System Internals

System Internals Guides

01·Apache Cassandra 02·OpenObserve 03·MinIO 04·Redis 05·Apache Kafka 06·Apache Flink 07·ZooKeeper 08·NGINX 09·Elasticsearch 10·Apache Lucene

System Design Interview · Foundations

01·Rate Limiter 02·Consistent Hashing & Key-Value Store 03·Unique ID Generator 04·URL Shortener 05·Web Crawler

System Design Interview · Counting & Analytics

01·Count Unique Active Users 02·Trending Topics / Top-K 03·Ad Click / Impression Counter 04·Metrics / Time-Series Store 05·Logging / Analytics Pipeline

System Design Interview · Feeds, Messaging & Social

01·Notification System 02·News Feed System 03·Chat System 04·Social Graph 05·Live Comments / Presence

System Design Interview · Search, Geo & Logistics

01·Search Autocomplete 02·Proximity Service (Nearby Places) 03·Ride Matching (Dispatch) 04·Package / Delivery Tracking

System Design Interview · Media & Collaboration

01·Video Platform (YouTube) 02·Cloud Storage (Google Drive) 03·Collaborative Editing (Docs)

System Design Interview · Coordination, Money & Markets

01·Distributed Lock / Leader Election 02·Idempotency / Exactly-Once 03·Payment / Wallet System 04·Ad Auction / Real-Time Bidding 05·Ticket Booking (Inventory)

System Design Interview · Patterns

01·Common Patterns

Leadership Interview Prep

01·Project / Roadmap Leadership 02·Technical Design 03·SRE Partnership 04·Operational Leadership 05·People Management

Interview Playbooks

01·Interview Story Bank 02·Leadership Interview Playbook