Microservices

Learn how circuit breakers prevent cascade failures in distributed systems by detecting failures early and failing fast instead of waiting for timeouts.

Every request to your microservices should pass through a single front door. That door is your API gateway—and getting it right determines whether your architecture scales gracefully or collapses under complexity. Why API Gateways? Without a gateway, clients must: Know the location of every service Handle authentication with each service Implement retry logic, timeouts, and circuit breaking Deal with different protocols and response formats An API gateway centralizes these concerns: ...

When you have dozens of microservices talking to each other, managing traffic, security, and observability becomes complex. A service mesh handles this at the infrastructure layer, so your applications don’t have to. What Problems Does a Service Mesh Solve? Without a mesh, every service needs to implement: Retries and timeouts Circuit breakers Load balancing TLS certificates Metrics and tracing Access control With a mesh, the sidecar proxy handles all of this: ...

In distributed systems, failures are inevitable. A single slow or failing service can cascade through your entire architecture, turning a minor issue into a major outage. Circuit breakers prevent this by detecting failures and stopping the cascade before it spreads. The Problem: Cascading Failures Imagine Service A calls Service B, which calls Service C. If Service C becomes slow: Requests to C start timing out Service B’s thread pool fills up waiting for C Service B becomes slow Service A’s threads fill up waiting for B Your entire system grinds to a halt One slow service just took down everything. ...

Traditional request-response architectures work well until they don’t. When your services grow, synchronous calls create tight coupling, cascading failures, and bottlenecks. Event-driven architecture (EDA) offers an alternative: systems that react to changes rather than constantly polling for them. What Is Event-Driven Architecture? In EDA, components communicate through events — immutable records of something that happened. Instead of Service A calling Service B directly, Service A publishes an event, and any interested services subscribe to it. ...