📘 Callback URL, FTP & SFTP Notes
You already know webhooks from a previous lesson. A **callback URL** is essentially the same idea at the core — but it's a broader, more general patte...
Moqui Framework — The Complete Guide
Moqui is an open-source, Java-based application framework for building enterprise business applications. Think of it as a powerful toolkit that handle...
Multi-Carrier API Integration Checklist
1. [What is a Shipping Aggregator?](#1-what-is-a-shipping-aggregator)
SSO (Single Sign-On)
SSO allows users to log in once with a single set of credentials and gain access to multiple applications or services without again-n-again login.
Assignment: fromDate & thruDate Analysis in HotWax Commerce OMS
Each step below shows **which entities get records created or updated**.
RPC (Remote Procedure Call)
Make calling code on a remote machine feel like calling it local.
GraphQL (Facebook) (2015)
Tool: Apollo GraphQL
Microservices Architecture — How Systems Communicate
A typical microservices system looks like this:
Moqui Framework — Deep-Dive Architecture Walkthrough
1. [The Big Picture — How Moqui Boots](#1-the-big-picture--how-moqui-boots)
Quartz – Job Scheduler
Quartz is an open source job scheduling library for Java that lets you automate tasks, either one-time or recurring.
Shopify API Guide
Everything you need to understand Shopify's API surfaces — when to use each, how rate limits work, and how to scale from single calls to async bulk op...
Shopify Backend Integration Layers — A Practical Guide
If you've integrated with any platform before, the mental model here is familiar. A Shopify store is a hosted system that owns your commerce data — pr...
Shopify GraphQL/JSON → HotWax OMS (OFBiz/Moqui) Mapping Reference
This document serves as the technical source of truth for how Shopify order data (queried via GraphQL) is mapped, transformed, and persisted inside th...
SQL in production — the journey of a query
Run EXPLAIN on every query that touches a table you don't fully trust the size of. If the plan shows type: ALL on something like OFBiz's OrderHeader o...
Webhooks
Register your webhook URL.