Android System Design
Design scalable, reliable, and high-performance Android apps—from OS internals and concurrency to modular architecture, offline sync, performance, security, and real-world case studies.
30 weeks (Structured: ~1 module/week)
9.6k students
4.8 rating
Progress0/177 lessons
Key Topics You'll Master
1
Android Architecture Fundamentals2
Core Android Components Deep Dive3
Threading & Concurrency4
Architecture Patterns5
Modern Android Architecture Components6
State Management7
Network Architecture8
Caching Strategies9
Data Synchronization10
Memory Management11
Performance Optimization12
Battery & Network Optimization13
App Modularization14
Scalable Architecture15
Code Organization16
Database Design17
Security Architecture18
Media & Graphics19
Jetpack Compose System Design20
Testing Architecture21
Designing a News Feed/Social App22
Designing a Messaging App23
Designing a Ride-Sharing App24
Designing an E-commerce App25
Android Platform Services26
Cross-Platform Considerations27
CI/CD Pipeline28
Monitoring & Analytics29
Case Study: Design Instagram30
Case Study: Design Twitter/X + Interview FrameworkMaster Jetpack Compose1:1 Coaching
Stuck on advanced concepts like Side Effects or Graphics Layer? Get unblocked with a personalized session from a GDE.
Interested in the 7-Day Sprint Cohort?Learning Outcomes
- Explain Android internals (Binder, Zygote, ART) and lifecycle with confidence
- Architect scalable apps with Clean Architecture, MVVM/MVI, and modularization
- Design robust networking, caching, and offline-first systems with conflict resolution
- Profile and optimize memory, startup, rendering, network, and battery usage
- Apply security best practices (Keystore, encryption, Play Integrity)
- Build production pipelines with CI/CD, monitoring, crash/ANR analysis
- Solve end-to-end system design scenarios and succeed in interviews
Prerequisites
- Solid understanding of Kotlin
- Hands-on Android development experience
- Familiarity with Jetpack components (ViewModel, Room, Navigation)
- Basic knowledge of networking (HTTP/REST) and databases
- Comfort with Android Studio and Gradle
1
Android Architecture FundamentalsAndroid OS layers, processes, memory, IPC, Zygote, and ART vs Dalvik.
2
Core Android Components Deep DiveActivities, Fragments, Services, BroadcastReceivers, ContentProviders, and intents.
3
Threading & ConcurrencyMain thread rules, Handler/Looper, coroutines, Rx/Flow, executors, WorkManager.
4
Architecture PatternsMVC, MVP, MVVM, MVI, UDF, repositories, use cases, and DI trade-offs.
5
Modern Android Architecture ComponentsViewModel, LiveData vs StateFlow, Room, Navigation, Paging, DataStore, App Startup.
6
State ManagementSSOT, state hoisting, UDF, sealed state, process death, and Compose state.
7
Network ArchitectureREST design, Retrofit/OkHttp tuning, GraphQL, WebSockets, gRPC, TLS/pinning.
gRPC on Android
article • 20 min
8
Caching StrategiesMemory/Disk caches, HTTP caching headers, Room as cache, invalidation, offline-first.
9
Data SynchronizationDelta vs full sync, conflict resolution, real-time sync, WorkManager scheduling, consistency models.
10
Memory ManagementLeak patterns, bitmaps, pooling, churn reduction, profiling with LeakCanary/Profiler.
11
Performance OptimizationStartup (cold/warm/hot), lazy init, layout & RecyclerView tuning, 60fps rendering, systrace.
12
Battery & Network OptimizationDoze/App Standby, batching, compression, image formats, background work strategy.
13
App ModularizationFeature vs library modules, dynamic delivery, dependency graph, build times, multi-module nav.
14
Scalable ArchitectureMicroservices integration, multi-tenant concerns, feature flags, config & dynamic content.
15
Code OrganizationPackage structures, SOLID, GOF patterns, codegen (APT/KSP), separation of concerns.
16
Database DesignAdvanced Room (converters, migrations, FTS, views), SQLite tuning, multi-DB strategies.
17
Security ArchitectureEncryption, Keystore, biometrics, Play Integrity, obfuscation, secure coding, OAuth/OIDC.
Biometric Auth & UX
video • 20 min
18
Media & GraphicsExoPlayer, CameraX, image pipelines, custom views/canvas, rendering performance, AR basics.
19
Jetpack Compose System DesignCompose architecture, recomposition, side-effects, custom layouts/modifiers, performance.
20
Testing ArchitectureTest pyramid, doubles, JUnit/Mockito, Espresso, Robolectric, screenshot tests, DI for tests.
21
Designing a News Feed/Social AppInfinite scroll, interactions, realtime updates, image/video feed optimization.
22
Designing a Messaging AppQueues, E2E encryption, multi-device sync, offline storage, notifications.
23
Designing a Ride-Sharing AppRealtime location, maps rendering, routing, matching, geofencing, battery-aware updates.
24
Designing an E-commerce AppCatalog/search, cart, payments, order tracking, inventory sync, analytics.
25
Android Platform ServicesNotifications, widgets, accessibility, sharesheet, shortcuts, PiP.
26
Cross-Platform ConsiderationsKMM, Flutter, React Native—shared logic, native bridges, trade-offs.
27
CI/CD PipelineGitHub Actions/Jenkins, automated tests, beta distribution, versioning, rollout.
28
Monitoring & AnalyticsCrashlytics/ANR, performance traces, custom analytics, funnels, remote config.
29
Case Study: Design InstagramUpload pipeline, feed generation, stories, realtime interactions, DM & search.
30
Case Study: Design Twitter/X + Interview FrameworkTweets, timelines, hashtags/trends, notifications; interview approach & trade-offs.