A production-style backend pattern for external API syncs, signed webhooks, account-level rate control, and audit-ready history.
Every external API differs, but reliable integrations need the same foundations: secret boundaries, pagination, rate limits, durable state, and trusted webhooks.
Designed the provider abstraction, async client behavior, sync service, persistence schema, webhook verification, rate limiter, audit model, tests, CI, and Docker packaging.
New providers had to fit a reusable interface without leaking credentials or weakening provider-specific trust and rate constraints.
The named adapters are provider-like deterministic examples.
No real production credentials are included.
No hosted deployment or live provider volume is claimed.
A provider registry isolates adapters while a shared integration service coordinates cursor pagination, account-level rate limiting, sync history, records, audit events, and HMAC webhook verification with replay tolerance.
Pydantic secret types and non-returned credentials
Provider/account-level rate limiting
Timestamped HMAC webhook verification
Replay tolerance boundary
Persistent sync runs and audit records
Deterministic test providers
A reusable integration architecture with Stripe-like, Shopify-like, and HubSpot-like adapters that can be extended without changing the sync orchestration core.
Tayyab understands integration work as a reliability and trust problem, not just a sequence of HTTP calls.
Provider variation belongs behind an adapter boundary.
Webhook trust requires both signature validation and replay controls.
Audit history is part of the product when systems move business data.