Menene ma'aunin, loguna, da alamomi, kuma yaushe kuke ɗauka ga kila ɗaya?

Question

Accepted Answer

Waɗannan su ne **ginshikin kin-bukatu gida**. Suna amsa tambayoyi daban-daban: ma'auni suna gaya muku **cewa** wani abu ba shi da daidai, loguna suna gaya muku **menene** ya faru, kuma alamomi suna gaya muku **ina** a cikin wani filin rarraba lokaci ko kuskure ya tafi.

## Ginshikin uku

```text
METRICS  aggregate numbers over time (counters, gauges, histograms)
         → cheap, low cardinality, great for trends & ALERTING
         → e.g. error rate = 2%, p99 latency = 800ms

LOGS     discrete, timestamped events with detail (often structured JSON)
         → rich context for DEBUGGING a specific request
         → e.g. {"level":"error","user":123,"msg":"payment declined"}

TRACES   the path of one request across services, with timing per span
         → shows latency BREAKDOWN and where a call fails
         → e.g. checkout 800ms = api 50ms + db 700ms + email 50ms
```

## Yaushe za ku ɗauka kila ɗaya — abubuwan tilas ɗaya

```text
1. METRIC alerts: "checkout p99 latency jumped to 2s"   → you know THERE's a problem
2. TRACE a slow request: 1.8s of 2s is spent in the inventory service
                                                        → you know WHERE it is
3. LOGS of the inventory service at that time: "slow query: missing index"
                                                        → you know WHAT happened
```

Ma'auni sun ɗaddada muku ga alamar ma'ana da tagar lokaci; alamomi suna ɗaddada shi zuwa hidima ko kira; loguna suna ba ainihin dalili. Tafiya kai tsaye zuwa loguna ba tare da ma'auni ba yana nufin nemo kulle.

## Farashin da cardinality

Ma'auni ana haɗa su, don haka suna kasua jiya har ma a girki — daidai don daɓu da abaɓara na koyaushe kuma gargajiyar. Loguna da alamomi suna kila abubuwan da suka faru kuma suna kuɗi mai tsada, don haka galibi sune **sampau** kuma ana buɗe su bisa bukatar a lokaci na ihe.

## Menene ka'ida maikaranta

Amfani da ɓata na ginshiki ya ɓata lokaci: ba za ku iya faɗakar akarin jiya a kan loguna marasa tsintsi ba (suna mawuyacin yawa, ana samu kuɗi da yawa), kuma ba za ku iya ɓata ido kan kadai kazo da ta dame daga ma'auni na haɗa ba. Sanin cewa ma'auni ya gano, alamomi sun kwatanta, kuma loguna suna bayyyana suna ba ku sauri, sakonnin hanya daga "wani abu ba shi da daidai" zuwa asali na kumburi.