Reliability and Operations
Availability, failover, observability, incidents, and production readiness.
Lessons
- SLIs, SLOs, and Error Budgets — Measure Reliability Like a Product
- CI/CD & Developer Experience
- Noisy Neighbor in Multi-Tenant Systems
- The N+1 Query Problem
- Availability — Nines, Error Budgets, and Redundancy
- Distributed Locking & Lease Expiry — Mutual Exclusion and Fencing Tokens
- Out-of-Order Event Processing
- Checksums & Data Integrity
- Production-Readiness Reviews (PRRs)
- Tail Latency and Load Shedding — Surviving Peak Traffic Overload
- Watermarks & Late Events in Stream Processing
- Circuit Breakers and Cascading Failure Control — Stop One Fire From Burning the Block
- Disaster Recovery — RPO, RTO, and Backups That Work
- Distributed Tracing
- Duplicate Requests & the Idempotency Gap
- Failover — Switching to a Healthy Spare
- Fault Tolerance — Keep Working When Parts Fail
- Heartbeats — Liveness Signals in Distributed Systems
- Reliability — Correct Results Under Stress
- Retry Storms — When Recovery Makes the Outage Worse
- Single Point of Failure (SPOF) — Identifying and Eliminating SPOFs
- TCP vs UDP — Reliable Streams vs Lightweight Datagrams
- Thundering Herd
- Webhooks — Server-to-Server Event Callbacks
- Zero-Downtime Schema Migration
- Capacity Planning for Backend Services