CASE STUDIES / BACKEND ENGINEERING

Backend problems.
Engineering solutions.

Explore technical scenarios covering backend architecture, security, performance, APIs and scalable system design.

01BACKEND SECURITY
BACKEND ENGINEERING

Designing a Secure REST API

A backend security scenario focused on authentication, authorization, validation, error handling and protecting sensitive business operations.

Node.jsREST APIAuthenticationAuthorizationSecurity
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02PERFORMANCE
BACKEND ENGINEERING

Improving Node.js API Performance

A performance-focused backend scenario involving slow API responses, inefficient database queries and unnecessary processing.

Node.jsPerformanceREST APICachingDatabase
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03IDENTITY & ACCESS
BACKEND SECURITY

Building Authentication & Authorization

A backend security scenario focused on authentication, role-based access control and resource-level authorization.

JWTRBACAuthorizationSessionsAPI Security
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04DATABASE
BACKEND ENGINEERING

Optimizing a Slow Database-Driven API

A backend optimization scenario focused on query performance, indexing and efficient data access patterns.

MongoDBSQLIndexesQuery OptimizationNode.js
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05API PROTECTION
BACKEND SECURITY

Protecting APIs Against Abuse

A backend security scenario focused on rate limiting, brute-force protection and controlling abusive API traffic.

Rate LimitingAPI SecurityBrute ForceValidationRedis
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06ARCHITECTURE
BACKEND ARCHITECTURE

Structuring a Scalable Backend

A backend architecture scenario focused on organizing modules, services, database access and business logic for long-term maintainability.

ArchitectureNode.jsServicesDatabaseScalability
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