https://github.com/anshumansinha3301/load-balancer-system-design-
A load balancer is a critical component in modern distributed systems and web architecture. Its primary function is to distribute incoming network traffic across multiple servers, ensuring reliability, scalability, and optimal resource utilization.
https://github.com/anshumansinha3301/load-balancer-system-design-
anshumansinha3301 architecture-components bitfusiondynamics load-balancer open-source system-design
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A load balancer is a critical component in modern distributed systems and web architecture. Its primary function is to distribute incoming network traffic across multiple servers, ensuring reliability, scalability, and optimal resource utilization.
- Host: GitHub
- URL: https://github.com/anshumansinha3301/load-balancer-system-design-
- Owner: anshumansinha3301
- License: mit
- Created: 2024-12-26T16:13:21.000Z (10 months ago)
- Default Branch: main
- Last Pushed: 2024-12-26T16:15:43.000Z (10 months ago)
- Last Synced: 2024-12-26T17:20:08.526Z (10 months ago)
- Topics: anshumansinha3301, architecture-components, bitfusiondynamics, load-balancer, open-source, system-design
- Homepage:
- Size: 183 KB
- Stars: 6
- Watchers: 1
- Forks: 3
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Load-Balancer-System-Design-
A load balancer is a critical component in modern distributed
systems and web architecture. Its primary function is to
distribute incoming network traffic across multiple servers,
ensuring reliability, scalability, and optimal resource
utilization.
1. What is a Load Balancer?
A load balancer acts as an intermediary between clients and
backend servers. It receives client requests, determines the
most suitable server to handle each request, and forwards it
accordingly. This prevents any single server from becoming a
bottleneck or failing under heavy traffic.
2. Importance of Load Balancers - High Availability: Load balancers detect server failures and
reroute traffic to healthy servers, ensuring minimal downtime. - Scalability: They enable horizontal scaling by distributing
workloads across additional servers as demand grows. - Performance Optimization: Load balancers distribute requests
evenly, preventing server overload and reducing response
times.
- Security: By acting as a gateway, they can block malicious
traffic, enforce SSL/TLS encryption, and protect against DDoS
attacks.
3. Types of Load Balancers
1. Hardware Load Balancers: - Dedicated physical devices. - High performance but expensive and less flexible.
2. Software Load Balancers: - Software applications deployed on standard hardware or
virtualized environments. - Flexible, cost-effective, and widely used.
3. Cloud Load Balancers: - Provided as a service by cloud providers like AWS, Azure,
or Google Cloud. - Fully managed, highly scalable, and integrates with cloud
ecosystems.
4. Load Balancing Algorithms - Round Robin: Distributes requests sequentially among
servers. - Least Connections: Directs traffic to the server with the
fewest active connections.
- Weighted Round Robin: Allocates traffic based on server
capacity or weight. - IP Hashing: Routes requests based on client IP address for
session persistence.
5. Features of Load Balancers - Health Monitoring: Periodically checks server health and
routes traffic away from unresponsive servers. - SSL Termination: Offloads SSL/TLS decryption, reducing
server overhead. - Session Persistence: Ensures requests from a client are
directed to the same server. - Auto-Scaling Integration: Automatically adjusts server pools
based on demand.
6. Use Cases - Web Applications: Handles high traffic websites and ensures
uptime. - APIs: Manages API traffic for microservices architecture. - Media Streaming: Distributes high bandwidth requests for
video and audio.
7. Challenges and Best Practices - Proper Configuration: Misconfigurations can lead to uneven
traffic distribution. - Monitoring: Regularly monitor load balancer performance to
identify bottlenecks. - Scaling: Ensure adequate backend server capacity for
unexpected traffic surges.