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Pattern Pick
Bit Manipulation Patterns
DSA TemplateIntermediate
ExploreDesign Blueprint
Music Streaming (Spotify)
Low Level DesignAdvanced
ExploreScale Study
Design a Notification System
System DesignHard
Deep divePacket Probe
DNS Security & DNSSEC
Networking & ProtocolsAdvanced
ExploreStaff+ Prep
Cross-Team Project Leadership
Staff+ InterviewAdvanced
ExploreKernel Dive
User Namespaces in Depth
Linux InternalsAdvanced
Deep dive
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DSA Templates
35Algorithm patterns & code templates
System Design
39End-to-end architecture problems
Low Level Design
90Design patterns & practical code
Key Technologies
59Deep dives into core tech
Infrastructure
35Production systems & operations
Networking & Protocols
51TCP, HTTP, TLS, DNS & more
Distributed Systems
38Consensus, replication & more
Linux Internals
84Kernel, networking & system calls
Cheat Sheets
24Quick reference cards for interviews
Recent Posts
System Design: Job Scheduler (10M Jobs/day, DAG Dependencies, Effectively-Once Execution)
System Design
Apr 15, 2026 · 61 min
System Design: LeetCode (Code Sandbox, Container Isolation, Real-Time Contests)
System Design
Apr 12, 2026 · 68 min
System Design: URL Shortener (10B Short URLs, 100K Redirects/sec)
System Design
Apr 11, 2026 · 42 min
Leadership
DirectorBuilding Engineering Brand
“Engineering brand compounds like interest. Stripe published technical blog posts for years before they became the default 'engineers love working there' company. Start now, expect results in 18 months.”
Org Design
GrowthCross-Functional Product Teams
“A well-composed product team includes a product manager, a designer, 4-6 engineers, and QA capacity (dedicated or shared). This is the smallest unit that can independently discover, build, and ship a product increment”
530+Articles
27Interactive Tools
16Categories
6Learning Stages
Learning Path
Discover Today
TiDB
MySQL-compatible distributed database that actually handles both OLTP and OLAP
Kubernetes Architecture
Container orchestration platform born from Google's Borg. Automates deployment, scaling, self-healing, and rollback for containerized workloads.
MinHash & Locality-Sensitive Hashing
MinHash estimates the Jaccard similarity between two sets without comparing them element by element. Two documents with 80% word overlap will have matching MinHash values about 80% of the time. This turns a potentially expensive set intersection into a fast signature comparison