Balancing the load with Spring Cloud LoadBalancer
Load balancing spreads network traffic across multiple servers to prevent any single server from becoming overwhelmed, improving responsiveness and availability. Load balancers sit between client devices and backend servers, routing client requests to available servers based on predefined algorithms. These algorithms can be as simple as a round-robin that distributes requests sequentially or as complex as considering the current server load and health checks.
Figure 7.4 illustrates how a load balancer works.
Figure 7.4: Load balancer
When clients send requests to the server, it creates traffic. A load balancer, either hardware or software, intercepts these requests and routes them to the most suitable server node, which processes them and delivers the response to the client. The load balancer repeats this process for each request, using various techniques to decide which server will handle each request...
