Layer 7 Load Balancing

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Load balancing at the application layer (HTTP) that can inspect request contents. Enables content-based routing (URL path, headers, cookies), SSL termination, and request modification. Examples include Nginx, AWS ALB, and Envoy. More flexible but higher latency than L4.

Key Properties

• Content-Based Routing
• SSL Termination
• Header Inspection

Related

• Layer 4 Load Balancing (simpler, faster alternative)
• Application Layer (the layer at which L7 LBs operate)

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networking load-balancing