Practical rebuilds of these systems — real failovers & chaos drills — are in production onYouTube, soon.

Roadmap

Core Conceptsincidents next
live
✓Caching Strategies
  • 🔒 Thundering Herd & Cache Stampedeplanned
Core Concepts
live
✓Load Balancing
Core Concepts
live
✓Database Replication
  • 🔒 Replication Lag & Stale Read Bugsplanned
Core Concepts
live
✓Sharding & Partitioning
Core Concepts
live
✓Consistency & Consensus
  • 🔒 Raft Leader Flapping Under Network Jitterplanned
Core Concepts
live
✓Rate Limiting
Core Concepts
live
✓API Design & Idempotency
  • 🔒 Double Charges: Idempotency Keys Done Wrongplanned
Core Concepts
live
✓Observability
Key Technologies
live
✓Redis
  • 🔒 The Memory Cliff: Eviction Thrash Under maxmemoryplanned
  • 🔒 Replication Buffer Death Spiralplanned
  • 🔒 Hot Key: One Shard, All The Trafficplanned
Key Technologies
live
✓Apache Kafka
  • 🔒 ISR Shrink: The Replication Death Spiralplanned
  • 🔒 Rebalance Storm: Consumers Stuck In A Loopplanned
  • 🔒 Unclean Leader Election & Silent Data Lossplanned
Key Technologies
live
✓Apache Cassandra
  • 🔒 Tombstone Hell: Read Timeouts From Deletesplanned
Key Technologies
live
✓DynamoDB
  • 🔒 Hot Partition Throttling Under Burstplanned
Key Technologies
live
✓PostgreSQL
  • 🔒 Connection Storm: When PgBouncer Saves Youplanned
  • 🔒 Transaction ID Wraparound: The Clock Runs Outplanned
Key Technologies
live
✓Elasticsearch
  • 🔒 Split-Brain: Two Masters, One Clusterplanned
Key Technologies
live
✓Celery
  • 🔒 Broker Backpressure & The Invisible Queueplanned
Key Technologies
live
✓Kubernetes
  • 🔒 OOMKill Cascade & Eviction Stormsplanned
Core Concepts
live
✓Networking Essentials
Core Concepts
live
✓Consistent Hashing
Core Concepts
live
✓CAP Theorem & Tradeoffs
Core Concepts
live
✓Database Indexing
Key Technologies
live
✓ZooKeeper & etcd
Key Technologies
live
✓API Gateway
Patterns
live
✓Message Queues & Event Streaming
Patterns
live
✓Object Storage & Large Blobs