Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Shipping Apps Confidently with Firebase
Search
Subhrajyoti Sen
November 06, 2021
Programming
0
65
Shipping Apps Confidently with Firebase
Subhrajyoti Sen
November 06, 2021
Tweet
Share
More Decks by Subhrajyoti Sen
See All by Subhrajyoti Sen
Updated Lessons from a KMP Developer's Toolkit
subhrajyotisen
0
13
Building Mobile Apps and Scaling them
subhrajyotisen
0
18
Compose Previews as a Power User
subhrajyotisen
1
150
Understanding WindowInsets
subhrajyotisen
0
180
Exploring a KMM Developer’s Toolkit
subhrajyotisen
1
200
Understanding WindowInsets - Android Worldwide
subhrajyotisen
0
310
Understanding WindowInsets
subhrajyotisen
1
190
Demystifying Styles and Themes
subhrajyotisen
0
220
Journey Of Time
subhrajyotisen
0
230
Other Decks in Programming
See All in Programming
Navigating Dependency Injection with Metro
zacsweers
3
2.5k
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
デザイナーが Androidエンジニアに 挑戦してみた
874wokiite
0
540
請來的 AI Agent 同事們在寫程式時,怎麼用 pytest 去除各種幻想與盲點
keitheis
0
120
Putting The Genie in the Bottle - A Crash Course on running LLMs on Android
iurysza
0
140
実用的なGOCACHEPROG実装をするために / golang.tokyo #40
mazrean
1
290
Design Foundational Data Engineering Observability
sucitw
3
200
Amazon RDS 向けに提供されている MCP Server と仕組みを調べてみた/jawsug-okayama-2025-aurora-mcp
takahashiikki
1
110
Ruby Parser progress report 2025
yui_knk
1
450
時間軸から考えるTerraformを使う理由と留意点
fufuhu
16
4.8k
詳解!defer panic recover のしくみ / Understanding defer, panic, and recover
convto
0
250
Kiroで始めるAI-DLC
kaonash
2
610
Featured
See All Featured
For a Future-Friendly Web
brad_frost
180
9.9k
Git: the NoSQL Database
bkeepers
PRO
431
66k
Practical Orchestrator
shlominoach
190
11k
Large-scale JavaScript Application Architecture
addyosmani
513
110k
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.8k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
656
61k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.9k
How to Create Impact in a Changing Tech Landscape [PerfNow 2023]
tammyeverts
53
2.9k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.9k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
9
810
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
Transcript
Shipping Apps Con dently with Firebase KeepTruckin Subhrajyoti Sen DevFest
Greece & Cyprus 2021 November 2021
Crashes
Crashlytics
Crashlytics • Automatic crash reporting
Crashlytics • • Automatic crash reporting But no limited to
crash reporting
Recording Non-fatal exceptions
Recording Non-fatal exceptions try { // some code can throw
an exception } catch (e: Exception) { Log.d(TAG, e.localizedMessage) }
Recording Non-fatal exceptions try { // some code can throw
an exception } catch (e: Exception) { Log.d(TAG, e.localizedMessage) }
Recording Non-fatal exceptions try { // some code can throw
an exception } catch (e: Exception) { FirebaseCrashlytics.getInstance().recordException(e) }
Recording Non-fatal exceptions private class CrashReportingTree : Timber.Tree() { }
Recording Non-fatal exceptions private class CrashReportingTree : Timber.Tree() { override
fun log(priority: Int, tag: String?, message: String, t: Throwable?) { } }
Recording Non-fatal exceptions private class CrashReportingTree : Timber.Tree() { override
fun log(priority: Int, tag: String?, message: String, t: Throwable?) { if (priority == Log.ERROR && t != null) { FirebaseCrashlytics.getInstance().recordException(t) } } }
Recording Non-fatal exceptions class MainApplication : Application() { override fun
onCreate() { super.onCreate() Timber.plant(CrashReportingTree()) } }
Recording Non-fatal exceptions try { // some code can throw
an exception } catch (e: Exception) { FirebaseCrashlytics.getInstance().recordException(e) }
Recording Non-fatal exceptions try { // some code can throw
an exception } catch (e: Exception) { Timber.e(e) }
Understanding Crashes Better
Analytics
Analytics • We normally use analytics in isolation from crash
reporting
Analytics • • We normally use analytics in isolation from
crash reporting Usually PMs check the analytics and Devs check the crashes
Analytics • • • We normally use analytics in isolation
from crash reporting Usually PMs check the analytics and Devs check the crashes What if you can combine them to get a full view?
