API Integration Strategies That Survive Peak Season
Idempotency, retry queues, and observability patterns for connecting Shopify to ERP, WMS, and CRM systems.
Integrations fail at peak, not in testing. Black Friday multiplies volume, latency, and the probability that a downstream system returns a 500 at exactly the wrong moment.
Make every write idempotent. Give each operation a stable key so a retry cannot create a duplicate order, a double refund, or a phantom inventory adjustment.
Queue everything. A durable queue with exponential backoff turns a downstream outage into a delay instead of data loss, and it gives you a replay mechanism when something needs fixing.
Instrument the seams. Log every sync with a correlation ID, expose a dashboard for lag and failure rate, and alert on the derivative — a rising failure rate matters more than a single failure.
And define the source of truth per field, explicitly. Most integration bugs are two systems both believing they own the price.