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⚡ Bolt: Parallelize ZimaOS gateway calls in Dashboard APIs #70

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⚡ Bolt: Parallelize ZimaOS gateway calls in Dashboard APIs #70

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3 changes: 3 additions & 0 deletions .jules/bolt.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
## 2025-05-28 - Parallelizing Gateway Calls and DB Queries
**Learning:** In Astro API routes serving frontend dashboards, sequentially executing slow external checks (like `fetchZimaOSSessionsPayload` and `getPrimaryDevServerStatus`) after database operations acts as a severe performance bottleneck because the network requests wait idly during DB I/O.
**Action:** Always initiate slow external network or gateway calls at the very beginning of the request handler (`const fetchPromise = fetchSomething().catch(e => e)`) so they execute concurrently with local Drizzle ORM queries (`Promise.all([db.select()...])`), and `await` the external response only at the end before returning the payload. Additionally, when processing independent I/O checks across a list of database results (like scanning projects), map the logic into an array of Promises and sequentially `await` them inside a `for` loop to preserve order while maximizing concurrency.
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@gemini-code-assist gemini-code-assist Bot May 28, 2026

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medium

Update the documentation to recommend using Promise.all() instead of sequentially awaiting promises in a for loop, as Promise.all() is the standard and idiomatic way to handle concurrent promises while preserving their order.

8 changes: 7 additions & 1 deletion src/pages/api/dashboard-kpis.ts
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Expand Up @@ -25,6 +25,9 @@ function isOpenQueueStatus(st: string): boolean {
}

export const GET: APIRoute = async () => {
// Démarre la requête gateway ZimaOS le plus tôt possible pour qu'elle s'exécute en parallèle avec la DB
const zimaosFetchPromise = fetchZimaOSSessionsPayload(undefined).catch((e) => e);

const base = {
projectCount: 0,
tasksTotal: 0,
Expand Down Expand Up @@ -76,7 +79,10 @@ export const GET: APIRoute = async () => {
}

try {
const zimaosResult = await fetchZimaOSSessionsPayload(undefined);
const zimaosResult = await zimaosFetchPromise;
if (zimaosResult instanceof Error) {
throw zimaosResult;
}
const ocSessions = zimaosResult.ok
? (normalizeZimaOSSessions(zimaosResult.data) as Record<string, unknown>[])
: [];
Expand Down
32 changes: 25 additions & 7 deletions src/pages/api/dashboard-projects-health.ts
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Expand Up @@ -31,6 +31,9 @@ function mapSessionToRunState(raw: Record<string, unknown>): { running: boolean
export const GET: APIRoute = async ({ locals }) => {
const email = locals.user?.email as string | undefined;

// Démarre la requête gateway ZimaOS le plus tôt possible pour qu'elle s'exécute en parallèle
const zimaosFetchPromise = fetchZimaOSSessionsPayload(email).catch((e) => e);

const payload: {
projects: Array<{
id: number;
Expand Down Expand Up @@ -69,9 +72,16 @@ export const GET: APIRoute = async ({ locals }) => {

try {
const { db, Project, AgentTask } = await loadAstroDb();
const projects = await db.select().from(Project).orderBy(desc(Project.updatedAt)).limit(12);

const tasksAll = await db.select().from(AgentTask).limit(500);
// Parallélise les requêtes DB (Project et AgentTask) et getWorkSystemStatus
const [projectsRes, tasksAll, workScheduler] = await Promise.all([
db.select().from(Project).orderBy(desc(Project.updatedAt)).limit(12),
db.select().from(AgentTask).limit(500),
getWorkSystemStatus()
]);

const projects = projectsRes as ProjectRow[];
payload.swarm.workScheduler = workScheduler;

const countForProject = (pid: number | null | undefined) => {
const pend = tasksAll.filter(
Expand All @@ -83,7 +93,8 @@ export const GET: APIRoute = async ({ locals }) => {
return { pendingOrRunning: pend.length, running };
};

for (const p of projects as ProjectRow[]) {
// Prépare les promesses pour la résolution I/O des projets en parallèle
const projectPromises = projects.map(async (p) => {
let dev: {
ok: boolean;
running?: boolean;
Expand Down Expand Up @@ -131,16 +142,20 @@ export const GET: APIRoute = async ({ locals }) => {
dev.hint = 'Erreur lecture disque';
}

payload.projects.push({
return {
id: p.id,
name: p.name,
swarmEnabled: Number(p.swarmEnabled) === 1,
devServer: dev,
tasks: countForProject(p.id),
});
};
});

// Attendre les résultats dans le même ordre pour préserver l'ordre du tri DB (desc(Project.updatedAt))
for (const promise of projectPromises) {
payload.projects.push(await promise);
}
Comment on lines +154 to 157
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@gemini-code-assist gemini-code-assist Bot May 28, 2026

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medium

Using Promise.all is the standard and idiomatic way to await an array of promises in JavaScript/TypeScript. It naturally preserves the order of the resolved values, making the manual for...of loop and push redundant and less concise.

Suggested change
// Attendre les résultats dans le même ordre pour préserver l'ordre du tri DB (desc(Project.updatedAt))
for (const promise of projectPromises) {
payload.projects.push(await promise);
}
payload.projects = await Promise.all(projectPromises);


payload.swarm.workScheduler = await getWorkSystemStatus();
} catch (e) {
payload.dbError = e instanceof Error ? e.message : String(e);
return new Response(JSON.stringify(payload), {
Expand All @@ -150,7 +165,10 @@ export const GET: APIRoute = async ({ locals }) => {
}

try {
const oc = await fetchZimaOSSessionsPayload(email);
const oc = await zimaosFetchPromise;
if (oc instanceof Error) {
throw oc;
}
payload.swarm.zimaosOk = oc.ok;
const sessions = oc.ok
? (normalizeZimaOSSessions(oc.data) as Record<string, unknown>[])
Expand Down