fix(worker): properly shutdown PostHog client

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- Fixed incorrect shutdown of PostHog SDK in the worker. [#609](https://github.com/sourcebot-dev/sourcebot/pull/609)
+
 ## [4.9.1] - 2025-11-07
 
 ### Added

packages/backend/src/index.ts

@@ -14,6 +14,7 @@ import { RepoPermissionSyncer } from './ee/repoPermissionSyncer.js';
 import { AccountPermissionSyncer } from "./ee/accountPermissionSyncer.js";
 import { PromClient } from './promClient.js';
 import { RepoIndexManager } from "./repoIndexManager.js";
+import { shutdownPosthog } from "./posthog.js";
 
 
 const logger = createLogger('backend-entrypoint');
@@ -101,6 +102,7 @@ const cleanup = async (signal: string) => {
 
     await prisma.$disconnect();
     await redis.quit();
+    await shutdownPosthog();
 }
 
 process.on('SIGINT', () => cleanup('SIGINT').finally(() => process.exit(0)));

packages/backend/src/posthog.ts

@@ -29,4 +29,6 @@ export function captureEvent<E extends PosthogEvent>(event: E, properties: Posth
     });
 }
 
-await posthog?.shutdown();
+export async function shutdownPosthog() {
+    await posthog?.shutdown();
+}