bvandeusenandClaude Opus 5
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Operator: "there is a repull every time this page loads is there a reason
this info isn't being tracked in the background and stored in some way?"
There was a reason and it had expired, and underneath it there was plain
waste.
The expired one: /api/system/workers was deliberately uncached because an
operator dragging the stepper must not be shown a pre-change value. That
stopped being true at 1353d34, when the UI began patching its row from the
write's reply instead of refetching.
The waste: size_worker_lanes already inspected the broker on a timer to
decide pool sizes — computing the pool, active, reserved and queue depth
the page shows, using them, and discarding them. The browser then asked
the broker for the same numbers four times a minute, per open tab.
So one inspect now feeds three things: the sizing decision, a stored
sample (worker_lane_sample, alembic 0107), and the celery roster. No
request path touches the broker at all — the roster refresh comes off
/api/system/health too, where it had been rate-limited to 20s and so made
worker liveness a function of whether anyone had a browser open.
Consequences, stated rather than hidden:
- The live figures are up to one sweep old. measured_at travels with each
lane and the page says how old, because a stale number presented as
current is how someone watches a queue "not move" that is moving.
- The sweep is the roster's only writer now, so its period and the
staleness thresholds are in a relationship. 60s against a 90s stale
threshold left one missed tick between normal and all-yellow — the
shape of lesson #4355 — so the period is 30s, named once in
worker_lanes, and system_health asserts its headroom at import with a
test stating the same thing in prose.
- An idle lane therefore also gives a worker back twice as fast. That is
the direction asked for: "idle instances quiet down when not running".
Also bounds the inspect in push_lane_cap, which was an await with no
deadline (rule 156) — harmless while it ran on a request, less so now
that it runs in a background task where a hang would be silent.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LVjrnpQjRgHdvq95rASoiR
102 lines
3.1 KiB
Python
102 lines
3.1 KiB
Python
"""All ORM models. Import this module to make every model visible to Alembic."""
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from .app_setting import AppSetting
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from .artist import Artist
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from .artist_membership_suggestion import ArtistMembershipSuggestion
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from .artist_visit import ArtistVisit
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from .backup_run import BackupRun
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from .base import Base
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from .character_prototype import CcipPrototypeState, CharacterPrototype
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from .credential import Credential
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from .download_event import DownloadEvent
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from .external_link import ExternalLink
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from .gpu_job import GpuJob
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from .head_auto_apply_run import HeadAutoApplyRun
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from .head_metric import HeadMetric
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from .head_metrics_snapshot import HeadMetricsSnapshot
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from .head_training_run import HeadTrainingRun
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from .image_provenance import ImageProvenance
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from .image_record import ImageRecord
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from .image_region import ImageRegion
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from .import_batch import ImportBatch
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from .import_settings import ImportSettings
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from .import_task import ImportTask
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from .library_audit_run import LibraryAuditRun
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from .membership_sync import MembershipSync
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from .ml_settings import MLSettings
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from .patreon_failed_media import PatreonFailedMedia
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from .patreon_seen_media import PatreonSeenMedia
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from .platform_membership import PlatformMembership
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from .post import Post
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from .post_association import PostAssociation
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from .post_attachment import PostAttachment, attachment_download_url
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from .presentation_review import PresentationReview
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from .series_chapter import SeriesChapter
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from .series_page import SeriesPage
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from .series_suggestion import SeriesSuggestion
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from .service_seen import ServiceSeen
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from .source import Source
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from .subscribestar_failed_media import SubscribeStarFailedMedia
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from .subscribestar_seen_media import SubscribeStarSeenMedia
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from .tag import Tag, TagKind, image_tag
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from .tag_alias import TagAlias
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from .tag_head import TagHead
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from .tag_positive_confirmation import TagPositiveConfirmation
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from .tag_suggestion_rejection import TagSuggestionRejection
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from .task_run import TaskRun
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from .worker_lane import WorkerLane
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from .worker_lane_sample import WorkerLaneSample
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__all__ = [
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"Base",
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"AppSetting",
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"Artist",
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"ArtistMembershipSuggestion",
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"ArtistVisit",
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"BackupRun",
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"Source",
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"Credential",
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"PatreonFailedMedia",
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"PatreonSeenMedia",
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"SubscribeStarFailedMedia",
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"SubscribeStarSeenMedia",
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"Post",
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"PostAssociation",
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"PostAttachment",
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"attachment_download_url",
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"PresentationReview",
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"SeriesChapter",
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"SeriesPage",
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"SeriesSuggestion",
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"PlatformMembership",
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"ServiceSeen",
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"ImageRecord",
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"ImageProvenance",
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"ImageRegion",
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"Tag",
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"TagKind",
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"image_tag",
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"DownloadEvent",
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"ExternalLink",
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"GpuJob",
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"ImportBatch",
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"ImportTask",
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"ImportSettings",
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"LibraryAuditRun",
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"MembershipSync",
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"MLSettings",
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"HeadAutoApplyRun",
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"HeadMetric",
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"HeadMetricsSnapshot",
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"HeadTrainingRun",
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"TagAlias",
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"TagHead",
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"CharacterPrototype",
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"CcipPrototypeState",
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"TagPositiveConfirmation",
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"TagSuggestionRejection",
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"TaskRun",
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"WorkerLane",
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"WorkerLaneSample",
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]
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