Workshop 3

on YouTube ↗02h 03m

" summary

Shows concrete instrumentation: installs the OpenTelemetry PHP extension via PECL, configures HTTP/JSON export to Jaeger, and then switches to Sentry using a Sentry DSN to send traces. Builds a Cake middleware that starts a transaction (root span), a custom query logger that turns parameterized SQL and timings into child spans, and HTTP-client event hooks that record external API 400ms calls. Observes single-span examples ~4ms and aggregated P95 ~21ms, uses the eximer sampling profiler at ~10ms sampling (profiles currently capped at 30s), and flushes telemetry in the server_terminate event so sending does not slow the client.

AI-written summary · about

" chapters (51)

1. 0:00Introduction and background
2. 1:04What is observability
3. 2:13OpenTelemetry introduction
4. 3:17Setting up a CakePHP app
5. 4:43Zero-code instrumentation
6. 7:13Running Jaeger for traces
7. 7:55Installing OpenTelemetry dependencies
8. 9:01Viewing first trace in Jaeger
9. 10:30How auto-instrumentation works
10. 13:09Adding custom spans
11. 18:42Switching to Sentry for demo
12. 19:52Sentry PHP SDK overview
13. 21:07Middleware-based tracing
14. 24:05Configuring Sentry SDK
15. 28:19Transactions vs spans
16. 31:13Enabling tracing in Sentry
17. 34:03Setting precise transaction start
18. 36:26Improving transaction naming
19. 37:32Distributed tracing concept
20. 39:26Updating transaction name dynamically
21. 40:30Measuring bootstrap time
22. 43:09Database query tracing
23. 44:54Break time announcement
24. 45:15Sentry self-hosting options
25. 46:19Precise timing with start/end stamps
26. 48:09Tracing HTTP client calls
27. 51:32Creating custom query logger
28. 57:28Query logger implementation
29. 1:01:41Viewing database spans in Sentry
30. 1:02:57Aggregating query performance
31. 1:06:19Tracing third-party API calls
32. 1:17:34Enhancing HTTP client spans
33. 1:21:50Event-based tracing in CakePHP
34. 1:22:12Error reporting with Sentry
35. 1:23:36Custom error logger setup
36. 1:28:46User context in error reporting
37. 1:31:20Profiling introduction
38. 1:32:25Deterministic vs sampling profilers
39. 1:35:21Setting up Eximer profiler
40. 1:36:25Viewing profiling data
41. 1:40:46Real-world profiling example
42. 1:43:37Flame graph aggregation
43. 1:46:49Sending profiling data to Sentry
44. 1:47:53Using Relay for performance
45. 1:49:01Server terminate event in CakePHP
46. 1:52:32Metrics introduction
47. 1:53:36Recording custom metrics
48. 1:56:16Flushing metrics in terminate
49. 1:57:35Viewing metrics in Sentry
50. 1:59:07Alerting and anomaly detection
51. 2:01:00Q&A session

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