usenet-indexer/deploy/compose.yaml

# Voyager 2 on homelab (deploy/README.md). deploy.sh copies this file to the
# deployment root (/mnt/bulk/usenet-rebuild), next to src/ (the code at the
# deployed commit), .env (credentials, tuning), pg/ and spool/; run
# `docker compose` there. Nothing is shared with voyager 1's compose project.
name: usenet-rebuild

x-app: &app
  image: usenet-rebuild:latest
  build:
    context: ./src
    target: app
  restart: unless-stopped
  env_file: .env
  environment: &app-env
    NODE_ENV: production
    HOST: 0.0.0.0
    PORT: 3334
    DB_HOST: postgres
    DB_PORT: 5432
    APP_URL: http://web:3334
    SPOOL_DIR: /spool
    # Stored XOVER chunks of the ranges marked `capture` (the grouping sweeps' corpus, HDD; app/services/corpus.ts).
    CORPUS_DIR: /corpus
  volumes:
    - ./spool:/spool
    - ./corpus:/corpus
  stop_grace_period: 60s
  depends_on:
    migrate:
      condition: service_completed_successfully

services:
  postgres:
    image: postgres:17
    restart: unless-stopped
    environment:
      POSTGRES_USER: ${DB_USER}
      POSTGRES_PASSWORD: ${DB_PASSWORD}
      POSTGRES_DB: ${DB_DATABASE}
    volumes:
      # Chunks (write-once payloads) on the HDD; the catalog in tablespace
      # nvme, the database's default_tablespace (LOG.md 2026-10-09 (14)).
      - ./pg:/var/lib/postgresql/data
      - ${PG_NVME_DIR:-/var/lib/usenet-rebuild-catalog}:/var/lib/postgresql/nvme
      # The WAL on the NVMe too: data/pg_wal is a symlink to /var/lib/postgresql/wal. On the HDD every commit
      # waited on it (WALWrite, 56–70 ms a write with the HDD 100% busy; LOG.md 2026-10-13 (43)).
      - ${PG_WAL_DIR:-/var/lib/usenet-rebuild-wal}:/var/lib/postgresql/wal
    # synchronous_commit = off is set with ALTER SYSTEM (postgresql.auto.conf in the data dir).
    # Memory for 62 GiB of RAM shared with other services (LOG.md 2026-10-16 (69)): the catalog's hot part in
    # shared_buffers, the planner told the OS caches the rest; random_page_cost for the NVMe (the HDD tablespace
    # pg_default keeps 4: ALTER TABLESPACE … SET (random_page_cost = 4)).
    command:
      - postgres
      - -c
      - shared_preload_libraries=pg_stat_statements
      - -c
      - shared_buffers=${PG_SHARED_BUFFERS:-8GB}
      - -c
      - effective_cache_size=${PG_EFFECTIVE_CACHE_SIZE:-32GB}
      - -c
      - random_page_cost=1.1
      - -c
      - work_mem=16MB
      - -c
      - maintenance_work_mem=1GB
      - -c
      - max_wal_size=8GB
      - -c
      - checkpoint_timeout=15min
      - -c
      - wal_buffers=64MB
    # Parallel hash joins' shared memory: 1g failed with "could not resize shared memory segment" (LOG.md 2026-10-16 (61)).
    shm_size: 2g
    stop_grace_period: 120s
    healthcheck:
      test: ['CMD-SHELL', 'pg_isready -U "$$POSTGRES_USER" -d "$$POSTGRES_DB"']
      interval: 5s
      retries: 30

  migrate:
    <<: *app
    restart: 'no'
    command: ['node', 'ace', 'migration:run', '--force']
    volumes: []
    depends_on:
      postgres:
        condition: service_healthy

  # Catalog API, Newznab and the web interface.
  web:
    <<: *app
    command: ['node', 'bin/server.js']
    environment:
      <<: *app-env
      HTTP_ROUTES: public
    ports:
      - '3334:3334'

