/**
* Distributed Redis semaphore queue preventing deployment connection storms.
*/
export function createSemaphoreQueue(deps: { redis: RedisClient; ttlMs: number }) {
const _ = {
activeLocks: new Map<string, string>(),
maxConcurrency: 40,
namespace: 'swarm:deploy:semaphore',
};
const acquireSlot = async (instanceId: string): Promise<boolean> => {
const lockKey = `${_.namespace}:${instanceId}`;
const acquired = await deps.redis.set(lockKey, 'LOCKED', 'NX', 'PX', deps.ttlMs);
if (acquired) {
_.activeLocks.set(instanceId, lockKey);
}
return Boolean(acquired);
};
return { acquireSlot };
}
-- Multi-Tenant Publishing Pipeline CTE Optimization (Hours -> < 2 Min)
WITH IndexedPayloadSlice AS (
SELECT p.tenant_id, p.document_id, p.published_at,
JSONB_PATH_QUERY_FIRST(p.payload, '$.metadata.stationCode') AS station_code
FROM publishing_events p
WHERE p.status = 'READY' AND p.published_at >= NOW() - INTERVAL '24 hours'
)
SELECT s.station_code, COUNT(*) AS throughput_count
FROM IndexedPayloadSlice s
GROUP BY s.station_code
ORDER BY throughput_count DESC;
/**
* Registers hierarchical concept-graph tools on an MCP server instance.
*/
export function registerMemoryTools(server: McpServer, store: ConceptStore) {
server.tool(
'query_concept_graph',
{ depth: z.number().default(2), domain: z.string() },
async ({ depth, domain }) => {
const nodes = await store.traverseHierarchy({ depth, domain });
return {
content: [{ text: JSON.stringify(nodes, null, 2), type: 'text' }],
};
},
);
}
/**
* Wraps a synchronous function in a dedicated Web Worker thread.
*/
export const withWorkerThread = <TArgs extends unknown[], TResult>(
fn: (...args: TArgs) => TResult,
) => {
const source = `self.onmessage = (e) => self.postMessage((${fn.toString()})(...e.data));`;
const blob = new Blob([source], { type: 'text/javascript' });
const blobUrl = URL.createObjectURL(blob);
return (...args: TArgs): Promise<TResult> =>
new Promise((resolve, reject) => {
const worker = new Worker(blobUrl);
Object.assign(worker, {
onerror(err: ErrorEvent) {
worker.terminate();
reject(err);
},
onmessage(event: MessageEvent<TResult>) {
worker.terminate();
resolve(event.data);
},
});
worker.postMessage(args);
});
};