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feat: one Poll Lane per Site, replacing the shared pace (#100)

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Each Site runs its own poll goroutine, paced by Rest and Gap from the
registry (sites.go) instead of the shared cooldown/interval/stagger/batch
config. Rest is enforced by the due query's WHERE clause; the Lane sleeps
its effective gap between fetches (hour/eligible, floored at 1s).

Lane-local failures: two refusals stop that Site for 15m, a lost browser
stops only the round's remaining browser Lanes, and cover heals moved to
background goroutines so a slow CDN cannot consume a Lane's gap. The five
LATEST_CHAPTER_POLL_* pace env vars are gone; only the kill switch
remains.
This commit is contained in:
Sulthan Zaki
2026-08-16 12:51:01 +07:00
parent ddbd57070d
commit 90ce14aec6
22 changed files with 3645 additions and 1884 deletions
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README.md
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@@ -53,12 +53,7 @@ covers are stored, so the library renders in full with the browser switched off.
| `DISCORD_API_BASE` | `https://discord.com/api/v10` | Test seam — tests point it at a local stub so the real token exchange runs. |
| `USERSCRIPT_PATH` | `/userscript/manga-bookmark.user.js` | Bindmounted file served at `/u/{token}/manga-bookmark.user.js`. |
| `NOVEL_USERSCRIPT_PATH` | `/userscript/novel-bookmark.user.js` | Same, for the novel library. |
| `LATEST_CHAPTER_POLL_ENABLED` | `1` | `0` turns the poller off entirely. |
| `LATEST_CHAPTER_POLL_COOLDOWN` | `1h` | Rest between checks of one plain-TLS series; floor `15m`. |
| `LATEST_CHAPTER_POLL_BROWSER_COOLDOWN` | `6h` | Rest between checks of one browser-backed series; floor `15m`. |
| `LATEST_CHAPTER_POLL_INTERVAL` | `10m` | How often the poller wakes. Cannot shorten either cooldown. |
| `LATEST_CHAPTER_POLL_BATCH` | `14` | Series per wake. Keep `BATCH × STAGGER` under `INTERVAL`. |
| `LATEST_CHAPTER_POLL_STAGGER` | `20s` | Delay between fetches in a batch — this is the outbound request rate. |
| `LATEST_CHAPTER_POLL_ENABLED` | `1` | `0` turns the poller off entirely. Pace is per Site in the registry — one Poll Lane per Site, each with its own rest and gap (issue #100) — so no other knobs exist. |
Compose reads a few more from the same `.env` that the backend never sees:
`POSTGRES_PASSWORD` (required — `DATABASE_URL` is built from it, and Postgres