Types of Load Balancing Algorithms
🔄 Load Balancing Algorithm — A load balancing algorithm is a set of predefined rules used by a load balancer to distribute network traffic between servers, ensuring no single server becomes overloaded.
📊 Dynamic Algorithms — These algorithms consider the current state of each server to distribute traffic efficiently. Examples include Least Connection, Weighted Least Connection, Weighted Response Time, and Resource-Based algorithms.
⚖️ Static Algorithms — These algorithms distribute traffic without considering the current server state. Examples include Round Robin, Weighted Round Robin, and IP Hash.
🔍 Least Connection — This dynamic algorithm routes traffic to servers with the fewest open connections, assuming equal processing power for each connection.
📈 Weighted Round Robin — A static algorithm that assigns different weights to servers, allowing those with higher capacity to handle more traffic.
Dynamic Load Balancing
🔄 Least Connection — This algorithm directs traffic to servers with the fewest active connections, optimizing for equal processing power across connections.
⚖️ Weighted Least Connection — Similar to Least Connection, but allows for assigning different weights to servers based on their capacity to handle connections.
⏱️ Weighted Response Time — Combines server response time and open connections to determine the best server for routing traffic, ensuring faster user service.
🖥️ Resource-Based — Utilizes an agent on each server to measure available CPU and memory, distributing load based on current resource availability.
Static Load Balancing
🔄 Round Robin — Distributes traffic evenly across servers in a sequential manner, often using DNS to rotate through server IPs.
⚖️ Weighted Round Robin — Enhances Round Robin by assigning weights to servers, allowing those with greater capacity to receive more traffic.
🔢 IP Hash — Uses a hash function on the source and destination IP addresses to consistently route traffic to the same server, ensuring session persistence.
Cloudflare Load Balancing
🌐 Global Server Load Balancing — Cloudflare uses health checks to direct traffic to healthy servers, optimizing for regional traffic handling to reduce latency.
🔍 Health Checks — Regularly monitors server health to ensure traffic is routed to operational servers, preventing downtime.
📍 Regional Traffic Handling — Customizes traffic routing based on geographic location, minimizing travel distance and improving speed.
🔄 Load Balancing as a Service (LBaaS) — Offers scalable load balancing solutions that integrate with existing infrastructure, enhancing performance and reliability.
Originally published at https://dev.to on December 6, 2024.
