coding interviews
+4
Aug 26, 2026
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5 min read
There is one point in this breakdown almost nobody talks about. It's at the end.
websockets
Aug 22, 2026
6 min read
How Netflix, Slack, and Discord chose their real time protocols
RAG
Aug 21, 2026
One approach costs $10. The other costs $50,000. Here's when each one wins.
CAP Theorem
Aug 17, 2026
From Amazon's shopping cart to DNS: how the world runs on stale data
distributed systems
+1
Aug 16, 2026
Why distributed systems need a single leader, how Raft and Paxos prevent split brain, and when to skip leader election entirely
Aug 10, 2026
What 'pick 2 of 3' actually means in distributed systems
circuit breaker
Aug 8, 2026
The three-state pattern that keeps one failing microservice from killing your entire system
data structures
Aug 3, 2026
10 bits per element. Zero stored data. Millions of queries saved.
AI Engineering
+2
Jul 5, 2026
Traffic distribution vs traffic management, and when you need both.
Jul 4, 2026
Most teams use only one. The best teams combine three.
Jul 1, 2026
Inside the 3 agent pipeline that handles code migrations at scale
Jun 29, 2026
They cut database nodes by 60% and made reads 8x faster.
Jun 27, 2026
Performance benchmarks, cost traps, and a decision tree for picking the right one
Jun 26, 2026
A real comparison with code, tradeoffs, and an honest opinion
Jun 25, 2026
LLMs have no built in concept of "done." Without stopping conditions, the loop runs until the money runs out.
Jun 21, 2026
Most multi agent systems fail not because agents cannot communicate, but because they cannot remember.
Jun 20, 2026
If the human tells it what to do at every step, it is a chatbot. Autonomy is the only line that matters.
Jun 19, 2026
The context window is not memory. It is a whiteboard that gets erased every time you close the tab.
+3
Jun 14, 2026
3 min read
The model is not the bottleneck. Your prompt is.
Jun 11, 2026
No math. No PhD. Just the mental model every engineer building on LLMs actually needs.
Jun 10, 2026
A backend engineer's guide to vector databases, HNSW graphs, and the embedding models powering every AI search system in 2026
Distributed System
Jun 6, 2026
4 min read
The architecture pattern that turns a frozen, hallucinating model into a grounded expert on your documents
Jun 2, 2026
Stop memorizing full architectures. Learn the patterns and you can design anything.
May 31, 2026
A decision framework tested across public APIs, complex frontends, and high throughput microservices
netflix
May 29, 2026
A deep dive into how Netflix built a global content delivery network from scratch