🎯 Goal of the next phase

You will:

• Understand Exchange → Queue → Binding
• Send a message without writing code
• Visually see messages flow in RabbitMQ UI

This builds the mental model before code.

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✅ STEP 1: Open RabbitMQ UI

👉 http://127.0.0.1:15672 Login:

guest / guest

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✅ STEP 2: Create an Exchange

1. Go to Exchanges tab
2. Click Add a new exchange
3. Fill:

Field	Value
Name	order_exchange
Type	direct
Durable	✅
Auto delete	❌
Internal	❌

1. Click Add exchange

📌 Why direct? Exact routing → easiest to understand first.

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✅ STEP 3: Create a Queue

1. Go to Queues and Streams
2. Click Add a new queue
3. Fill:

Field	Value
Name	order_queue
Durable	✅
Auto delete	❌
Exclusive	❌

1. Click Add queue

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✅ STEP 4: Bind Exchange → Queue

1. Open order_exchange
2. Scroll to Bindings
3. Under Add binding from this exchange
4. Fill:

Field	Value
To queue	order_queue
Routing key	order.created

1. Click Bind

📌 This means:

routingKey === "order.created" → goes to order_queue

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✅ STEP 5: Publish a Test Message (UI)

1. Open Exchanges → order_exchange
2. Scroll to Publish message
3. Fill:

Field	Value
Routing key	order.created
Payload	{ "orderId": 1, "item": "Laptop" }
Payload encoding	string

1. Click Publish message

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✅ STEP 6: Verify Message in Queue

1. Go to Queues
2. Click order_queue

You should see:

Ready: 1

🎉 Message is safely stored in queue

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✅ STEP 7: Consume Message from UI (simulate consumer)

1. Inside order_queue
2. Scroll to Get messages

3. Set:

4. Messages: 1

5. Ack mode: Manual ack
6. Click Get message(s)

You’ll see your message body.

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🧠 What you just learned (important)

Concept	You did
Exchange	Created
Queue	Created
Binding	Connected
Routing key	Used
Producer	UI publish
Consumer	UI get
Ack	Manual

This is exactly how real systems work, just without code.

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