RONI DAS

RONI DAS

Jul 11

How Google Search Serves Results: The Inverted Index, Scatter-Gather, and Ranking

#systemdesign #search #backend #scaling

3 min read

RONI DAS

Jul 11

Designing Uber Eats: The Three-Sided Marketplace, Dispatch, and ETA

#systemdesign #backend #geospatial #marketplace

3 min read

RONI DAS

Jul 11

Designing a Real-Time Leaderboard with Redis Sorted Sets

#systemdesign #redis #backend #scaling

3 min read

RONI DAS

Jul 11

How Zoom Delivers Low-Latency Video: SFU vs MCU, WebRTC, and Simulcast

#systemdesign #webrtc #networking #video

3 min read

RONI DAS

Jul 11

Designing a Stock Exchange Matching Engine: The Order Book and Price-Time Priority

#systemdesign #backend #finance #concurrency

3 min read

RONI DAS

Jul 11

How a Recommendation System Actually Works: Candidate Generation and Ranking

#systemdesign #machinelearning #backend #search

3 min read

RONI DAS

Jul 11

Designing an API Gateway: Routing, Auth, and the Filter Chain

#systemdesign #backend #microservices #api

1

3 min read

RONI DAS

Jul 11

Designing a Rate Limiter: Token Bucket vs Sliding Window, and Making It Distributed

#systemdesign #redis #backend #distributed

1

3 min read

RONI DAS

Jul 10

How a News Feed Works: Fanout on Write vs Fanout on Read

#systemdesign #architecture #scalability #interview

1

3 min read

RONI DAS

Jul 10

How Slack Delivers Real-Time Messages at Scale

#systemdesign #realtime #websockets #interview

3 min read

RONI DAS

Jul 10

How Ticketmaster Sells Seats Without Double-Selling Them

#systemdesign #concurrency #backend #interview

3 min read

RONI DAS

Jul 10

Proximity Search: How Yelp Finds Places Near You

#systemdesign #database #backend #interview

3 min read

RONI DAS

Jul 10

How Google Drive Syncs Files With Chunking and Deduplication

#systemdesign #storage #architecture #interview

3 min read

RONI DAS

Jul 10

Designing a Digital Wallet With a Double-Entry Ledger

#systemdesign #payments #database #interview

1

3 min read

RONI DAS

Jul 10

Designing a Distributed Job Scheduler That Runs Jobs Exactly Once

#systemdesign #distributed #backend #interview

1

3 min read

RONI DAS

Jul 10

Designing a Notification System That Fans Out to Push, Email, and SMS

#systemdesign #architecture #backend #interview

1

3 min read

RONI DAS

Jul 10

How Reddit Stores Comment Trees and Ranks Hot Posts

#systemdesign #database #algorithms #backend

3 min read

RONI DAS

Jul 10

How Elasticsearch Searches Fast: The Inverted Index and Shard Routing

#systemdesign #elasticsearch #search #backend

3 min read

RONI DAS

Jul 10

Why Redis Is Fast Even Though It Is Single-Threaded

#systemdesign #redis #performance #backend

3 min read

RONI DAS

Jul 10

How Telegram Delivers Messages to Million-Subscriber Channels

#systemdesign #messaging #scalability #backend

3 min read

RONI DAS

Jul 10

How Delta Lake Brings ACID to a Data Lake

#systemdesign #dataengineering #bigdata #database

1

3 min read

RONI DAS

Jul 10

Why Snowflake Separates Storage From Compute

#systemdesign #database #dataengineering #cloud

3 min read

RONI DAS

Jul 10

How Spotify Streams Audio and Builds Discover Weekly

#systemdesign #streaming #machinelearning #backend

3 min read

RONI DAS

Jul 10

How Airbnb Search and Booking Avoid Double-Booking

#systemdesign #database #concurrency #backend

3 min read

RONI DAS

Jul 10

Designing a payment system that never loses a cent

#systemdesign #payments #idempotency #consistency

4 min read

RONI DAS

Jul 10

How Discord stores an enormous number of messages without falling over

#systemdesign #database #cassandra #storage

4 min read

RONI DAS

Jul 10

Designing Google Maps: geospatial indexing and routing without melting the server

