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AWS Load Balancer Service

AWS Load Balancer service, officially known as Elastic Load Balancing (ELB), ek managed service hai…

Overview

AWS Load Balancer Service — Quick Facts

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Field: Detail

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Service Name: Elastic Load Balancing (ELB)

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Provider: Amazon Web Services (AWS)

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Category: Networking / Traffic Distribution…

Topic 1

Infobox

📚 | Field | Detail | |---|---| | Service Name | Elastic Load Balancing (ELB) | | Provider |…

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Itihaas (History)

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2009 — Classic Load Balancer (CLB)…

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2016 — Application Load Balancer…

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2017 — Network Load Balancer (NLB)…

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2019 — ALB me weighted target…

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Load Balancer Types

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Architecture Diagram

⭐ `mermaid flowchart TD A[Internet / Clients] --> B[Route 53 - DNS] B --> C[Elastic Load…

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Kaise Kaam Karta Hai

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Round Robin — ALB default;…

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Least Outstanding Requests — ALB…

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Flow Hash — NLB; same…

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Components

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Load balancer par define hote hain

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Ek specific port + protocol par…

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Examples: HTTP:80, HTTPS:443,…

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ALB me har listener ke saath rules…

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Health Checks

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Lightweight health check endpoint…

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Sirf application health check…

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Reasonable thresholds rakho —…

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Use Cases

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/api/users/* → user-service target…

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/api/orders/* → order-service…

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/api/payments/* → payment-service…

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90% traffic → v1 (blue) target…

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Fayde (Benefits)

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High availability — cross-AZ…

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Automatic scaling — ELB…

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Health monitoring — unhealthy…

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SSL/TLS termination — load…

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Limitations

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ALB latency — Layer 7 processing…

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NLB no WAF — NLB par WAF attach…

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CLB deprecation path — Classic LB…

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Cross-region nahi — ELB regional…

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Pricing Model

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Hourly charge: ~$0.0225/hour…

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LCU (Load Balancer Capacity Unit):…

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LCU calculation: maximum of new…

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Hourly charge: ~$0.0225/hour

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Security

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ALB/NLB par SSL certificates…

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TLS 1.2/1.3 enforce karo (older…

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Backend communication HTTP ya…

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WAF rules ALB par attach karo —…

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Best Practices

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Multi-AZ deployment — hamesha kam…

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Cross-zone load balancing — enable…

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Connection draining —…

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Health check endpoint — dedicated…

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Glossary

✨ | Term | Meaning | |---|---| | ELB | Elastic Load Balancing — AWS ka managed load…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

AWS Load Balancer Service ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

AWS Load Balancer Service ka 'Service Name' kya hai?

Complete! 🎉

AWS Load Balancer Service Complete!

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