Yadda kuke gabatarwa da babbar canji da ƙauna?

Question

Accepted Answer

Manya canje-canje, sabun bakin bakin bayani, sabun tsari, sabun dandali, suna da babbar haɗari saboda sun taɓa kome kuma ba su ba sakamako mai gida ga mai amfani har sai an gama. Hanya mai ƙauna ita ce **ɗaiɗai da juyewa**, ba kudu kudu gida ba. Kuna canja tare da guntun da za a iya tallace da mayar da baya.

## Karamin aiki mai ƙauna

```text
1. Know WHY — a migration with no clear payoff isn't worth the risk.
2. Migrate INCREMENTALLY — never flip everything at once.
3. Run OLD and NEW in parallel — strangler-fig pattern.
4. Use feature flags / DUAL WRITES to shift traffic gradually.
5. VERIFY continuously — compare old vs. new outputs (shadow traffic).
6. Keep a ROLLBACK path at every step.
7. Clean up the old system only AFTER the new one is proven.
```

## Tsarin kafin shuni

Tuka da tsohuwar tsari kuma juyar da guntun aikin zuwa sabon ɗaya guntu-guntu, har sai tsohuwar tsari ya cika "kunkuri" kuma ana iya buƙata. A waje daban kuna da aiki na gida kuma hanyar baya. Wannan shine mafi mahimmin dabarun canja-canja.

## Gajiya misali

Canja bakin bayani: rubuta biyu zuwa duka, cika bakin bayani na asali, karanta daga sabon DB don ƙaramin % na traffic, kwatanta sakamakon, tayar, kuma kawai sake labari tsohuwar DB bayan sauran daya ya yi aiki 100% kyau na lokaci.

## Wani matsalar

"Babbar sake rubuka" wanda ya gudu tsawon wata cikin ɓangare kuma gudu duka lokaci ɗaya. Wannan shine gida gida, kuna gano matalauki lokacin da muka sani, babu hanyar baya.

## Me ya sa ya mahimmi

Canje-canje sune inda jama'a ke ɗaukar manyan haɗarin da aka zance ba tare da gajiya ba, kuma babbar gudu gudu yana bugtowa jiya kuma jiya.

An ɗaiɗai juyewa, juyewaccen canja-canja ya juya gamble na ɗankali-gida zuwa jeri na ƙananan, ƙauna, tantance matakin.