#systemdesign #algorithms #geospatial #routing

4 min read

RONI DAS

Jul 10

How Twitter's timeline actually works: the fanout problem

#systemdesign #scalability #caching #feed

3 min read

RONI DAS

Jul 10

Designing Instagram: the feed, the storage, and the parts that break at scale

#systemdesign #database #feed #storage

3 min read

RONI DAS

Jul 10

How Netflix streams video to hundreds of millions of people at once

#systemdesign #streaming #cdn #architecture

4 min read

RONI DAS

Jul 10

Designing a URL Shortener That Scales

#systemdesign #backend #architecture #scalability

4 min read

RONI DAS

Jul 10

Designing Amazon S3: How Object Storage Gets Eleven Nines of Durability

#systemdesign #aws #architecture #storage

4 min read

RONI DAS

Jul 10

How WhatsApp Delivers Billions of Messages a Day

#systemdesign #backend #architecture #messaging

3 min read

RONI DAS

Jul 10

How I Would Design Uber

#systemdesign #architecture #backend #scalability

3 min read

RONI DAS

Jul 10

Kafka vs RabbitMQ, the senior answer

#kafka #rabbitmq #systemdesign #backend

3 min read

RONI DAS

Jul 10

How I would design TikTok's For You feed

#systemdesign #architecture #backend #interview

3 min read

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Writing Debut

How Google Search Serves Results: The Inverted Index, Scatter-Gather, and Ranking

Designing Uber Eats: The Three-Sided Marketplace, Dispatch, and ETA

Designing a Real-Time Leaderboard with Redis Sorted Sets

How Zoom Delivers Low-Latency Video: SFU vs MCU, WebRTC, and Simulcast

Designing a Stock Exchange Matching Engine: The Order Book and Price-Time Priority

How a Recommendation System Actually Works: Candidate Generation and Ranking

Designing an API Gateway: Routing, Auth, and the Filter Chain

Designing a Rate Limiter: Token Bucket vs Sliding Window, and Making It Distributed

How a News Feed Works: Fanout on Write vs Fanout on Read

How Slack Delivers Real-Time Messages at Scale

How Ticketmaster Sells Seats Without Double-Selling Them

Proximity Search: How Yelp Finds Places Near You

How Google Drive Syncs Files With Chunking and Deduplication

Designing a Digital Wallet With a Double-Entry Ledger

Designing a Distributed Job Scheduler That Runs Jobs Exactly Once

Designing a Notification System That Fans Out to Push, Email, and SMS

How Reddit Stores Comment Trees and Ranks Hot Posts

How Elasticsearch Searches Fast: The Inverted Index and Shard Routing

Why Redis Is Fast Even Though It Is Single-Threaded

How Telegram Delivers Messages to Million-Subscriber Channels

How Delta Lake Brings ACID to a Data Lake

Why Snowflake Separates Storage From Compute

How Spotify Streams Audio and Builds Discover Weekly

How Airbnb Search and Booking Avoid Double-Booking

Designing a payment system that never loses a cent

How Discord stores an enormous number of messages without falling over

Designing Google Maps: geospatial indexing and routing without melting the server

How Twitter's timeline actually works: the fanout problem

Designing Instagram: the feed, the storage, and the parts that break at scale

How Netflix streams video to hundreds of millions of people at once

Designing a URL Shortener That Scales

Designing Amazon S3: How Object Storage Gets Eleven Nines of Durability

How WhatsApp Delivers Billions of Messages a Day

How I Would Design Uber

Kafka vs RabbitMQ, the senior answer

How I would design TikTok's For You feed