Class Central is learner-supported. When you buy through links on our site, we may earn an affiliate commission.

CodeSignal

Tax API: Country-Based Rates and Checkout Snapshots

via CodeSignal

Go to class Write review

Overview

Make tax a first-class part of your e-commerce backend. You'll add a dedicated tax rates table, expose a small admin-style Tax Rates API, and let carts choose a tax country so totals update in real time.

Syllabus

  • Unit 1: Tax Rates Configuration API
    • Review the repository, service, and route layers for tax rates
    • Implement repository queries for tax rates
    • Implement validation and service functions for tax rates
    • Implement GET/PUT/DELETE routes for tax rates
  • Unit 2: Applying Cart Taxes
    • Review how carts store tax_country and compute totals
    • Implement cart tax country validation and persistence
    • Resolve tax rate by country and compute cart totals
    • Implement the cart tax country route handler
  • Unit 3: Snapshotting Tax at Checkout
    • Snapshotting Tax at Checkout
    • Persist tax snapshot fields on the order at checkout
    • Map tax snapshot fields in the Order read model
    • Remove recomputation and rely on checkout snapshots

Reviews

Start your review of Tax API: Country-Based Rates and Checkout Snapshots

Go to class

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free
Someone learning on their laptop while sitting on the floor.