Merge pull request #484 from mendableai/nsc/fix-scaling-fix-email

Fix parallelization issues with caching

apps/api/package.json

@@ -94,6 +94,7 @@
     "promptable": "^0.0.10",
     "puppeteer": "^22.12.1",
     "rate-limiter-flexible": "2.4.2",
+    "redlock": "5.0.0-beta.2",
     "resend": "^3.4.0",
     "robots-parser": "^3.0.1",
     "scrapingbee": "^1.7.4",

apps/api/pnpm-lock.yaml

@@ -149,6 +149,9 @@ importers:
       rate-limiter-flexible:
         specifier: 2.4.2
         version: 2.4.2
+      redlock:
+        specifier: 5.0.0-beta.2
+        version: 5.0.0-beta.2
       resend:
         specifier: ^3.4.0
         version: 3.4.0
@@ -3533,6 +3536,9 @@ packages:
     resolution: {integrity: sha512-dBpDMdxv9Irdq66304OLfEmQ9tbNRFnFTuZiLo+bD+r332bBmMJ8GBLXklIXXgxd3+v9+KUnZaUR5PJMa75Gsg==}
     engines: {node: '>= 0.4.0'}
 
+  node-abort-controller@3.1.1:
+    resolution: {integrity: sha512-AGK2yQKIjRuqnc6VkX2Xj5d+QW8xZ87pa1UK6yA6ouUyuxfHuMP6umE5QK7UmTeOAymo+Zx1Fxiuw9rVx8taHQ==}
+
   node-domexception@1.0.0:
     resolution: {integrity: sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ==}
     engines: {node: '>=10.5.0'}
@@ -3956,6 +3962,10 @@ packages:
   redis@4.6.14:
     resolution: {integrity: sha512-GrNg/e33HtsQwNXL7kJT+iNFPSwE1IPmd7wzV3j4f2z0EYxZfZE7FVTmUysgAtqQQtg5NXF5SNLR9OdO/UHOfw==}
 
+  redlock@5.0.0-beta.2:
+    resolution: {integrity: sha512-2RDWXg5jgRptDrB1w9O/JgSZC0j7y4SlaXnor93H/UJm/QyDiFgBKNtrh0TI6oCXqYSaSoXxFh6Sd3VtYfhRXw==}
+    engines: {node: '>=12'}
+
   regenerator-runtime@0.14.1:
     resolution: {integrity: sha512-dYnhHh0nJoMfnkZs6GmmhFknAGRrLznOu5nc9ML+EJxGvrx6H7teuevqVqCuPcPK//3eDrrjQhehXVx9cnkGdw==}
 
@@ -8605,6 +8615,8 @@ snapshots:
 
   netmask@2.0.2: {}
 
+  node-abort-controller@3.1.1: {}
+
   node-domexception@1.0.0: {}
 
   node-ensure@0.0.0: {}
@@ -9108,6 +9120,10 @@ snapshots:
       '@redis/search': 1.1.6(@redis/client@1.5.16)
       '@redis/time-series': 1.0.5(@redis/client@1.5.16)
 
+  redlock@5.0.0-beta.2:
+    dependencies:
+      node-abort-controller: 3.1.1
+
   regenerator-runtime@0.14.1: {}
 
   require-directory@2.1.1: {}

apps/api/src/controllers/scrape.ts

@@ -118,18 +118,12 @@ export async function scrapeController(req: Request, res: Response) {
       } catch (error) {
         Logger.error(error);
         earlyReturn = true;
-        return res.status(402).json({ error: "Error checking team credits. Please contact hello@firecrawl.com for help." });
+        return res.status(500).json({ error: "Error checking team credits. Please contact hello@firecrawl.com for help." });
       }
     };
 
 
-    // Async check saves 500ms in average case
-    // Don't async check in llm extraction mode as it could be expensive
-    if (extractorOptions.mode.includes("llm-extraction")) {
     await checkCredits();
-    } else {
-      checkCredits();
-    }
 
     const jobId = uuidv4();
 

apps/api/src/lib/scrape-events.ts

@@ -46,7 +46,7 @@ export class ScrapeEvents {
         }).select().single();
         return (result.data as any).id;
       } catch (error) {
-        Logger.error(`Error inserting scrape event: ${error}`);
+        // Logger.error(`Error inserting scrape event: ${error}`);
         return null;
       }
     }

apps/api/src/scraper/WebScraper/__tests__/single_url.test.ts

@@ -23,8 +23,8 @@ describe('scrapSingleUrl', () => {
   }, 10000);
 });
 
