DevOps for Subscription Services

Subscription platforms need: reliable recurring payment processing (Stripe, Paddle, or custom), dunning (retry failed charges with smart timing), usage metering for consumption-based pricing, plan management (upgrades, downgrades, prorations), invoice generation, and webhook processing from payment providers. Each piece must be reliable — billing failures directly impact revenue.

Payment webhooks from Stripe/Paddle are processed via queue-based workers with exactly-once semantics. Idempotency keys prevent duplicate charges. Failed webhooks are retried with exponential backoff. Payment state machines ensure subscriptions transition correctly through created, active, past_due, canceled, and expired states. Database transactions ensure billing records are consistent.

Failed charges don't immediately cancel subscriptions. We implement smart dunning: retry schedules optimized by failure reason (insufficient funds retry in 3 days, expired card prompts update immediately), pre-dunning emails before card expiration, and grace periods that give customers time to resolve payment issues. Revenue recovery rates of 20–40% of initially failed charges are typical.

For consumption-based pricing, we implement event ingestion pipelines that track usage in real time. Metering events flow through Kafka or SQS to aggregation workers that compute billable usage. Pre-aggregated counters in Redis provide real-time usage dashboards. End-of-period aggregations generate line items for invoicing. Usage data is immutable and auditable.

Dashboards track MRR, churn rate, failed payment rate, dunning recovery rate, and plan distribution in real time. Alerts fire for anomalies — unusual churn spikes, payment processing errors, or metering pipeline delays. Revenue impact is quantified for every operational issue. Business metrics sit alongside infrastructure metrics in the same monitoring stack.

Purchase the engagement, submit your async brief with your billing provider and pricing model, and receive a complete subscription infrastructure implementation within 7–10 business days.