Why should we use Load Balancer (except preventing overloading)?
Câu trả lời
Using a load balancer offers several significant advantages beyond merely preventing server overloading. Here are some key reasons to use a load balancer:
1. Enhanced Application Performance
Load balancers distribute user requests across multiple servers, which can significantly improve the response time and overall performance of applications. By ensuring that no single server bears too much load, applications can operate more efficiently and provide a better user experience[1][2].
2. Increased Reliability and Uptime
Load balancers perform regular health checks on servers and can automatically reroute traffic to healthy servers if one fails. This ensures that applications remain available and reliable, minimizing downtime and disruptions for users[2][3][4].
3. Scalability
Load balancers facilitate seamless scalability by allowing new servers to be added to the server pool as needed. This is particularly useful during traffic spikes, such as during sales events or product launches, ensuring that the application can handle increased demand without performance degradation[2][3][4].
4. Improved Security
Load balancers can act as a security layer by performing SSL encryption and termination, filtering out malicious requests, and protecting backend servers from attacks. This helps in mitigating security risks and ensuring compliance with standards like PCI for handling sensitive data[2][5][6].
5. Centralized Traffic Management
Load balancers provide a centralized point of control for managing traffic and policies across multiple servers. This simplifies administrative tasks and allows for more effective implementation of traffic routing policies, ensuring optimal performance and adherence to service level agreements (SLAs)[1][3].
6. Energy Efficiency
By distributing workloads efficiently, load balancers can reduce energy consumption in data centers. This is achieved by optimizing server resource usage, which minimizes power and cooling requirements[1].
7. Flexibility and Maintenance
Load balancers offer flexibility in managing server maintenance. Traffic can be directed away from servers undergoing maintenance, ensuring that the application remains available and users are not affected by downtime[6][7].
