Menene alamomin gida gida guda hudu na sa'a?

Question

Accepted Answer

Daga littafin SRE na Google, alamomin gida gida guda hudu su ne **jinkali, zafin jari, kuskure, da ƙarni**. Idan kuna iya auna abubuwa hudu kawai game da tsarin da ake fuskantar mai amfani, auna waɗannan — tare da juna suna kama yawancin matsaloli.

## Alamomin gida gida guda hudu

```text
LATENCY     how long a request takes
            → split SUCCESSFUL vs FAILED latency (a fast 500 isn't "fast")
            → track percentiles (p50/p95/p99), not averages

TRAFFIC     how much demand the system is under
            → requests/sec, transactions/sec, concurrent sessions

ERRORS      rate of failing requests
            → explicit (HTTP 500) and implicit (wrong content, too slow)

SATURATION  how "full" the system is — its most constrained resource
            → CPU, memory, I/O, queue depth; a leading indicator of trouble
```

## Dalilin da waɗannan gida gida guda hudu ke rufe yawancin matsaloli

Jinkali da kuskure su ne abin da mai amfani **ya ji kai tsaye**. Zafin jari yana bayyana **yanayin kuzari** (jinkali spike ajiye lokacin zafin jari na 10x yana nufin wani abu daban fiye da ɗaya a tushen). Ƙarni shi ne **alamar gaba** — yana tashi kafin jinkali da kuskure, yana ba ka gargadi kafin mai amfani ya jiya.

```text
saturation climbs → latency rises → errors appear → users complain
     ^ warning here, while there's still time to act
```

## Bambanci da USE da RED

Alamomin gida gida guda hudu su ne ɗaya daga framewks guda uku masu alaƙa; suna damje sosai kuma suna zabi tilastai mahimmanci daban-daban daga kusurwoyi daban-daban.

```text
GOLDEN  latency, traffic, errors, saturation   → user-facing services (general)
RED     Rate, Errors, Duration                 → request-driven services (a subset)
USE     Utilization, Saturation, Errors        → resources/infra (per device)
```

RED shine alamomin gida gida guda hudu minus ƙarni, wanda ake nuni a ƙirja; USE shi ne tushen abu-aiki (yi amfani da shi ga kowane faili, NIC, CPU). Yi amfani da RED ga ayyukan jiya, USE ga hardware, alamomin gida gida guda hudu azaman tushen gaba.

## Dalilin da ya dace

Sa'a abubuwa duka yana haifar da rikici da buɓcewa; sa'a ba a abubuwa ko akwai hakan ba yana barin ku tashi a sama ba. Alamomin gida gida guda hudu su ne saituwar ƙaramin saiti da ya tabbatar cewa yana haɗe dashboard da gargadiya ga gogaron mai amfani yayin da yana ba da hoto game da ƙarni farko — don haka kuna samun gargadi kafin hakamar bakin waje a maimakon bincike bayan ta faru.