វេទិកាជ្រើសរើសបុគ្គលិកសម្រាប់កម្ពុជា — ការផ្គូផ្គងតាមអត្ថន័យរវាងបេក្ខជន និងក្រុមហ៊ុន ដំណើរការជ្រើសរើសពេញលេញ ការជជែក ការសម្ភាសន៍ និងកម្មវិធីបង្កើតប្រវត្តិរូបដោយ AI — លើសេវា NestJS ចំនួនប្រាំពីរ។
01 / បញ្ហា
Apsara Talent has to support two different conversations: candidates and companies finding each other, and a company moving an applicant from application to offer. It needs both without blurring them — and it has to match people on meaning rather than exact keywords, because “Full Stack Development” and “Backend Developer” describe overlapping people.
02 / ការសម្រេចចិត្តសំខាន់ៗ
ការសម្រេចចិត្ត 01
Recommendations combine weighted signals — career-scope similarity, skill overlap, and job-title similarity — with the semantic parts scored by pgvector cosine distance over an HNSW index, so related roles match even when they share no words.
តម្លៃដែលត្រូវលះបង់
Not every profile has an embedding yet, so each semantic signal falls back to exact overlap — results stay sensible, just less forgiving, until the vector exists.
ការសម្រេចចិត្ត 02
A gateway and six internal services — auth, users, jobs, chat, resumes, and notifications — talk over NestJS TCP transport and share one PostgreSQL schema and one contracts library.
តម្លៃដែលត្រូវលះបង់
The deployables are separate but the data is not: a change to a shared entity can touch several services at once, and the project map says so plainly rather than pretending otherwise.
ការសម្រេចចិត្ត 03
Every push runs a load phase against the readiness endpoint, which fans out to the database, Redis, and all six services. The p95 limit is 500 ms — about three times the worst of three measured runs.
តម្លៃដែលត្រូវលះបង់
Concurrency was cut from 20 to 5 after runner contention failed a release at 3.3% errors. A flaky gate gets rerun until it passes and stops meaning anything.
ការសម្រេចចិត្ត 04
Restoring the database from a Neon point-in-time branch is tested weekly and takes 3.7 seconds; rolling a single service back takes about two minutes, with a dry-run rollback planner in CI.
តម្លៃដែលត្រូវលះបង់
The point-in-time window is one day, so anything noticed later depends on the nightly off-site dump — written down in the runbook rather than discovered during an incident.
03 / លទ្ធផល
Deployed across Railway, Neon, Cloudflare R2, and Vercel, with Prometheus, Alertmanager, and Grafana watching it and a runbook for the failures that have already happened once. Roughly 1,700 commits across the API, web, and mobile repositories since January 2025.
04 / នៅខាងក្នុងផលិតផល
05 / បច្ចេកវិទ្យា
06 / ធនធានសាធារណៈ