Comprehensive architecture, system design, and scalability interview questions covering distributed systems, design patterns, and large-scale system architecture. Architecture Design Interview questions covering software architecture patterns and design principles: Easy: Monolithic vs. Microservices, REST vs. GraphQL, …

Hard-level backend interview questions covering distributed systems, advanced architecture, and complex system design. Q1: Design a distributed caching system (like Redis Cluster). Answer: Consistent Hashing Implementation 1package main 2 3import ( 4 "fmt" 5 "hash/fnv" 6 "sort" 7 "sync" …

Hard-level Polkadot interview questions covering advanced optimization and complex parachain design. Q1: How do you implement advanced runtime upgrades? Answer: Runtime Upgrades: 1pub struct CustomUpgrade; 2 3impl OnRuntimeUpgrade for CustomUpgrade { 4 fn on_runtime_upgrade() -> Weight { 5 // Migration logic 6 // …

Hard-level Solana interview questions covering advanced optimization, security, and complex program design. Q1: How do you implement advanced account compression and state optimization? Answer: State Compression: 1// Use Merkle trees for state 2use merkle_tree::MerkleTree; 3 4pub struct CompressedState { 5 tree: …

Easy-level software architecture interview questions covering fundamental patterns, principles, and concepts. Q1: Explain the difference between monolithic and microservices architecture. Answer: Monolithic Architecture Definition: Single unified application where all components are tightly coupled and deployed …

Hard-level software architecture interview questions covering advanced distributed systems, consensus, and complex patterns. Q1: Explain distributed consensus algorithms (Raft, Paxos). Answer: Problem: How do multiple nodes agree on a value in presence of failures? Raft Algorithm Roles: Leader: Handles all client …

Medium-level software architecture interview questions covering distributed systems, event-driven architecture, and advanced patterns. Q1: Explain Event-Driven Architecture and its benefits. Answer: Definition: Architecture where components communicate through events (state changes) rather than direct calls. Core …

Block diagrams show system components as blocks with connections. Perfect for visualizing system architecture, data flow, and component relationships. Use Case Use block diagrams when you need to: Show system architecture Visualize component relationships Document data flow Design system components Communicate system …

Clean Architecture (by Robert C. Martin) organizes code into layers with clear dependencies flowing inward. The inner layers contain business logic and are independent of frameworks, UI, and databases. Use Case Use Clean Architecture when you need to: Build maintainable, testable systems Keep business logic independent …

The C4 model provides a hierarchical way to visualize software architecture at different levels of abstraction: Context, Containers, Components, and Code. Perfect for documenting system architecture. Use Case Use architecture diagrams when you need to: Document system architecture Show system boundaries and …

UML class diagrams show the structure of a system by displaying classes, their attributes, methods, and relationships. Essential for documenting object-oriented designs and system architecture. Use Case Use class diagrams when you need to: Document system architecture Show class relationships and hierarchies Design …

Common software antipatterns to avoid across all languages and architectures. God Object Problem: One class/module does everything. Example: 1class Application: 2 def connect_database(self): pass 3 def send_email(self): pass 4 def process_payment(self): pass 5 def generate_report(self): pass 6 def …