Online worksheet ยท 1 of 4
A retry should not duplicate the effect - Online practice 1
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
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Invented submission service, initially empty. Request key K1 with body 'Answer 1' saves submission S1, but its response is lost. Retry the SAME key and body twice. Then send the same key with body 'Changed 1'. Policy: identical key/body returns the original result; key reuse with different body is a conflict, not an overwrite.
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- After the original K1 request and two identical retries, how many submissions exist and which identity is returned?
- What should K1 with body 'Changed 1' do?
- Why does a timeout not justify blindly creating a new record?
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