Analytics
Analytics
Analytics binding.zoomImage.setOnClickListener { MixpanelAPI.track("Zoom button clicked") }
Analytics binding.zoomImage.setOnClickListener { MixpanelAPI.track("Zoom button clicked") FirebaseAnalytics.getInstance(context) .logEvent("Zoom button clicked",
mapOf("page", "map")) }
Analytics interface AnalyticsProvider { fun track( analyticEvent: String, properties: Map<String,
Any?>? = null ) }
Analytics class FirebaseAnalyticsProvider( private val rebaseAnalytics: FirebaseAnalytics ): AnalyticsProvider {
override fun track(analyticEvent: String, properties: Map<String, Any?>?) { rebaseAnalytics.logEvent(analyticEvent, properties) } }
Analytics class FirebaseAnalyticsProvider( private val rebaseAnalytics: FirebaseAnalytics ): AnalyticsProvider {
override fun track(analyticEvent: String, properties: Map<String, Any?>?) { rebaseAnalytics.logEvent(analyticEvent, properties) } }
Analytics class AnalyticsManager { private val analyticsProviders = mutableListOf<AnalyticsProvider>() fun
addProvider(provider: AnalyticsProvider) { analyticsProviders.add(provider) } }
Analytics class AnalyticsManager { //... fun track(analyticEvent: String, properties: Map<String,
Any?>?) { analyticsProviders.forEach { provider -> provider.track(analyticEvent, properties) } } }
Analytics binding.zoomImage.setOnClickListener { analyticsManager.logEvent( "Zoom button clicked", mapOf("page", "map") )
}
Feature Flags
What's a feature ag?
What's a feature ag? if (isNewFeatureEnabled) { // allow access
to shiny new feature } else { // prevent access to shiny new feature }
Use cases
Use cases • A/B Testing
Use cases • • A/B Testing Rolling out new features
Use cases • • • A/B Testing Rolling out new
features Rolling out rewrite of existing features
Use cases • • • • A/B Testing Rolling out
new features Rolling out rewrite of existing features Merge Work-in-progress features
Types of Feature Flags?
Types of Feature Flags? • Static
Types of Feature Flags? • • Static Decided at build
time
Types of Feature Flags? • • • Static Decided at
build time Based on things like versionCode, buildVariant, etc
Types of Feature Flags? • • • • Static Decided
at build time Based on things like versionCode, buildVariant, etc Dynamic
Types of Feature Flags? • • • • • Static
Decided at build time Based on things like versionCode, buildVariant, etc Dynamic Can be controlled at runtime either locally using dev settings
Types of Feature Flags? • • • • • •
Static Decided at build time Based on things like versionCode, buildVariant, etc Dynamic Can be controlled at runtime either locally using dev settings Or remotely via services like Firebase Remote Con g
None
Show me code!!
interface Con g { val key: String val default: Boolean
val description: String }
enum class FeatureFlags( override val key: String, override val default:
Boolean, override val description: String ): Con g
enum class FeatureFlags( override val key: String, override val default:
Boolean, override val description: String ): Con g { NEW_CHECKOUT_FLOW( "checkout_ ow_v2", true, "Enable checkout ow V2 for trending items" ) }
interface FeatureFlagProvider { fun getValue(featureFlag: FeatureFlag): Boolean }
class FirebaseFeatureFlagProvider: FeatureFlagProvider { private val remoteCon g = FirebaseRemoteCon
g.getInstance() override fun getValue(featureFlag: FeatureFlag): Boolean { return remoteCon g.getBoolean(featureFlag.key) } }
class RemoteCon gManager( private val featureFlagProvider: FeatureFlagProvider ) { fun
isFeatureEnabled(featureFlag: FeatureFlag) = featureFlagProvider.getValue(featureFlag) }
if (remoteCon gManager.isFeatureEnabled(NEW_CHECKOUT_FLOW)) { // allow access to shiny new
feature } else { // prevent access to shiny new feature }
Using Feature Flags effectively
Using Feature Flags effectively • De ne success metrics
Using Feature Flags effectively • • De ne success metrics
Less Crashes?
Using Feature Flags effectively • • • De ne success
metrics Less Crashes? Smoother experience?
Using Feature Flags effectively • • • • De ne
success metrics Less Crashes? Smoother experience? Implement using your Analytics library (like Mixpanel)
Using Feature Flags effectively • • • • • De
ne success metrics Less Crashes? Smoother experience? Implement using your Analytics library (like Mixpanel) Create dashboards to compare
@iamsubhrajyoti https://calendly.com/subhrajyotisen
Credits: UC Davis