How do you handle routing, load balancing, and caching with an

PI Gateway?

Routing:

• The API Gateway routes incoming requests to the appropriate microservice based on

the URL, method, or other attributes. It can also aggregate responses from multiple

services and return a unified response.

• Example: Requests to /user are routed to the User Service, and /order to

the Order Service.

Load Balancing:

• The API Gateway often integrates with a load balancer to distribute requests across

multiple instances of a service, ensuring better resource utilization and failover

support.

• Example: Requests to a microservice like User Service can be distributed

mong several instances based on a round-robin or least-connections

strategy.

Caching:

• API Gateways can cache responses for repeated requests, reducing the load on

backend services and improving response times for frequently accessed data.

• Example: Cache responses to user profiles for 1 minute to avoid querying the

User Service on every request.