How to Plan a Project Before Coding: A Practical Guide

How to Plan a Project Before Coding: A Practical Guide

Planning is the cheapest part of a project and the highest leverage. A day of planning saves a week of rework.

Step 1: Write the One-Sentence Goal

What does the app do? "A backend that lets users sign up, swipe, match, and chat." If you cannot say it in one sentence, you do not understand it.

Step 2: List All Features

Brainstorm every feature without filtering: signup, login, profile, photo, swipe, match, chat, payments, admin. Get them on paper.

Step 3: Group Features Into Modules

Group related features. Auth (signup, login, logout). Profile (edit, photo, about). Feed (browse). Matching (swipe, match). Chat (messages). Payments (subscription). Each module becomes a folder later.

Step 4: Prioritize Features

Tag each feature as Must Have, Should Have, or Nice to Have. For DevTinder MVP: auth, profile, feed, swipe, match. Chat and payments come later. Without prioritization, you build everything at once and ship nothing.

Step 5: Sketch the Database

For each module, list collections and fields. User: firstName, lastName, email, passwordHash, age, gender, photoUrl, about. Connection: fromUserId, toUserId, status. Sketch relationships (ref vs embed) and indexes (unique on email).

Step 6: Write the HLD

Major components, how they talk, external systems, tech stack. A diagram. One page.

Step 7: Write the LLD

For each module, write schemas, API contracts, internal logic, errors, and edge cases. Tables and code blocks, not prose.

Step 8: Sequence the Build

Order features by dependencies. You cannot build matching without users. You cannot build chat without matching. Build in this order: auth, profile, feed, swipe, match, chat, payments.

Step 9: Estimate

For each module, estimate hours or days. Add 30% buffer. Planning without estimates is wishful thinking.

Step 10: Get Feedback

Share the plan with another developer. They will find holes you missed. Fix the plan, not the code, while it is still cheap.

The Takeaway

Plan a project by writing a one-sentence goal, listing features, grouping into modules, prioritizing, sketching the database, writing HLD and LLD, sequencing by dependencies, estimating, and getting feedback. Planning is the cheapest lever you have.