-it('should return a list of links on the mendable.ai page', async () => {
-  const url = 'https://mendable.ai';
+it('should return a list of links on the firecrawl.ai page', async () => {
+  const url = 'https://example.com';
   const pageOptions: PageOptions = { includeHtml: true };
 
   const result = await scrapSingleUrl("TEST", url, pageOptions);
@@ -33,5 +33,5 @@ it('should return a list of links on the mendable.ai page', async () => {
   expect(result.linksOnPage).toBeDefined();
   expect(Array.isArray(result.linksOnPage)).toBe(true);
   expect(result.linksOnPage.length).toBeGreaterThan(0);
-  expect(result.linksOnPage).toContain('https://mendable.ai/blog')
+  expect(result.linksOnPage).toContain('https://www.iana.org/domains/example')
 }, 10000);

apps/api/src/services/billing/credit_billing.ts

@@ -3,9 +3,38 @@ import { withAuth } from "../../lib/withAuth";
 import { sendNotification } from "../notification/email_notification";
 import { supabase_service } from "../supabase";
 import { Logger } from "../../lib/logger";
+import { getValue, setValue } from "../redis";
+import Redlock from "redlock";
+import Client from "ioredis";
 
 const FREE_CREDITS = 500;
 
+const redlock = new Redlock(
+  // You should have one client for each independent redis node
+  // or cluster.
+  [new Client(process.env.REDIS_RATE_LIMIT_URL)],
+  {
+    // The expected clock drift; for more details see:
+    // http://redis.io/topics/distlock
+    driftFactor: 0.01, // multiplied by lock ttl to determine drift time
+
+    // The max number of times Redlock will attempt to lock a resource
+    // before erroring.
+    retryCount: 5,
+
+    // the time in ms between attempts
+    retryDelay: 100, // time in ms
+
+    // the max time in ms randomly added to retries
+    // to improve performance under high contention
+    // see https://www.awsarchitectureblog.com/2015/03/backoff.html
+    retryJitter: 200, // time in ms
+
+    // The minimum remaining time on a lock before an extension is automatically
+    // attempted with the `using` API.
+    automaticExtensionThreshold: 500, // time in ms
+  }
+);
 export async function billTeam(team_id: string, credits: number) {
   return withAuth(supaBillTeam)(team_id, credits);
 }
@@ -254,7 +283,19 @@ export async function supaCheckTeamCredits(team_id: string, credits: number) {
   }
 
   let totalCreditsUsed = 0;
+  const cacheKey = `credit_usage_${subscription.id}_${subscription.current_period_start}_${subscription.current_period_end}_lc`;
+  const redLockKey = `lock_${cacheKey}`;
+  const lockTTL = 10000; // 10 seconds
+
   try {
+    const lock = await redlock.acquire([redLockKey], lockTTL);
+
+    try {
+      const cachedCreditUsage = await getValue(cacheKey);
+
+      if (cachedCreditUsage) {
+        totalCreditsUsed = parseInt(cachedCreditUsage);
+      } else {
         const { data: creditUsages, error: creditUsageError } =
           await supabase_service.rpc("get_credit_usage_2", {
             sub_id: subscription.id,
@@ -268,9 +309,15 @@ export async function supaCheckTeamCredits(team_id: string, credits: number) {
 
         if (creditUsages && creditUsages.length > 0) {
           totalCreditsUsed = creditUsages[0].total_credits_used;
+          await setValue(cacheKey, totalCreditsUsed.toString(), 1800); // Cache for 30 minutes
+          // Logger.info(`Cache set for credit usage: ${totalCreditsUsed}`);
+        }
+      }
+    } finally {
+      await lock.release();
     }
   } catch (error) {
-    Logger.error(`Error calculating credit usage: ${error}`);
+    Logger.error(`Error acquiring lock or calculating credit usage: ${error}`);
   }
 
   // Adjust total credits used by subtracting coupon value