Yaushe za ka yi amfani da Kafka (kuma yaushe ba)?

Question

IT Interview Practice · Accepted Answer

Kafka yana da ƙarfi amma **ba koyaushe kayan aiki dace ba** — yana da kyau don matsakaicin adadi na abubuwan da suka faru na streaming, jere-jere, da tsarin da ake tunawa da abubuwan da suka faru, amma yana ƙara iyaka aiki da kayan aiki masu sauƙi suka gudde. Fahimtar duk lokacin da Kafka ya dace (kuma duk lokacin da yana da wucewa) yana nuni da sauƙin hango.

## Yaushe Kafka ya dace

```text
✓ HIGH-VOLUME event streaming / data → millions of events; high throughput needs
✓ DATA PIPELINES → streaming data reliably between many systems (a data backbone)
✓ MULTIPLE CONSUMERS of the same stream → many independent consumers/groups read the data
✓ EVENT-DRIVEN architecture / event sourcing → events as a durable record
✓ REPLAY needed → re-read historical events
✓ REAL-TIME stream processing / analytics
→ Kafka shines for scale, streaming, retention, and multiple consumers
```

## Yaushe Kafka na iya zama abin gida

```text
⚠️ Kafka adds OPERATIONAL COMPLEXITY (a distributed cluster to run, tune, monitor):
  → SIMPLE messaging / task queues → a simpler queue (RabbitMQ, SQS, Redis) may suffice
  → LOW volume → Kafka's scale is unneeded; simpler tools are easier
  → request/REPLY, complex routing → traditional queues fit better
  → just need a basic background job queue → don't reach for Kafka
→ don't add Kafka's complexity if you don't need its capabilities (YAGNI)
```

## Zaɓi

```text
✓ Use Kafka when you NEED its strengths (scale, streaming, retention, replay, many consumers)
✓ Use simpler tools (RabbitMQ, SQS, Redis, a database) when those suffice
✓ Consider MANAGED Kafka (Confluent, MSK) to reduce operational burden if you do use it
→ match the tool to the actual requirements, not hype
```

## Me ya sa haka ya maɗi

Fahimtar duk lokacin da za ka yi amfani da Kafka (kuma duk lokacin da ba za ka yi ba) yana da ƙima saboda **Kafka yana da ƙarfi amma yana ƙara iyaka**, don haka hango na yi amfani da shi daidai ya maɗi don yanke shawara masu kyau na gida.

Kafka yana da kyau a wani ƙari amma ba babbar maganin gaba daya ba, kuma fahimtar duk lokacin da ya dace watanda duk lokacin da yana da wucewa yana nuni da hango da matashi.

Fahimtar **duk lokacin da Kafka ya dace** — matsakaicin adadi na abubuwan da suka faru na streaming, jere-jere na bayanai (baba-baba na bayanai), masu carowa masu yawa na jere guda, gida da ake tunawa da abubuwan da suka faru kuma tushen abubuwan da suka faru, buƙatun sake gabatarwa, kuma aiki na streaming na gaida — yana bayyana inda ƙarfin Kafka (sikeli, streaming, ajiya, masu carowa masu yawa) ya sa shi ya zama zaɓi dace.

Da mahimmanci, fahimtar **duk lokacin da Kafka na iya zama abin gida** yana da mahimmanci da dum: Kafka yana ƙara girma **iyaka aiki** (tsarin da aka rarraba a aiki, tuni, da sa ido), don haka ga sauki maganganu ko jere-jere na waje, ƙarƙashin adadi, buƙatu/amsa, ko sauƙi aiki-jere na baba-baba, **sauƙi kayan aiki (RabbitMQ, SQS, Redis) sau da yawa suna ya isa kuma suna da sauƙi** — kuma ƙara girma iyaka da Kafka lokacin da ba ka buƙata ƙarfin sa ba shine fusilli kai (YAGNI).

Dan wannan daidaitaccen gani — sanin ƙarfin Kafka amma kuma harajinsa kuma cewa sauƙi kayan aiki sau da yawa suna dace — yana da mahimmanci saboda Kafka sau da yawa ana ɗora shi saboda ita ba buƙata ba.

Fahimtar yadda za ka **zaɓi** — amfani da Kafka lokacin da ka buƙata ƙarfinsa (sikeli, streaming, ajiya, sake gabatarwa, masu carowa masu yawa), amfani da sauƙi kayan aiki lokacin da suke isa, da la'akari da Kafka mai jiya don gaskiya iyaka lokacin da ka amfani da shi — yana nuni da daidaita kayan aiki zuwa buƙatun gida ne kawai ba hype ba.

Tunda Kafka yana da ƙarfi amma yana ƙara iyaka aiki (don haka ba koyaushe kayan aiki dace ba) kuma fahimtar duk lokacin da ya dace (ƙarfinsa) watanda duk lokacin da sauƙi kayan aiki suna ya isa (guje watsi da fusilli kai) yana nuni da sauƙin hango masu kyau, kuma tunda wannan yana sanar wa shawara masu kyau na gida, fahimtar duk lokacin da za ka yi amfani da Kafka yana da ƙima, ilimin da ake tattaunawa a jiya — mahimmaci don hango na yi amfani da Kafka daidai (lokacin da ƙarfinsa ana buƙata) watanda sauƙi kayan aiki (lokacin da suke ya isa), guje watsi da fusilli kai na ƙara girma iyaka da Kafka da ba daidai ba, kuma nuni da sauƙin hango, hype-resistant na yanke shawara na gida.

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