Jiyya neman/amsa (RPC) ke aiki a cikin RabbitMQ?

Question

IT Interview Practice · Accepted Answer

**Jiyya neman/amsa (RPC)** akan RabbitMQ yana ba da damar jerin sadarwar saita-amsa ta amfani da saƙo — client yana aika jiyya kuma yana karba amsa ta wajin jerin amsa, ta amfani da **Correlation ID** don daidaita amasuwa ga jiyana. Shi ne tsarin da ke da amfani don kiran aiki-zuwa-aiki.

## Jiyya neman/amsa na RPC ke aiki a cikin RabbitMQ

```text
RPC pattern over messaging:
  1. CLIENT sends a REQUEST message, including:
     → a REPLY-TO queue (where the response should go)
     → a CORRELATION ID (unique ID to match the response to this request)
  2. SERVER (consumer) processes the request and sends a RESPONSE to the reply-to queue,
     including the same CORRELATION ID
  3. CLIENT receives the response from its reply queue, matches it by CORRELATION ID →
     pairs the response with the original request
→ request-response over async messaging
```

## Dalilin da Correlation IDs ke da mahimmanci

```text
→ a client may have MANY outstanding requests on one reply queue → responses arrive mixed
→ the CORRELATION ID matches each response to its request (which response is for which call)
→ without it, the client couldn't tell which response answers which request
```

## Tunani

```text
✓ TIMEOUTS → the client must handle no-response (the server may be down/slow) → don't wait
  forever
✓ Reply queue → a per-client (often exclusive) reply queue, or a direct-reply-to feature
✓ RPC over messaging adds latency vs direct calls → consider if async is acceptable
⚠️ couples client and server timing (synchronous-style) → sometimes async messaging is
  better than RPC
```

## Dalilin da yake da mahimmanci

Sanin jiyya neman/amsa (RPC) ke aiki a cikin RabbitMQ yana da kima saboda shi ne **tsarin saƙon da ke da amfani don sadarwar aiki-zuwa-aiki**, haka ne ya zama sanin da ya dace don wannan buƙatu.

RPC akan RabbitMQ yana ba da damar jerin sadarwar saita-amsa ta amfani da saƙo, da amfani yayin da aiki ke bukatan amasuwa.

Sanin **jiyya ke aiki** — client yana aika jiyya tare da **wajin jerin amsa** (inda amsa ta je) da **Correlation ID** (don daidaita amsa), saruruwa yana aiki kuma yana aika amsa zuwa jerin amsa tare da Correlation ID iri daya, kuma client yana karba kuma yana daidaita amsa ta Correlation ID — haka a gida a bayyana hanyar jiyya-amsa akan saƙon asynchronous.

Sanin **dalilin da Correlation IDs ke da mahimmanci** shine hasashe na mabuɗi: tun da client na iya samun jiyya da yawa a jerin amsa ɗaya (tare da amasuwa suna iso ba barkaci), **Correlation ID yana daidaita kowane amsa ga jiyyarsa** (yana gaya wa client wane amsa ke amsa wane kira) — ba tare da shi ba, client ba zai iya daidaita amasuwa zuwa jiyana ba, yana sa Correlation IDs suke mahimmanci ga tsarin RPC.

Sanin **tunani** — sarrafawa **wutsiya** (client dole ne ya sarraf babu-amsa tun da saruruwa na iya kasua ko jitu, ba tare da jira har abada ba), sautin jerin amsa (jerin exclusive per-client ko direct-reply-to), jinayar jini RPC ke ƙara da gida gida-kira, da gongina cewa RPC yana ɗaure lokacin client da saruruwa (haka wani lokaci saƙon asynchronous ya fi kyau fiye da jiyya-amsa kamari RPC) — haka a nuna tunani game da amfani da tsarin.

Sanin RPC akan RabbitMQ yana ba da hanya don yin sadarwar jiyya-amsa ta wurin saƙo (tare da rashin ɗaure kuma amfani da saƙon jeren gida), mai amfani don wasu wuraren aiki-zuwa-aiki, yayin da kuma gane a lokacin asynchronous saƙon na iya fi kyau fiye da RPC-kamari saita sadarwa.

Tun da jiyya neman/amsa (RPC) akan RabbitMQ ne tsarin da ke da amfani don sadarwar jiyya-amsa aiki-zuwa-aiki (ta amfani da jiren amsa da Correlation IDs) kuma sanin jiyya ke aiki da tunani nesa yana dace don wannan buƙatu, sanin jiyya neman/amsa (RPC) ke aiki a cikin RabbitMQ yana da kima, sanin RabbitMQ da gaggawa — tsarin mai amfani don sadarwar jiyya-amsa akan saƙo (tare da Correlation IDs yana daidaita amasuwa zuwa jiyana), dace don kiran aiki-zuwa-aiki, kuma nuna tunani na jiyya-amsa saƙon kamari asynchronous saita sadarwa jirgin saita.

Jiyya neman/amsa na RPC ke aiki a cikin RabbitMQ

Dalilin da Correlation IDs ke da mahimmanci

Tunani

Dalilin da yake da mahimmanci

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