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
54
Shipping Apps Confidently with Firebase
Subhrajyoti Sen
November 06, 2021
Tweet
Share
More Decks by Subhrajyoti Sen
See All by Subhrajyoti Sen
Compose Previews as a Power User
subhrajyotisen
1
130
Understanding WindowInsets
subhrajyotisen
0
170
Exploring a KMM Developer’s Toolkit
subhrajyotisen
1
180
Understanding WindowInsets - Android Worldwide
subhrajyotisen
0
280
Understanding WindowInsets
subhrajyotisen
1
170
Demystifying Styles and Themes
subhrajyotisen
0
200
Journey Of Time
subhrajyotisen
0
210
Where Did My State Go? - WWC Mobile
subhrajyotisen
0
190
Building a Better Codebase with Lint - Droidcon APAC
subhrajyotisen
1
210
Other Decks in Programming
See All in Programming
deno-redisの紹介とJSRパッケージの運用について (toranoana.deno #21)
uki00a
0
150
DroidKnights 2025 - 다양한 스크롤 뷰에서의 영상 재생
gaeun5744
3
330
エンジニア向け採用ピッチ資料
inusan
0
160
ニーリーにおけるプロダクトエンジニア
nealle
0
570
童醫院敏捷轉型的實踐經驗
cclai999
0
190
すべてのコンテキストを、 ユーザー価値に変える
applism118
2
880
Azure AI Foundryではじめてのマルチエージェントワークフロー
seosoft
0
140
技術同人誌をMCP Serverにしてみた
74th
1
380
ふつうの技術スタックでアート作品を作ってみる
akira888
0
140
今ならAmazon ECSのサービス間通信をどう選ぶか / Selection of ECS Interservice Communication 2025
tkikuc
20
3.7k
Systèmes distribués, pour le meilleur et pour le pire - BreizhCamp 2025 - Conférence
slecache
0
110
LINEヤフー データグループ紹介
lycorp_recruit_jp
0
970
Featured
See All Featured
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
31
1.2k
ReactJS: Keep Simple. Everything can be a component!
pedronauck
667
120k
A better future with KSS
kneath
239
17k
A designer walks into a library…
pauljervisheath
207
24k
Testing 201, or: Great Expectations
jmmastey
42
7.5k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Art, The Web, and Tiny UX
lynnandtonic
299
21k
What’s in a name? Adding method to the madness
productmarketing
PRO
23
3.5k
The Pragmatic Product Professional
lauravandoore
35
6.7k
Building Flexible Design Systems
yeseniaperezcruz
328
39k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
17
940
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