Vokabilè teknik ak pwofesyonèl presi

Angle teknik la echwe, pa poutèt gramè a, men poutèt vèb vag yo. « We made the system better » ak « we reduced query latency by 40% » dekri menm travay la ak yon fòs konvenk ki konplètman diferan.

Vèb ki gen pwa teknik

Vag	Presi
make faster	optimise, accelerate, streamline
make smaller	reduce, compress, consolidate
fix	resolve, patch, mitigate
change	refactor, migrate, restructure
check	validate, verify, audit
set up	configure, provision, deploy
join together	integrate, consolidate, merge
find the cause	diagnose, trace, isolate

We isolated the bottleneck and refactored the query layer.

Ki jan pou dekri relasyon ant pati yo

Pou eksplike yon achitekti byen fò, ou bezwen yon ti repètwa vèb relasyon, e se egzakteman flou isit la ki fè yon eksplikasyon ki bon pou lòt rezon vin enkonprehansib :

• The API sits behind a load balancer.
• The service depends on the auth layer. · Nothing else relies on it.
• It talks to the database directly. (familye, men estanda)
• The queue decouples ingestion from processing.
• Sessions are backed by Redis.
• That module is responsible for validation.

Remake depend on ak rely on toulède pran on, alòske consist of pran of. Twa prepozisyon fiks moun souvan twonpe yo (kreyòl la di depann de, sa ki bay depend of pa kòrèk).

Ki jan pou dekri konpwomi yo

Diskisyon teknik yo se pou yon bon pati konpwomi, e angle gen yon lang prèt pou yo :

• There's a trade-off between speed and accuracy.
• We prioritised reliability over raw performance.
• That approach scales better, but at the cost of complexity.
• It's a reasonable compromise given the constraints.
• The downside is that it adds a dependency.

Ki jan pou nuanse afimasyon teknik yo

Egzajerasyon sape konfyans yon piblik teknik. Presizyon la gen presizyon degre sètitid la ladan l tou.

• This should reduce load significantly. (nou atann sa)
• It appears to be a race condition. (pwobab, men pa konfime)
• We suspect the issue originates in the cache layer.
• As far as we can tell, the data is consistent.

Konpare ak egzajerasyon : This will definitely fix it. Rarman li jistifye e li koute chè si l fo.

Ki jan pou eksplike kòz la

• The failure stems from an unhandled edge case.
• This was triggered by a schema change.
• The root cause turned out to be a timeout setting.
• These issues are symptomatic of a deeper design problem.

Lè yon bagay kase

Lang ensidan yo trè konvansyonèl, e move mo a egzajere oswa minimize sitiyasyon an :

Tèm	Sans
outage	totalman an pann
degradation	mache, men dousman oswa an pati
intermittent	echwe de tan en tan
regression	yon bagay ki te mache kase
workaround	solisyon pwovizwa pou kontoune
mitigation	redui konsekans yo, men pa elimine kòz la
rollback	retounen nan vèsyon anvan an
postmortem	analiz apre kou

We've mitigated the impact with a workaround; the root cause is still open. — fraz sa a di responsab ou egzakteman kote ou ye.

Ki jan pou estime anpil ak delè

• That's out of scope for this release.
• Roughly — ballpark — two weeks.
• We're seeing some scope creep.
• I'd want to spike on it before committing to an estimate.
• It's blocked on the API change.

Kantifikasyon

Estimasyon vag yo bese valè yon angle teknik ki bon pou lòt rezon.

• ❌ It got a lot faster.
• ✅ Latency dropped from 800 ms to roughly 200 ms.
• ✅ That's an improvement of around 75%.
• ✅ Error rates fell by an order of magnitude.

Presizyon ak sètitid se de levye ki separe. We reduced p99 latency by roughly 60%, though we haven't confirmed why se an menm tan presi e pridan jan sa dwe ye. Yon piblik teknik fè konfyans egzakteman nan konbinezon sa a, e li pa fè konfyans nan konbinezon opoze a : yon afimasyon asire san yon sèl chif.

Analiz yon ensidan

A : What are we seeing?

B : Intermittent 500s on checkout since about nine. It's degradation, not a full outage.

A : Do we know why?

B : Not yet. It appears to be connection-pool exhaustion, but that's a guess. We've rolled back the deploy as a mitigation and errors dropped by around 90%.

A : Good. Root cause can wait for the postmortem.

Chak afimasyon ak degre sètitid li make, yon chif ak bon mo a nan chak pozisyon.

Mete sa ou aprann nan a leprèv

Nan tès kap vini an, se presizyon ak bon nuans ki genyen, pa flou espektakilè a.