Robust Observability for Mobile Apps & SDKs using Sentry

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Robust Observability for Mobile Apps & SDKs using Sentry Nsikak, Thompson Android Engineer, League https://github.com/EverlongProject/ sundae-android/pull/7071#discussi on_r1232528316

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😖 😠

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Observability is a feature

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What is Observability?

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Observability is a feature for improving user experience & driving growth. Observability is the ability to see what is happening in production on user device. or

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Why is it important

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Debugging and issue resolution Performance optimization Understanding user behavior Operational efficiency

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How can I implement observability?

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sentry.io

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Error Monitoring Performance Tracing Session Profiling

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Networking Local Storage Sentry In-house Mobile App Networking Local Storage Sentry SDK Ext. SDK user Networking Local Storage Sentry Sentry

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Setup for App level SentryAndroid.init(this) { options -> options.dsn = “YOUR_DSN” } Module or SDK specific level private val options = SentryOptions().apply { dsn = “YOUR_DSN”} Val hub = Hub(options)

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Networking Local Storage Sentry In-house Mobile App Networking Local Storage Hub SDK Ext. SDK user Networking Local Storage Hub Sentry

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Logging

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Logging ● Fatal Errors. E.g ANRs ● Non fatal Errors ● Catched Exceptions ● Screenshot try { throw new Exception("This is a test."); } catch (Exception e) { Sentry.captureException(e); }

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Logging - Fatal Errors. E.g ANRs

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Performance Tracing

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Performance Tracing ● Cold & Warm App Startup time ● Transaction Duration ● Slow & Frozen Frames Rendering ● UI load time

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Performance Tracing - Custom ● Network Request response duration - HTTP, GraphQL ● Database transactions - e.g insert, read , update

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Performance Tracing - Custom ITransaction transaction = Sentry.startTransaction("processOrderBatch()", "task"); try { processOrderBatch(); } catch (Exception e) { transaction.setThrowable(e); transaction.setStatus(SpanStatus.INTERNAL_ERROR); } finally { transaction.finish(); }

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Performance Tracing - Transaction Duration

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Metrics

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Metrics - Sentry Dashboard Observability metrics are selected key performance indicators (KPIs) such as: ● Error rates ● Crash session rate ● Unique User crash ● Overall Startup time

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Metrics - Sentry Dashboard

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Alerts

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Alerts Alerts provide real-time visibility into problems with your code and the impact on your users.

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Features App SDK Custom Tracing Automatic Tracing - app startup time Crash Reporting - ANR Logging exceptions or message