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Why Classic ws and Socket.IO Collapse at 100k Connections
Standard Node.js WebSocket libraries (such as ws and Socket.IO) struggle when concurrent connections exceed 50,000 per server. V8 garbage collection pauses, buffer copies, and heavy memory footprints per socket (approx. 40KB–80KB each) cause high RAM pressure. uWebSockets.js implements a C++ native networking engine that handles over 1,000,000 concurrent WebSockets per server with sub-millisecond dispatch latencies.
Documented by Saizul Amin based on high-concurrency real-time WebSocket benchmarks.
Md Saizul Amin
Digital Systems Strategist · AI Agent Developer · 9+ years in digital & ITMd Saizul Amin is a digital systems strategist and AI automation engineer from Dhaka, Bangladesh. With 9+ years across IT, web development and digital marketing, he writes practical guides on technology, business, education and online growth — and builds the same kinds of systems (AI agents, websites, SEO and ad campaigns) for clients in Bangladesh, the UK and the USA.
Specialist in
Credentials & experience
- 🎓B.Sc. in Computer Science & EngineeringBangladesh University of Business & Technology (BUBT), 2017–2021
- 🤖AI Automation Engineer · Web Developer · SEO SpecialistUnique Mark Limited, Birmingham UK — 2024 to present
- 🌱IT SpecialistGreen Fund Initiative Inc., USA — 2024 to present
- 🏥Junior IT Consultant — Ministry of Health (DGHS)Built the first national Shareable Health Record website; supported 6,000+ facilities
- 🧭Head of ITWEDO Bangladesh — led IT for 50+ staff, 2021–2023