Ta yaya ake nazarin tasirin canjin architecture?

Question

IT Interview Practice · Accepted Answer

Yi nazarin canji ta bin tasirinsa ta **buƙatu, yarjejeniyoyi, bayanai da dogaron gudanarwa**. Fara da ainihin bambanci tsakanin tsohuwar buƙata da sabuwa; “tallafa wa girma” ko “maida shi real time” ba su da takamaimai domin tantancewa cikin aminci.

## Bi taswirar dogaro

```text
[Changed requirement] --> [Affected business flow]
                                  |
                         [Interface contracts]
                           /              \
                    [Consumers]       [Data/state]
                           \              /
                       [Operations + tests]
```

Yi amfani da rikodin bin diddigi da kundin interfaces a matsayin farko, sannan tabbatar da su da deployed configuration, zirga-zirgar gaske da ilimin masu tsarin. Takardu na iya rasa batch jobs, exports ko masu karɓar bayanai na wata ƙungiya.

## Misali: ganin sabbin bayanan stock da sauri

A ɗauka yarjejeniyar farko tana sabunta stock kowane awa, amma sabuwar buƙata tana son gani cikin minti guda. Fayyaɗa ko hakan ya haɗa lokacin katsewa da ko masu amfani suna son ƙiyasta ne ko tabbatacciyar reservation.

Duba ikon ERP na fitar da canje-canje, API quotas na tsarin da ke gaba, tsawon rayuwar cache, alamomin sabuntar bayanai da zatonnin rahotanni. Idan tushen yana sabuntawa sau ɗaya a awa kawai, sauya refresh interval na shafin ba zai cika buƙata ba. Nazarin na iya nuna dole a canja ikon tushen ko burin kasuwanci.

## Samar da tantancewa da za a aiwatar

- Jera sassan da suka shafa da masu alhaki, har da masu amfani da bayanai ta kaikaice.
- Ware canje-canjen da suke dacewa da tsohon tsari daga canjin contract ko data model da yake buƙatar rollout tare.
- Gano shaidar da canji ya rusa, kamar tsoffin load tests ko ƙiyasin farfaɗowa.
- Ba da shawarar gwaje-gwaje ga abin da ba a sani ba, da ma'aunin shawara maimakon zato mai fata.
- Fayyace matakan migration, rollout da rollback, har da abin da zai faru da bayanan da aka rubuta cikin sabon format.

Rollback yana buƙatar kulawa ta musamman: mayar da application code baya ba lallai ya soke canjin bayanai ko tasirin waje ba. Idan reverse migration ba ta da aminci, bayyana shirin farfaɗowa ta ci gaba da kuɗin gudanarwarsa.

## Alamar ƙwarewa a hira

Gabatar da zaɓuɓɓuka, kewayon ƙoƙari tare da zato da sakamakon kasuwanci na kowace hanya. Mai tsara tsari mai ƙwarewa zai iya bayyana dalilin da sakamakon da ake nema yake buƙatar canji mai faɗi, kuma ya ba da ƙaramin sakamako mai yiwuwa da iyakoki a fili.

Bi taswirar dogaro

Misali: ganin sabbin bayanan stock da sauri

Samar da tantancewa da za a aiwatar

Alamar ƙwarewa a hira

Tambayoyi masu alaƙa