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fix(db,frontend): reserve DB connections for API and reduce frontend polling

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Background tasks (ingestion, PDF resolution, scheduler) now acquire an
asyncio.Semaphore before checking out a DB connection, guaranteeing at
least N connections remain available for API request handlers. Removes
duplicate polling loop from PublicationsPage, debounces publication
reload on run-status changes, and increases poll interval from 5s to 15s
since SSE handles live discovery.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Justin Visser 2026-03-02 19:09:06 +01:00
parent a490e14126
commit f50b609a36
11 changed files with 97 additions and 69 deletions
Download patch file Download diff file Expand all files Collapse all files

12
frontend/src/features/publications/composables/usePublicationData.ts
View file

@ -277,12 +277,16 @@ export function usePublicationData() {
// --- Run-triggered refresh watcher ---
let previousRunStatusKey: string | null = null;
watch(
() => runStatus.latestRun,
async (nextRun, previousRun) => {
const nextRunId = nextRun && (nextRun.status === "running" || nextRun.status === "resolving") ? nextRun.id : null;
const previousRunId = previousRun && (previousRun.status === "running" || previousRun.status === "resolving") ? previousRun.id : null;
if (nextRunId === null || nextRunId === previousRunId) return;
async (nextRun) => {
const nextStatus = nextRun ? `${nextRun.id}:${nextRun.status}` : null;
if (nextStatus === previousRunStatusKey) return;
previousRunStatusKey = nextStatus;
const isActive = nextRun && (nextRun.status === "running" || nextRun.status === "resolving");
if (!isActive) return;
resetPageAndSnapshot();
await loadPublications();
},

24
frontend/src/pages/PublicationsPage.vue
View file

@ -1,5 +1,5 @@
<script setup lang="ts">
import { computed, onMounted, onUnmounted, ref, watch } from "vue";
import { computed, onMounted, ref, watch } from "vue";
import AppPage from "@/components/layout/AppPage.vue";
import AsyncStateGate from "@/components/patterns/AsyncStateGate.vue";
@ -37,23 +37,6 @@ const selectedPublicationKeys = ref<Set<string>>(new Set());
const retryingPublicationKeys = ref<Set<string>>(new Set());
const favoriteUpdatingKeys = ref<Set<string>>(new Set());
const PUBLICATIONS_RUN_STATUS_SYNC_INTERVAL_MS = 5000;
let runStatusSyncTimer: ReturnType<typeof setInterval> | null = null;
function startRunStatusSyncLoop(): void {
if (runStatusSyncTimer !== null) return;
runStatusSyncTimer = setInterval(() => {
if (runStatus.isRunActive) return;
void runStatus.syncLatest();
}, PUBLICATIONS_RUN_STATUS_SYNC_INTERVAL_MS);
}
function stopRunStatusSyncLoop(): void {
if (runStatusSyncTimer === null) return;
clearInterval(runStatusSyncTimer);
runStatusSyncTimer = null;
}
// --- Computed ---
const selectedCount = computed(() => selectedPublicationKeys.value.size);
@ -358,13 +341,8 @@ async function onStartRun(): Promise<void> {
onMounted(() => {
pub.syncFiltersFromRoute();
startRunStatusSyncLoop();
void Promise.all([pub.loadScholarFilters(), pub.loadPublications(), runStatus.syncLatest()]);
});
onUnmounted(() => {
stopRunStatusSyncLoop();
});
</script>
<template>

2
frontend/src/stores/run_status.ts
View file

@ -9,7 +9,7 @@ import {
import { type PublicationItem } from "@/features/publications";
import { ApiRequestError } from "@/lib/api/errors";
export const RUN_STATUS_POLL_INTERVAL_MS = 5000;
export const RUN_STATUS_POLL_INTERVAL_MS = 15000;
export const RUN_STATUS_STARTING_PHASE_MS = 1500;
export type StartManualCheckResult =