agent_coder
b9f3de80f5
The metrics INFRA is already deployed (VictoriaMetrics scraping docmost:9464,
Grafana dashboards, alerts) with a target `gitmost-app` that is red because the
app half didn't exist. This is that half. The contract (metric names, port,
table, endpoint) is FIXED by the deployed infra and matched exactly.
Server (prom-client):
- A bare node:http `/metrics` server on METRICS_PORT (default 9464), SEPARATE
from the Fastify :3000 listener so /metrics never exists publicly; the whole
subsystem is OFF when METRICS_PORT is unset.
- collectDefaultMetrics() + http_request_duration_seconds{method,route,status}
via a Fastify onResponse hook using the ROUTE TEMPLATE (req.routeOptions.url,
never the raw URL — bounded cardinality; 404 -> "unknown"), EXCLUDING SSE/
streaming responses (would record the connection lifetime and poison p95).
- db_query_duration_seconds (Kysely log callback, labelled by the leading SQL
token), bullmq_queue_depth{queue} (getJobCounts every 15s) +
bullmq_job_duration_seconds{queue} (worker completed/failed),
collab_store_duration_seconds (around onStoreDocument).
- POST /api/telemetry/vitals — PUBLIC (sendBeacon) but IP-throttled; ~16KB body
cap, <=50 events/batch, metric-name + rating whitelist, attr truncated to 120
chars, batch insert; malformed/foreign/oversized silently dropped and 200'd (no
browser retry). New migration `client_metrics` (schema byte-identical to the
contract, both indexes, conditional grafana_ro GRANT; no app-side retention —
the maintenance container prunes >90d).
Client (web-vitals):
- initVitals() decides sampling ONCE per session (25%, sessionStorage) BEFORE
subscribing; onINP/onLCP/onCLS/onTTFB (attribution) buffered + flushed via
navigator.sendBeacon on visibilitychange:hidden and a timer (not fetch-per-
metric). Custom: editor_tx_ms (dispatchTransaction sync-part timer, >8ms, with
doc_size), page_open_ms, longtask_ms. Route labels are templates only; no
titles/slugs/text.
Gate: server + client tsc 0, frozen install 0 (added prom-client + web-vitals +
regenerated the lock), server metrics/vitals tests 11, client route-template 5,
and the migration verified valid against real Postgres.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A progressive Node.js framework for building efficient and scalable server-side applications.
Description
Nest framework TypeScript starter repository.
Installation
$ npm install
Running the app
# development
$ npm run start
# watch mode
$ npm run start:dev
# production mode
$ npm run start:prod
Migrations
# This creates a new empty migration file named 'init'
$ npm run migration:create --name=init
# Generates 'init' migration file from existing entities to update the database schema
$ npm run migration:generate --name=init
# Runs all pending migrations to update the database schema
$ npm run migration:run
# Reverts the last executed migration
$ npm run migration:revert
# Reverts all migrations
$ npm run migration:revert
# Shows the list of executed and pending migrations
$ npm run migration:show
## Test
```bash
# unit tests
$ npm run test
# e2e tests
$ npm run test:e2e
# test coverage
$ npm run test:cov
Support
Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please read more here.
Stay in touch
- Author - Kamil Myśliwiec
- Website - https://nestjs.com
- Twitter - @nestframework
License
Nest is MIT licensed.