  # The edge workers' API (leases, streams, batches), apart from the web
  # interface: streams hold a connection up to an hour, batches of up to
  # 256 MB are parsed in-process. Only the compose network reaches it.
  node-api:
    <<: *app
    command: ['node', 'bin/server.js']
    environment:
      <<: *app-env
      HTTP_ROUTES: node
      PORT: 3335

  # Prefetching (all NNTP connections), planning, the tail, merging, settling.
  coordinator:
    <<: *app
    command: ['node', 'ace', 'coordinator:run']
    environment:
      <<: *app-env
      NNTP_CONNECTIONS: ${NNTP_CONNECTIONS:-38}

  # Phase 2's prober: reads the probe queue's articles over connections of its
  # own. The account has 50 (NNTP_ACCOUNT_CONNECTIONS): 5 reserved (the
  # coordinator's plain one, the spotter's and the spot inspector's 1 each, 2
  # to spare: a hedged request closes its connection and opens another; with
  # 10 the spot inspector got 502 Too many connections), the other 45 shared
  # by the coordinator (NNTP_MIN_CONNECTIONS–NNTP_CONNECTIONS) and the prober
  # (PROBE_MIN_CONNECTIONS–PROBE_CONNECTIONS), headers first
  # (app/services/nntp_shares.ts).
  prober:
    <<: *app
    command: ['node', 'ace', 'probe:run']
    volumes: []
    environment:
      <<: *app-env
      PROBE_CONNECTIONS: ${PROBE_CONNECTIONS:-8}
      # No claims under this much free on the NVMe (its overlay root): 2 GB above the 4 GB floor (2026-10-24), for
      # what the tail, the merger and the judge write meanwhile.
      PROBE_MIN_FREE_GB: ${PROBE_MIN_FREE_GB:-6}

  # The par2 merge: releases whose files one par2 set describes (what the prober read) become one. No NNTP.
  merger:
    <<: *app
    command: ['node', 'ace', 'releases:merge']
    volumes: []

  # The junk judge: releases judged by what their probes showed (dead, fake, repeated, locked, unusable), the changed
  # ones every 2 minutes, all daily; verdicts hide them from search. No NNTP.
  judge:
    <<: *app
    command: ['node', 'ace', 'releases:judge']
    volumes: []

  # Spotnet: the spotter reads free.pt's spots (verified, with the passwords
  # they name) into the spots table; the spot inspector reads each spot's NZB,
  # lists its files and links the releases they match. One connection each.
  spotter:
    <<: *app
    command: ['node', 'ace', 'spots:read']
    volumes: []

  spot-inspector:
    <<: *app
    command: ['node', 'ace', 'spots:inspect']
    volumes: []

  # The Rust worker; it has no NNTP account and talks to node-api only.
  # Stopped before node-api (a worker holding a stream keeps the server from
  # exiting).
  edge:
    image: usenet-rebuild-edge:latest
    build:
      context: ./src
      target: edge
    restart: unless-stopped
    command: ['--threads', '${EDGE_THREADS:-8}']
    environment:
      COORDINATOR_URL: http://node-api:3335
      NODE_TOKEN: ${NODE_TOKEN}
    stop_grace_period: 60s
    depends_on:
      node-api:
        condition: service_started

  # The TypeScript worker, for comparing: docker compose --profile edge-ts up -d edge-ts
  edge-ts:
    <<: *app
    profiles: [edge-ts]
    command: ['node', 'ace', 'edge:node', '--processes', '${EDGE_THREADS:-8}']
    environment:
      <<: *app-env
      COORDINATOR_URL: http://node-api:3335
    depends_on:
      node-api:
        condition: service_started

  # One-off ace commands: docker compose run --rm ace releases:duplicates
  ace:
    <<: *app
    profiles: [tools]
    restart: 'no'
    entrypoint: ['node', 'ace']
    command: ['list']

networks:
  default:
    name: usenet-rebuild