How can you ensure atomicity (all-or-nothing) when performing composite operations across multiple resources?

hard📝 Application Q9 of 15

Rest API - Advanced Patterns

AUse GET method for all operations.

BUse transactions or rollback support provided by the API server.

CSend each operation as a separate HTTP request.

DInclude a delay between operations in the composite request.

Step-by-Step Solution

Solution:

Step 1: Understand atomicity in composite operations
Atomicity means either all operations succeed or none do, requiring transaction or rollback support.
Step 2: Evaluate options
Only Use transactions or rollback support provided by the API server. describes this; sending separate requests or using GET does not guarantee atomicity; delays do not affect atomicity.
Final Answer:
Use transactions or rollback support provided by the API server. -> Option B
Quick Check:
Atomicity needs transactions = C [OK]

Quick Trick: Atomic composite ops need server-side transaction support [OK]

Common Mistakes:

MISTAKES

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