[Solved] Consider this composite operation request:{"operations": [{"method": "PUT", "path": "/accounts/789", "body": {"balance": 500}}, {"method": "POST", "path": "/transactions", "body": {"accountId":... | Rest API

Rest API - Advanced Patterns

Consider this composite operation request:

{"operations": [{"method": "PUT", "path": "/accounts/789", "body": {"balance": 500}}, {"method": "POST", "path": "/transactions", "body": {"accountId": 789, "amount": -100}}]}

What is the expected outcome if both operations succeed?

AOnly the account balance is updated; the transaction is ignored.

BThe account balance is updated to 500, and a transaction of -100 is recorded.

CThe transaction is recorded, but the account balance remains unchanged.

DBoth operations fail because they modify the same resource.

Step-by-Step Solution

Solution:

Step 1: Analyze the operations
The first operation updates the account balance to 500. The second creates a transaction deducting 100 from the account.
Step 2: Understand composite operation behavior
If both succeed, both changes apply: balance update and transaction creation.
Final Answer:
The account balance is updated to 500, and a transaction of -100 is recorded. -> Option B
Quick Check:
Both operations succeed and apply changes [OK]

Quick Trick: If all ops succeed, all changes apply atomically [OK]

Common Mistakes:

MISTAKES

Assuming partial success applies only one operation
Believing operations on related resources conflict automatically
Thinking composite operations rollback automatically on success

Master "Advanced Patterns" in Rest API

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

More Rest API Quizzes

Consider this composite operation request:

Step 1: Analyze the operations

Step 2: Understand composite operation behavior

Final Answer:

Quick Check:

Want More Practice?