Product APIs
Connect browser and mobile clients to validated application operations.
Node.js Development
Node.js APIs, integration services and realtime backends, with clear boundaries for asynchronous work and failure recovery.
Event loop
ReceiveDispatchRespondBackground workersevt-104 evt-105 evt-104 Repeated event, one effect
Tools & technologies
- Node.js
- TypeScript
- SQL database
- Job queue
Process a repeated payment webhook
Capability Example
A provider sends the same successful payment event twice.
Illustrative data. Nothing is sent to an external system.
Example workspace1 / 3
Verified webhook
1event_id: evt-104
2Signature checked
3Event type: payment succeeded
Check the webhook signature and expected event shape.
Duplicate event
1evt-104 already recorded
2Payment state unchanged
3Repeated receipt acknowledged
Record the provider event ID before applying the state change.
Persisted notification
1Downstream event stored
2Worker publishes status
3Processing trace retained
Notify downstream services from a persisted event record.
One payment-state transition and a traceable delivery record for follow-up processing.
Follow the record through the next step
APIs and event-driven work that can recover.
Integration services
Receive webhooks, reconcile external records and manage retries.
Realtime features
Deliver live updates without making socket connections the source of truth.
Services with useful failure behavior.
- Typed Node.js service
- API and event contracts
- Load and retry tests
- Deployment and monitoring configuration
- Typed Node.js service
- API and event contracts
- Load and retry tests
- Deployment and monitoring configuration
Keep blocking work away from the request loop.
Concurrency
Measure long tasks and move unsuitable CPU-heavy work outside the request loop.
Provider behavior
Retries, event ordering and rate limits differ across external APIs.
Questions before we start.
Can Node.js work with our database?
Usually. Driver support, transaction behavior and connection limits are checked against the actual database and deployment environment.
Can you support an existing JavaScript backend?
Yes. Improvements can be staged around tests, service boundaries and selected TypeScript adoption.
Bring your starting point.
Share API consumers, expected traffic and examples of external events the service must handle.
