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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!

720 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,

661 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!

573 24

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Results for "Redis"

Found 5 articles matching your search

Understanding Distributed Locking: A Simple Guide

System Design

saurav9760

Oct 25

Understanding Distributed Locking: A Simple Guide

Distributed locking ensures that multiple processes in a distributed system access shared resources without conflicts. This guide explains what distributed locking is, why it’s needed, how it works, and tools like ZooKeeper, Redis, and Etcd that make it happen.

#Distributed Locking #Distributed Systems #Concurrency

Top Caching Strategies Explained — Complete Guide

Caching makes systems faster and handles more users. This guide explains caching simply, covering types like browser, server, and CDN caching, plus strategies like cache-aside and write-through. Learn where to use caches, how to manage them, and see examples from e-commerce sites to boost speed and

#Caching #System Design #Performance Optimization

Understanding Single Point of Failure (SPOF)

A Single Point of Failure (SPOF) can bring an entire system to a halt if it breaks. This guide explains what SPOFs are, where they hide in hardware, software, and third-party services, and how to eliminate them using redundancy, replication, and automation. Learn practical steps to build a reliable.

#Single Point of Failure #SPOF #Reliability

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

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

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