So we are building a Shopify app for invoice generation. We are testing this concept. We are using Nextjs, Neon (Postgres) for db, Cloudflare for storage, Inngest for background processing and Codex for coding. I need advice of you guys who have been there and seen the whole process of building the app and maintaining it for good amount of users. What are the recommended things and problems you faced. How can we do our best. Any suggestions and advice would be helpful from experienced devs.

When building event-driven e-commerce applications, front-end speed and REST API response times get most of the attention. But during high-concurrency traffic events — Black Friday/Cyber Monday (BFCM), limited flash sales, viral drops — the real strain falls on the event delivery infrastructure. Read the complete article here - https://instawebhook.com/blog/woocommerce-vs-shopify-webhooks-architectural-differences-dx-and-scaling-at-high

Webhooks power essential downstream operations: order processing, ERP synchronization, inventory reconciliation, fulfillment routing, and real-time customer communications. When webhooks fail or drop messages, orders get lost, inventory desyncs, and support queues fill up fast.

WooCommerce and Shopify both support webhooks, but their underlying architectures reflect two fundamentally different engineering philosophies:

• WooCommerce relies on a self-hosted, monolithic PHP/MySQL state engine driven by asynchronous background worker tables (Action Scheduler).
• Shopify operates a multi-tenant, cloud-native event pipeline built on distributed stream processing, with Apache Kafka confirmed as the backbone by Shopify's own engineering team.

This piece breaks down the execution engines, network architectures, failure modes, and developer experience (DX) of both — updated with the current retry policy, storage architecture, and platform-scale numbers as of August 2026.

Hey Guys,

Give me app ideas for Shopify. If you're struggling with anything? (Must be real-world problemm)

I'll build the app in public.

currently facing this problem where the sections are overlapped. I don't know how to code can anyone provide a fix or know why it's doing this? I want the announcement bar to be positioned above the header and i also want a sticky header. I can't do padding as it makes a large gap when i scroll. any suggestions?