rate Limiting Architectures: Sliding Window Counter Algorithm with Redis

#redis #api #backend #systemdesign

2 min read

DEVANSHU PATIL

Oct 1

Mastering Database Connection Pooling: HikariCP Tuning for High-Throughput APIs

#java #database #performance #backend

2 min read

DEVANSHU PATIL

Oct 1

Building Offline-First Android Apps with Room, Kotlin Flow, and WorkManager

#android #kotlin #architecture #mobile

2 min read

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