Definition:Load Balancer
A Load Balancer distributes incoming network traffic across multiple backend server instances to ensure high availability.
Detailed Technical Explanation
Business Perspective
Load balancing guarantees system reliability during peak user surges and prevents server overload.
Technical Perspective
Operates at Layer 4 (TCP/UDP) or Layer 7 (HTTP/HTTPS), terminating SSL certificates at the cloud edge.
Real-World Example
Distributing incoming web traffic evenly across 4 containerized Node.js API servers.
Common Architectural Mistakes
- ✗Stateful Session Affinity: Relying on sticky sessions instead of building stateless backend application nodes.
Ecosystem Integration
Engineering Services & Solutions
Frequently Asked Questions
Layer 4 vs Layer 7 load balancing?
Layer 4 routes network packets based on IP/Port. Layer 7 routes traffic based on HTTP headers, URLs, and cookies.
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