chore: reduce Sentry span sampling outside development (#1475)

* chore: reduce Sentry event sampling outside development

* chore: update changelog for PR 1475

* fix: sample Sentry spans instead of errors

Author: brendan-kellam

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+- Reduced Sentry span sampling to 10% outside development. [#1475](https://github.com/sourcebot-dev/sourcebot/pull/1475)
+
 ## [5.1.3] - 2026-07-20
 
 ### Added

packages/backend/src/instrument.ts

@@ -12,6 +12,7 @@ if (!!env.NEXT_PUBLIC_SENTRY_BACKEND_DSN && !!env.NEXT_PUBLIC_SENTRY_ENVIRONMENT
         // to the version for builds that don't pass a commit SHA.
         release: env.NEXT_PUBLIC_BUILD_COMMIT_SHA ?? SOURCEBOT_VERSION,
         environment: env.NEXT_PUBLIC_SENTRY_ENVIRONMENT,
+        tracesSampleRate: env.NEXT_PUBLIC_SENTRY_ENVIRONMENT === 'development' ? 1.0 : 0.1,
     });
 } else {
     logger.debug("Sentry was not initialized");

packages/web/src/instrumentation-client.ts

@@ -15,7 +15,7 @@ if (!!process.env.NEXT_PUBLIC_SENTRY_WEBAPP_DSN && !!process.env.NEXT_PUBLIC_SEN
         integrations: [
             Sentry.browserProfilingIntegration(),
         ],
-        tracesSampleRate: 1.0,
+        tracesSampleRate: process.env.NEXT_PUBLIC_SENTRY_ENVIRONMENT === 'development' ? 1.0 : 0.1,
         // Evaluated once per `Sentry.init()`, i.e. once per page load.
         profileSessionSampleRate: 1.0,
         // Profile only while a sampled root span is active, rather than continuously.

packages/web/src/sentry.edge.config.ts

@@ -10,7 +10,7 @@ if (!!process.env.NEXT_PUBLIC_SENTRY_WEBAPP_DSN && !!process.env.NEXT_PUBLIC_SEN
         dsn: process.env.NEXT_PUBLIC_SENTRY_WEBAPP_DSN,
         environment: process.env.NEXT_PUBLIC_SENTRY_ENVIRONMENT,
 
-        tracesSampleRate: 1.0,
+        tracesSampleRate: process.env.NEXT_PUBLIC_SENTRY_ENVIRONMENT === 'development' ? 1.0 : 0.1,
 
         // Setting this option to true will print useful information to the console while you're setting up Sentry.
         debug: false,

packages/web/src/sentry.server.config.ts

@@ -15,7 +15,7 @@ if (!!process.env.NEXT_PUBLIC_SENTRY_WEBAPP_DSN && !!process.env.NEXT_PUBLIC_SEN
         integrations: [
             nodeProfilingIntegration(),
         ],
-        tracesSampleRate: 1.0,
+        tracesSampleRate: process.env.NEXT_PUBLIC_SENTRY_ENVIRONMENT === 'development' ? 1.0 : 0.1,
         // Evaluated once per `Sentry.init()`, i.e. once per server process.
         profileSessionSampleRate: 1.0,
         // Profile only while a sampled root span is active, rather than continuously.