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Deep Dives & Case Studies

In-depth explorations of real-world system design challenges and solutions

System Design

5 min read

saurav9760

Jul 30, 2025

Rainbow Table Attack: A Detailed Guide

Rainbow Table Attack reverses hashed passwords using precomputed tables. Faster than brute-force, but ineffective against salted & slow hashes (bcrypt/PBKDF2). Defense: Always salt + stretch passwords!

719 24

The Ultimate Guide to Text Encoding: How Computers Understand Our Words

System Design

5 min read

saurav9760

Jul 29, 2025

The Ultimate Guide to Text Encoding: How Computers Understand Our Words

How do computers understand our words, emojis, and symbols? Through text encoding - the process that translates human-readable characters into binary (0s and 1s). This guide explores key encoding methods including: ASCII , UTF-8, Base64, Url Encoding,

660 24

How to Securely Store Passwords in a Database: A Comprehensive Guide

System Design

5 min read

saurav9760

Jul 29, 2025

How to Securely Store Passwords in a Database: A Comprehensive Guide

Learn how to securely store passwords in a database with this comprehensive guide. Discover best practices like using Argon2 or bcrypt, salting, and key stretching. Avoid common pitfalls and implement robust security with step-by-step Python and Node.js examples. Protect user data effectively!

569 24

Latest Articles

Fresh content on system design patterns, best practices, and emerging technologies

System Design

saurav9760

Oct 19

Consistent Hashing Explained

Consistent Hashing minimizes data movement in distributed systems using a hash ring for key-server mapping. Virtual nodes improve load balancing; MD5 or MurmurHash ensures even distribution. Paired with replication, it enhances fault tolerance in systems like DynamoDB. Tuning VNodes optimizes scalab

#Consistent Hashing #Distributed Systems #Hash Ring

Bloom Filters Explained in Simple Words

Learn how Bloom Filters efficiently check if an item is in a set with minimal memory. Discover their architecture, pros, cons, and real-world uses in databases, caching, and blockchain.

#Bloom Filter #Data Structures #Databases

Rainbow Table Attack: A Detailed Guide

#System Design

How to Securely Store Passwords in a Database: A Comprehensive Guide

#passwords

Revoking JWTs: A Simple Guide

JSON Web Tokens (JWTs) are stateless, making revocation tricky. Use short-lived tokens (e.g., 15m) with refresh tokens, stored server-side, to revoke access by deleting them. Alternatively, blacklist JWTs using a unique jti, change the secret key, or use token versions.

#jason web tokens

Understanding JWTs: Your Guide to JSON Web Tokens

Learn how JSON Web Tokens (JWTs) work—the compact, secure keys powering modern authentication. Discover their structure, benefits, security tips, and real-world code examples for seamless API and user auth.

#JWT #Authentication #WebSecurity

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