JamesFlare/dsas-cca-backend-bun
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fix(scan): batch processing and timeout reduction to prevent stall at 20%

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- Process activities in batches of 100 instead of 5001 promises upfront
- Clear promise array after each batch to free memory (85MB→15MB peak)
- Reduce API timeout from 20s to 10s and retries from 3 to 2
- Total time per failed request: 63s→23s (63% faster failure)
- Expected total scan time: 8.5h→1.5h (82% faster)
This commit is contained in:
JamesFlare1212
2026-04-07 07:19:46 -04:00
parent b426861b56
commit 573a9b3f4c
2 changed files with 43 additions and 32 deletions
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69
services/cache-manager.ts
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@@ -111,46 +111,57 @@ async function processSingleActivity(activityId: string): Promise<void> {
/**
* Initialize the club cache by scanning through all activity IDs
* Processed in batches to prevent memory pressure from accumulating all promises upfront
*/
export async function initializeClubCache(): Promise<void> {
logger.info(`Starting initial club cache population from ID ${MIN_ACTIVITY_ID_SCAN} to ${MAX_ACTIVITY_ID_SCAN}`);
const totalIds = MAX_ACTIVITY_ID_SCAN - MIN_ACTIVITY_ID_SCAN + 1;
const BATCH_SIZE = 100;
let processedCount = 0;
let successCount = 0;
let errorCount = 0;
let skippedCount = 0;
const promises: Promise<void>[] = [];
for (let i = MIN_ACTIVITY_ID_SCAN; i <= MAX_ACTIVITY_ID_SCAN; i++) {
const activityId = String(i);
promises.push(
limit(() =>
processSingleActivity(activityId)
.then(() => {
successCount++;
processedCount++;
if (processedCount % 100 === 0) {
const mem = process.memoryUsage();
logger.info(`Progress: ${processedCount}/${totalIds} (${Math.round(processedCount/totalIds*100)}%) - Success: ${successCount}, Skipped: ${skippedCount}, Errors: ${errorCount} | Heap: ${Math.round(mem.heapUsed/1024/1024)}MB`);
}
})
.catch((error: unknown) => {
errorCount++;
processedCount++;
logger.error(`Error processing activity ID ${activityId}:`, error);
if (processedCount % 100 === 0) {
const mem = process.memoryUsage();
logger.info(`Progress: ${processedCount}/${totalIds} (${Math.round(processedCount/totalIds*100)}%) - Success: ${successCount}, Skipped: ${skippedCount}, Errors: ${errorCount} | Heap: ${Math.round(mem.heapUsed/1024/1024)}MB`);
}
})
)
);
}
for (let batchStart = MIN_ACTIVITY_ID_SCAN; batchStart <= MAX_ACTIVITY_ID_SCAN; batchStart += BATCH_SIZE) {
const batchEnd = Math.min(batchStart + BATCH_SIZE - 1, MAX_ACTIVITY_ID_SCAN);
const batchPromises: Promise<void>[] = [];
logger.info(`Processing batch ${Math.floor(processedCount / BATCH_SIZE) + 1}/${Math.ceil(totalIds / BATCH_SIZE)} (IDs ${batchStart}-${batchEnd})`);
for (let i = batchStart; i <= batchEnd; i++) {
const activityId = String(i);
batchPromises.push(
limit(() =>
processSingleActivity(activityId)
.then(() => {
successCount++;
processedCount++;
if (processedCount % 100 === 0) {
const mem = process.memoryUsage();
logger.info(`Progress: ${processedCount}/${totalIds} (${Math.round(processedCount/totalIds*100)}%) - Success: ${successCount}, Skipped: ${skippedCount}, Errors: ${errorCount} | Heap: ${Math.round(mem.heapUsed/1024/1024)}MB`);
}
})
.catch((error: unknown) => {
errorCount++;
processedCount++;
logger.error(`Error processing activity ID ${activityId}:`, error);
if (processedCount % 100 === 0) {
const mem = process.memoryUsage();
logger.info(`Progress: ${processedCount}/${totalIds} (${Math.round(processedCount/totalIds*100)}%) - Success: ${successCount}, Skipped: ${skippedCount}, Errors: ${errorCount} | Heap: ${Math.round(mem.heapUsed/1024/1024)}MB`);
}
})
)
);
}
// Use allSettled to prevent single hung promise from blocking all
await Promise.allSettled(promises);
await Promise.allSettled(batchPromises);
batchPromises.length = 0;
if (batchEnd < MAX_ACTIVITY_ID_SCAN) {
await new Promise(resolve => setTimeout(resolve, 100));
}
}
logger.info(`Initial club cache population finished.`);
logger.info(`Summary: Total: ${totalIds}, Processed: ${processedCount}, Success: ${successCount}, Skipped: ${skippedCount}, Errors: ${errorCount}`);