๐ Day 4 of building @envfyjs !
๐ Documentation is now live:
https://t.co/oYpNgzts5Q
โ v0.3.0 released
โก v0.4.0 is already in progress
๐บ๏ธ Roadmap:
https://t.co/8OH4k6pSXU
#NodeJS#TypeScript#OpenSource#BuildInPublic
Senior Backend Interview in 2026.
How many of these can you explain without Googling?
- Event Sourcing
- CQRS
- Saga Pattern
- Outbox Pattern
- Idempotency Keys
- Consistent Hashing
- Distributed Locks
- Backpressure
- Write-Ahead Logging (WAL)
- Read-Your-Writes Consistency
- Quorum Reads & Writes
- Vector Clocks
- Gossip Protocol
- Bloom Filters
- Tombstone Records
- Token Bucket vs Leaky Bucket
- Circuit Breakers
- Bulkhead Isolation
- Cache Invalidation
- Leader Election
- Split Brain Problem
- Exactly-Once vs At-Least-Once Delivery
- Change Data Capture (CDC)
- Two-Phase Commit (2PC)
- Raft vs Paxos
If you know more than 10, you are ready for system design interview.
Cursor just held their first ever conference.
And they dropped:
- 1.5T model trained from scratch
- Github direct replacement Origin
- iOS app
nobody saw this coming...
full breakdown (thread):
SpaceX just acquired Cursor for $60B
> be Cursor
> 4 MIT students start a side project in 2022
> build the AI coding tool developers love
> hit a $10B valuation
> decide copilots arenโt enough
> move into models
> need massive compute to compete with OpenAI, Anthropic & Google
> meanwhile xAI is losing the coding race
> realizes catching up could take years
> skips the line
> buys Cursor for $60B
> Cursor gets compute
> xAI gets the coding leader
> founders become multi-billionaires
Env files break Node.js apps more than you think ๐ฌ
I built Envfy - a simple, type-safe env validator for Node.js
Check the full blog on medium:
https://t.co/CEtkJr6adh
#NodeJS#TypeScript#OpenSource#BuildInPublic
Want to get into backend development?
- Build your own DNS
- Build your own BitTorrent
- Build your own Decentralized file system
- Build your own Interpreter
- Build your own kafka
- Build your won web scraper
- Build your own Redis
- Build your own Database Engine
- Build your own Distributed Job Queue
- Build your own Search Engine
- Build your own web server
- Build your own Reverse Proxy
- Build your own API gateway
- Build your own Load Balancer
- Build your own URL Shortener
- Build your own CDN
- Build your own Pub/Sub System
- Build your own Task Scheduler
- Build your own Email Service
- Build your own File Storage Service
- Build your own Logging System
- Build your own Metrics/Monitoring System
- Build your own Feature Flag System
- Build your own Payment Gateway Mock
- Build your own Rate Limiter
- Build your own Notification System
- Build your own WebSocket Server
- Build your own OAuth Server
- Build your own CI/CD Pipeline System
Netflix, Wikipedia, Airbnb, Dropbox ~ all run on the same web server.
One quiet Russian engineer wrote it alone. For free. ๐คฏ
Meet Igor Sysoev ๐ท๐บ
> Russian software engineer. Born 1970 in Soviet Kazakhstan.
> Failed his first university entrance exam.
> Joined Rambler in 2000 as a system administrator.
> 2002 ~ started writing a new web server in his free time. Alone.
> Goal: handle 10,000 simultaneous users on one machine ~ a problem Apache (the dominant web server at the time) couldn't solve.
> 2004 ~ released nginx publicly. Free. Open source.
> Zero marketing. Zero PR. Just the code.
> 2008 ~ nginx was serving 500 million requests per day at Rambler.
> 2011 ~ founded Nginx Inc. with co-founder Maxim Konovalov.
> 2013 ~ Netflix scaled its streaming CDN to 40 Gbps per server using nginx.
> 2019 ~ F5 acquired the company for $670 million.
> December 2019 ~ Russian police raided his Moscow office over a fake copyright claim.
> The Russian tech community publicly defended him. Charges were dropped.๐
> 2021 ~ nginx overtook Apache as the #1 web server on Earth.
> 2022 ~ left F5 quietly. No farewell tour. No book deal.
> Today nginx powers Netflix, Wikipedia, Airbnb, Dropbox, Cloudflare, WordPress.
> 33% of every website on Earth runs on his code. Apache trails at 26%. Microsoft's IIS isn't even close.
> Still 100% open-source. Still free.
One man wrote it alone, in his free time, for free.
He never sought publicity. He never asked for credit.
A third of every website on Earth still runs on his work.
Webserver GOAT. ๐