[Solved] Given the following event log stored as tuples (timestamp, event):[(1, 'create'), (3, 'update'), (2, 'update'), (4, 'delete')]What is the correct order of events during replay? | Microservices

Microservices - Event-Driven Architecture

Given the following event log stored as tuples (timestamp, event):
[(1, 'create'), (3, 'update'), (2, 'update'), (4, 'delete')]
What is the correct order of events during replay?

A[('update'), ('create'), ('delete'), ('update')]

B[('delete'), ('update'), ('create'), ('update')]

C[('create'), ('update'), ('update'), ('delete')]

D[('update'), ('delete'), ('create'), ('update')]

Step-by-Step Solution

Solution:

Step 1: Sort events by timestamp
Sort the list by the first element (timestamp): 1, 2, 3, 4.
Step 2: Extract event names in sorted order
Events in order: 'create' (1), 'update' (2), 'update' (3), 'delete' (4).
Final Answer:
[('create'), ('update'), ('update'), ('delete')] -> Option C
Quick Check:
Sorted timestamps = 1,2,3,4 [OK]

Quick Trick: Sort by timestamp, then list events in that order [OK]

Common Mistakes:

MISTAKES

Ignoring timestamp order
Mixing event sequence
Assuming original list order is correct

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More Microservices Quizzes

Given the following event log stored as tuples (timestamp, event):

Step 1: Sort events by timestamp

Step 2: Extract event names in sorted order

Final Answer:

Quick Check:

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