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, '$.metadata.stationCode') AS station_code
FROM publishing_events p
WHERE p.status = 'READY' AND p.published_at >= NOW() - INTERVAL '24 hours'
)
SELECT s.station_code, COUNT(*) AS throughput_count
FROM IndexedPayloadSlice s
GROUP BY s.station_code
ORDER BY throughput_count DESC;
// Model Context Protocol (MCP) Hierarchical Concept Memory Server
export function registerMemoryTools(server: McpServer, store: ConceptStore) {
server.tool(
'query_concept_graph',
{ domain: z.string(), depth: z.number().default(2) },
async ({ domain, depth }) => {
const nodes = await store.traverseHierarchy({ domain, depth });
return {
content: [{ type: 'text', text: JSON.stringify(nodes, null, 2) }],
};
},
);
}
// Reusable Web Worker Higher-Order Function (HOF) Wrapper
export const withWorkerThread = <TArgs extends unknown[], TResult>(
fn: (...args: TArgs) => TResult,
) => {
const source = `self.onmessage = (e) => self.postMessage((${fn.toString()})(...e.data));`;
const blobUrl = URL.createObjectURL(new Blob([source], { type: 'text/javascript' }));
return (...args: TArgs): Promise<TResult> =>
new Promise((resolve, reject) => {
const worker = new Worker(blobUrl);
worker.onmessage = (event) => {
worker.terminate();
resolve(event.data);
};
worker.onerror = (err) => {
worker.terminate();
reject(err);
};
worker.postMessage(args);
});
};