The original title is about Shopify app OAuth problems being caused by third-party APIs, not Shopify itself. Let me rewrite this concisely.

Short summary

Building Shopify apps requires handling third-party OAuth integrations that your framework doesn't touch. Learn four production-tested patterns: persist rotated refresh tokens, proactively refresh 60 seconds before expiry, throttle API calls across two layers, and design reconnect UI for dead connections. These patterns prevent silent token failures, API cascades during traffic spikes, and merchant support tickets.

• •Refresh tokens often rotate on each use—store new ones immediately or face silent connection death on the next refresh
• •Refresh proactively 60 seconds before expiry to avoid failed API calls and retries during webhook bursts (flash sales)
• •Two-layer rate-limit handling: even-space calls under normal load, respect Retry-After headers if 429 slips through

Generated with AI, which can make mistakes.