Building a Dynamic Feature Flagging and Entitlements Engine for Subscription Tiers
Architect a sub-millisecond cloud platform entitlements engine to gate features, manage seat quotas, and handle customer plan overrides with Redis.
Subscription Billing, Metering & Entitlements
Real-time usage metering pipelines, Stripe webhook reconciliation, dynamic feature flags, and dunning workflows.
Designing Dunning Workflows: Engineering Automated Involuntary Churn Recovery
A technical guide to recovering failed subscription payments using smart retry schedules, in-app grace periods, and card updater networks.
Designing a Real-Time Usage-Based Metering Pipeline for Cloud Platforms
Architect a high-throughput, idempotent event metering pipeline for consumption billing with Kafka, Redis deduplication, and TimescaleDB rollups.
Handling Subscription Proration, Plan Upgrades, and Mid-Cycle Downgrades
A mathematical guide to calculating fair mid-cycle subscription proration credits, seat additions, and revenue recognition under ASC 606.
Stripe Webhook Reconciliation: Ensuring Idempotent Subscription Billing
A technical guide to handling out-of-order and dropped Stripe webhooks using monotonic state machines and the transactional outbox pattern.