Deep dives into system design, technical interviews, and software engineering best practices.
Polling vs. Long Polling vs. SSE vs. WebSockets vs. Webhooks
Whether you are chatting with a friend or playing an online game, updates show up in real time without hitting “refresh”.
How to Scale a System from 0 to 10 million+ Users
Scaling is a complex topic, but after working at big tech on services handling millions of requests...
How Load Balancers Actually Work
A Deep Dive
The Hidden Cost of Database Indexes
Just add an index. This is the most common advice when a query runs slow.
Pub-Sub vs Message Queue vs Message Broker
What's the difference?
Why You Should NEVER Start With Microservices
The hidden cost of premature optimization.
Latency vs. Throughput vs. Bandwidth
What's the difference?
Top 6 API Architecture Styles
An API defines how two systems communicate, what data can be shared, and in what format.
How Indexing Works in Distributed Databases
In a single-node database, indexing is relatively simple.
Clean Code Tips I Learned from Senior Engineers
Being good at coding and writing good code are two different skills.
What are Server-Sent Events (SSE)?
Imagine you’re watching a stock market dashboard. Prices keep changing every second, sometimes multiple times in a second.
The 10 BIG Questions of System Design
System design is often misunderstood as a simple exercise of sketching boxes and arrows on a whiteboard.
File Storage vs Object Storage vs Block Storage
When it comes to storing large unstructured data like images, documents, videos, there are three popular storage solutions:
Designing a Distributed Rate Limiter
A step-by-step guide to designing a distributed rate limiter.
Top 10 WebSocket Use Cases in System Design
Real-time features are everywhere—chat apps, live dashboards, collaborative editors, multiplayer games.
10 Must-Know Database Types for System Design Interviews
Choosing the right database is one of the most critical decisions you’ll make in a system design interview.
Why is Redis so Fast and Efficient?
despite being single-threaded
Designing a Proximity Service like Yelp
A step-by-step guide to designing a proximity service like Yelp.
Design Google Docs
System Design Interview
Sharding vs. Partitioning
What's the difference?
Designing Social Media News Feed System
System Design Interview
How Databases Guarantee Durability (Even After Crashes)
One of the things that make databases truly powerful is their ability to protect your data even in the face of unexpected failures.
Top 15 Strategies to Reduce Latency
Latency is the time it takes for a system to respond to a user's action.
Designing a Distributed Key-Value Store (Step-by-Step)
A key-value store is a simple type of database where data is stored as {key: value} pairs.
How to Handle Failures in Distributed Systems
In a distributed system, failures aren’t a possibility, they’re a certainty.
Top 10 Kafka Use Cases
Apache Kafka began its journey at LinkedIn as an internal tool designed to collect and process massive amounts of log data efficiently.
Top 15 Database Scaling Techniques
When your application is small, with just a few hundred users, a single database server is usually enough to handle all the reads, writes, and…
15 Data Structures that Power Distributed Databases
Distributed Databases are the backbone of modern large-scale applications.
Top 10 Redis Use Cases
Explained with Code
Coding Interviews were HARD Until I Learned These 20 Tips
I gave my first coding interview in 2016 and failed.
Master the Art of REST API Design
The Ultimate Guide
System Design Interviews were HARD Until I Learned these 15 Tips
When I started preparing for system design interviews for the first time in 2019, I felt completely overwhelmed.
9 Software Architecture Patterns EVERY Developer Should Know
Software architecture patterns form the backbone of modern application development.
10 Data Structures That Make Databases Fast and Scalable
From B-Trees to Bloom Filters
How I Got Good at Coding Interviews
Solving 500+ LeetCode problems doesn’t mean that you can pass any coding interview.
15 System Design Building Blocks You Should Know
System design can feel complex, but once you understand its fundamental building blocks and how to stitch them together, everything falls into place.
Design Principles Every Developer Should Know
Must-Know Software Design Principles