Instrument Django app with Sentry and OTel and check differences.

[antonpirker]

Instrument Django app with Sentry and OTel and check differences.

[antonpirker]

Example traces for both scenarios:

1. Sentry:
   https://sentry-sdks.sentry.io/performance/trace/060236bb8c7c4964b5dc902457ed6878/?node=txn-915f3493bb3e4f66864523ca78ce21b6&project=5461230&query=http.method%3AGET&referrer=performance-transaction-summary&showTransactions=recent&source=performance_transaction_summary&statsPeriod=1h&timestamp=1719405647&transaction=%2Fapi%2Fshows%2F%7Bpk%7D%2F&unselectedSeries=p100%28%29&unselectedSeries=avg%28%29

2. Sentry using Otel:
   https://sentry-sdks.sentry.io/performance/trace/13998512b73fbf891922ecfdda42d544/?node=txn-b9a55d514601420aa11b1e9ddcb44c7e&project=5461230&query=http.method%3AGET&referrer=performance-transaction-summary&showTransactions=recent&source=performance_transaction_summary&statsPeriod=1h&timestamp=1719499933&transaction=GET+api%2Fshows%2F%28%3FP%3Cpk%3E%5B%5E%2F.%5D%2B%29%2F%24&unselectedSeries=p100%28%29&unselectedSeries=avg%28%29

[antonpirker]

Scenario 1) Sentry

Trace in Sentry.io

[antonpirker]

Scenario 2) Sentry using Opentelementry

Trace in Sentry.io

[antonpirker]

Things that I noticed:

• Otel does not create Spans for middleware, view rendering, or Django signals (that is the Missing Instrumentation block in Otel trace)
• One can see trigger_notifications (the Celery task) in otel spans (which is cool), but there is not much in it.

[antonpirker]

One thing of note: Database spans in OTel include a special structured comment that includes tracing and other information:

[antonpirker]

OTel database spans also include information about the HTTP server they where running in: