Application layer, microservices, service discovery, background jobs.
The application layer is where your business logic lives—it sits between the web tier and data tier, processing requests, enforcing rules, and orchestrating wor
Microservices architecture decomposes applications into independently deployable services, each owning a specific business capability with its own data store an
Service discovery enables microservices to dynamically locate and communicate with each other without hardcoded network locations. Services register themselves
Background jobs decouple long-running or resource-intensive tasks from synchronous request-response flows, improving user experience and system resilience. Jobs
Event-driven architecture (EDA) is a design pattern where components communicate through asynchronous events rather than direct calls. Producers emit events whe
Schedule-driven jobs use time-based triggers (cron expressions) to execute recurring tasks like nightly reports, cache warming, or data cleanup. Unlike event-dr
Background jobs execute asynchronously, creating a fundamental challenge: how does the client get the result? This topic covers four core patterns—polling, webh
An API Gateway is a single entry point that sits between clients and backend microservices, handling cross-cutting concerns like authentication, rate limiting,
Rate limiting protects services from abuse and overload. Learn token bucket, sliding window, and leaky bucket algorithms with real-world system design examples.