REST vs GraphQL vs gRPC — yaushe za ka zaɓi kowanne?

Question

IT Interview Practice · Accepted Answer

Waɗannan paradigms uku ne daban na API, kowanne an inganta shi ga ƙuntatawa daban. Babu wanda ya yi nasara a duniya baki ɗaya — madaidaicin zaɓi ya dogara da **mai amfani, siffar bayanai, da network**.

## Su ukun a kallo ɗaya

```text
           REST                 GraphQL              gRPC
Style      resources + HTTP     single query graph   RPC (call methods)
Transport  HTTP/1.1, JSON       HTTP, JSON           HTTP/2, Protobuf (binary)
Fetching   fixed endpoints      client picks fields  fixed methods
Schema     optional (OpenAPI)   strong, typed        strong, .proto
Browser    native, cacheable    needs client lib     limited (needs proxy)
```

## REST

Mai mai da hankali kan resource a kan HTTP mai sauƙi. **Zaɓi shi** ga public APIs, sabis na CRUD, da duk abin da ke amfana daga HTTP caching, yaɗuwa, da sauƙi. Rauninsa su ne **over-fetching** (kana samun cikakken `/users/42` ko da kana bukatar field ɗaya) da **under-fetching** (matsalar `N+1`: ɗauko user, sa'an nan loop don ɗauko kowane order).

```http
GET /users/42            → the whole user
GET /users/42/orders     → a second round trip
```

## GraphQL

Endpoint guda inda **client ya fayyace daidai abin da yake so** a query ɗaya, yana warware over/under-fetching. **Zaɓi shi** ga frontends masu wadata (musamman mobile, inda round trips ke da tsada) da sa'ad da clients da yawa ke bukatar siffofi daban na bayanai iri ɗaya.

```text
POST /graphql
query { user(id: 42) { name orders { total } } }   ← one round trip, exact fields
```
Trade-offs: HTTP caching ya fi wahala (komai `POST` ne zuwa `/graphql`), kuma resolver mara hankali zai iya ɓoye queries `N+1` masu tsada na database.

## gRPC

RPC na contract-first ta amfani da **Protobuf** a kan **HTTP/2**. Binary kuma multiplexed, don haka yana da sauri kuma matse tare da tallafin streaming. **Zaɓi shi** ga sadarwar **service-to-service na cikin gida** a backend na microservices inda aiki (performance) da tsananin typing ke da muhimmanci. Rauni: tallafin browser mara kyau (yana bukatar proxy kamar grpc-web) kuma mutum ba ya iya karantawa.

## Zaɓi

```text
Public API, CRUD, caching, wide reach   → REST
Complex/varied frontend data needs      → GraphQL
High-performance internal microservices → gRPC
(Real systems mix them: REST/GraphQL at the edge, gRPC between services.)
```

## Me ya sa yake da muhimmanci

A matakin senior, masu hira ba su damu da ma'anoni ba sosai, sun fi damu da ko za ka iya **tabbatar da zaɓi bisa ƙuntatawa** — wannan tambaya da gaske ita ce "za ka iya daidaita fasaha da matsala maimakon bin hype?" Amsoshi mafi ƙarfi suna dogara kan zafin da kowanne ke warware: GraphQL yana wanzu don kashe over/under-fetching ga frontends masu buƙata, gRPC yana wanzu don sa kiran service na cikin gida su zama masu sauri kuma masu tsananin typing, kuma REST yana kasancewa default domin HTTP caching, tooling, da sanin duniya baki ɗaya fa'idodi ne masu girma na aikace ga public da APIs irin na CRUD. Muhimmanci, injiniya senior yana lura cewa **ba ko-daya-daya ba ne** — gine-gine na kowa shine REST ko GraphQL a gefen public da gRPC tsakanin microservices na backend — kuma yana ambaton trade-offs na zahiri (haɗarin caching da `N+1` na GraphQL, labarin browser mara ƙarfi na gRPC). Wannan tunani game da dacewa da farashi, ba ikon karanta abubuwan da ke ciki ba, ita ce siginar.

Su ukun a kallo ɗaya

REST

GraphQL

gRPC

Zaɓi

Me ya sa yake da muhimmanci

Tambayoyi masu alaƙa