DEV Community: Tanya Jha

🐳 What is Docker? Explained without the buzzwords.

Tanya Jha — Wed, 24 Jun 2026 17:48:20 +0000

Imagine you’re moving to a new apartment.

Instead of packing items one by one every time, you put everything you need into a single box:

📦 Clothes
📦 Laptop
📦 Charger
📦 Books

Now wherever you go, you just carry the box and everything works.

Docker does the same thing for applications.

Instead of sending:

❌ “Install Node.js first”
❌ “Use version 18, not 20”
❌ “Install these 12 packages”
❌ “It works on my machine 🤷”

You put everything your app needs into a Docker container.

📦 Your code
📦 Required software
📦 Dependencies
📦 Configuration

Now anyone can run that container and get the exact same result.

Real-world example 👇

Imagine a chef creates a perfect burger recipe 🍔

Without Docker:

👨‍🍳 “Use this bread”
👨‍🍳 “Maybe this sauce”
👨‍🍳 “Make sure your oven version matches mine”

Result: Everyone’s burger tastes different 😭

With Docker:

📦 The chef ships the entire kitchen setup.

Now every burger tastes exactly the same, no matter where it’s made.

That’s why developers love Docker ❤️

Write once.
Run anywhere.

No more:
😤 “It works on my machine.”

Only:
✅ “It works everywhere.” #Docker #WebDevelopment #Programming #TechExplained

If you’re learning web development, save this 👇

Tanya Jha — Wed, 24 Jun 2026 17:45:03 +0000

📚 MDN Docs — Best web development documentation

🎨 Figma — UI/UX design & prototyping

💻 FreeCodeCamp — Free coding courses

🔥 Frontend Mentor — Real-world project practice

☁️ GitHub Student Pack — Free developer tools & perks

Great developers aren’t built by expensive courses, but by consistent practice. 🚀

WebDevelopment #Coding #100DaysOfCode

What is a Webhook. Explained the way I wish someone had told me.

Tanya Jha — Wed, 10 Jun 2026 13:09:35 +0000

When I first heard the word webhook, I imagined some scary backend magic 😭

But it’s actually one of those concepts that sounds harder than it is.

Imagine this:

You’re waiting for your crush to reply.

Option 1: You open WhatsApp every 30 seconds.

Seen? No.
Seen now? No.
Now?? Still no.

That’s like an API.

You keep asking:
“Any update?”
“Any update?”
“Any update?”

Option 2: You close the app and continue your life.

Then suddenly:
✨ ding
New message.

You didn’t ask.
You got notified.
That’s a webhook.

Webhook = “Don’t keep checking. I’ll tell you when something happens.”

Real life examples:

💳 You make a payment → payment successful → website gets notified

📦 Your package gets delivered → app automatically updates status

📧 Someone signs up → welcome email gets sent instantly

🛒 You place an order → confirmation arrives automatically

Tiny code example:

Someone buys a hoodie.

Store receives:

POST /order-confirmed
{
“order”: “#1042”,
“status”: “paid”
}

Store instantly shows: ✅ Order Confirmed

No refreshing.
No checking again and again.

So the easiest difference:

API → “Are we there yet?”
Webhook → “I’ll let you know when we arrive.”

And suddenly webhook sounds way less scary 🙂

What is an API? Explained the way I wish someone had told me

Tanya Jha — Tue, 09 Jun 2026 19:37:04 +0000

When I first started coding, people kept saying "API" everywhere.
Tutorials → API
Projects → API
Job descriptions → API

And I kept thinking, okay but WHAT EVEN IS IT 😭
Everyone explained it in complicated words, so I just nodded and moved on.

If you're confused too : keep reading. This will finally make sense.

Think of a restaurant 🍽️

You sit at the table and order food
You don't walk into the kitchen and cook it yourself
You tell the waiter → waiter goes to the kitchen → brings food back

That waiter is the API.

you - your app
waiter - api
kitchen - another company's system

The API takes your request, goes to get what you need, and brings back the answer. That's the whole job.

Where do you actually see APIs in real life? 👀

☁️ Weather app → asks a weather service for today's weather
🔐 "Login with Google" → website asks Google to confirm who you are
🗺️ Swiggy / Uber maps → uses Google Maps API to show your location
💳 Online payments → Razorpay / Stripe API processes the transaction

Once you know what an API is, you'll start seeing them everywhere.

What does it look like in code? 💻

You open a weather app and search Delhi.
Your app sends a request: GET /weather?city=Delhi
API replies: { "temperature": "34°C", "condition": "Sunny" }
Your app shows: 🌤️ Delhi → 34°C

See what happened?

Your app didn't calculate the weather.
It didn't store any weather data
It just asked someone who already had it

That's exactly what APIs do.

So what is an API? One line:
API = messenger between two applications.
You ask → API gets it → you receive the answer.

That's genuinely it. 🙂

I'm learning in public and writing about everything that confused me as a beginner. Follow if you want more of this 👋