Many developers dive straight into git init, but the most critical work happens before the first line of code is written. Today, I’m walking you through my 7-step planning process using a Digital Marketplace backend as our case study.
1️⃣ The Strategy (The “Ask”)
Before writing code, I define the “Why.” Skipping this leads to feature creep and wasted hours.
Three Critical Questions:
Who is this for? (Target Audience)
What exact problem am I solving? (Pain Points)
What does success look like? (Definition of Done)
Example Case: Digital Marketplace
Users: Creators selling ebooks, courses, and digital assets.
Problem: Manual payment verification and insecure file delivery.
Success: A creator uploads a file, a user pays via local gateways (like Paystack), the product is delivered instantly, and earnings reflect in a dashboard.
2️⃣ Defining the MVP
What are the “must-have” features to get from zero to one? Focus on the core loop:
[ ] Identity: Authentication with User & Creator roles.
[ ] Management: File upload and storage for creators.
[ ] Checkout: Integration with local payment gateways.
[ ] Verification: Robust webhook handling for payment status.
[ ] Delivery: Automated email/secure download links.
[ ] Finances: A wallet system to track creator balances.
3️⃣ System Design (High-Level Thinking)
Visualizing data flow prevents bottlenecks later. Here is the logic for a purchase:
User → API → Backend → Database
↓
Payment Gateway
↓
Webhook → Backend → Update DB → Deliver Product
4️⃣ Database Design (The “Critical” Step)
This is where most projects fail. Designing a solid schema early saves days of refactoring.
Click to view the SQL Schema Entities
User: id, email, password, role (creator/customer)
Product: id, creator_id, title, price, file_url
Order: id, user_id, product_id, status (pending, paid, failed)
Transaction: id, order_id, amount, reference, status
Wallet: creator_id, balance
5️⃣ Offloading Background Tasks
Not every process belongs in the main request-response cycle. To keep the API snappy, I use Celery + Redis for:
Emails: Sending purchase confirmations.
Retries: Handling failed payment verification pings.
Security: Generating expiring, one-time-use download links.
6️⃣ Security Thinking (Day Zero)
Security isn’t a “later” feature. It’s a foundation:
Validation: Strict input sanitization to prevent injection.
Auth: Protecting endpoints with JWT or session-based security.
Storage: Using Signed URLs to ensure only paid users can access files.
Rate Limiting: Protecting APIs from brute force or DDoS attempts.
7️⃣ Infrastructure & Deployment
Decide on your stack before you start to avoid “environment hell.”
Containerization: Docker for local development and production consistency.
Hosting: Scalable providers like AWS or DigitalOcean.
Storage: S3 or Cloudinary for reliable asset hosting.
What do you think?
Do you have a different planning process, or do you prefer to “build and break” as you go? Let’s discuss in the comments!