Introduction to Load Balancing Quiz

Load Balancing Basics

• The main goal of load balancing is to distribute incoming network traffic efficiently across multiple backend servers to improve responsiveness, reliability, and scalability of applications.

Load Balancer Positioning

• A load balancer typically sits between the client and the server farm, receiving incoming requests and directing them to available backend servers.

Multi-Layer Load Balancing

• Adding load balancers at multiple layers of the system enables scalable and flexible distribution of incoming traffic and improves overall system resilience.

Backend Servers

• Backend servers are the servers that host applications or services and process incoming requests, providing the actual content or functionality to clients.

Non-Goal of Load Balancing

• Load balancing is not intended to improve the performance of individual servers, but rather to distribute workload efficiently across multiple servers.

Load Reduction

• A load balancer reduces the load on individual servers by spreading incoming requests across multiple servers, preventing overload and improving responsiveness.

Application Availability and Responsiveness

• Load balancers improve overall application availability and responsiveness by efficiently distributing incoming traffic and providing automatic failover to available servers in case of failures.

SSL/TLS Termination

• The purpose of SSL/TLS termination in load balancing is to offload encryption and decryption tasks from backend servers, reducing their workload and improving performance.

Health Checks

• Health checks are used to monitor backend server health, enabling load balancers to detect and redirect traffic away from unhealthy servers, ensuring high availability and responsiveness.

Session Persistence

• Session persistence in load balancing aims to direct incoming requests from a client to the same backend server that handled previous requests from the same client, ensuring session continuity and consistency.

Load Balancer Algorithms

• A load balancer's predefined algorithm takes into account factors such as server availability, response time, geographic location, and client IP addresses when determining which server or resource should handle an incoming request.

Load Balancing Traffic Distribution

• Load balancers distribute incoming network traffic by directing requests to available backend servers using various algorithms, ensuring efficient and scalable traffic management.

Unhealthy Server Handling

• When a server is determined to be unhealthy during a health check, the load balancer redirects incoming traffic to available healthy servers, ensuring minimal disruption to clients.

Load Balancer Role

• The primary role of a load balancer in handling incoming requests is to direct them to available backend servers while ensuring efficient traffic distribution, scalability, and high application availability.

Backend Server Traffic Distribution

• The purpose of distributing incoming traffic among backend servers in load balancing is to improve responsiveness, reliability, and scalability of applications by ensuring no single server becomes overwhelmed.