Wiki Article · Cinematic

High Availability

High availability (HA) ek system design approach hai jisme system maximum uptime provide karta hai…

Overview

High Availability — Quick Facts

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Property: Detail

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Concept: High Availability (HA)

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Type: System Design / Operations /…

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Metric: Uptime percentage (nines)

Topic 1

Infobox

🤖 | Property | Detail | |---|---| | Concept | High Availability (HA) | | Type | System…

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Simple Explanation

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Hospital ka ER 24/7 open rehta hai…

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Ek doctor beemar hua? Doosra…

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10 patients ek sath aaye? Multiple…

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Hospital me 2 generators hain — ek…

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HA Architecture Diagram

💡 `mermaid flowchart TD Users["Users / Clients"] --> LB["Load Balancer\n(Active-Active\nor…

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Availability Nines Table

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HA Patterns

🎯 | Pattern | How It Works | Example | |---|---|---| | Active-Active | Sab nodes traffic…

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HA vs Disaster Recovery vs Fault Tolerance

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Components of HA

🌐 | Component | HA Strategy | Implementation | |---|---|---| | Application Servers |…

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HA for Databases

📊 | Strategy | Description | Trade-off | |---|---|---| | Synchronous Replication | Primary…

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Cost of Availability

🤖 | From → To | What's Needed | Cost Increase | |---|---|---| | 99% → 99.9% | Load balancer…

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Common Pitfalls

🧠 | Pitfall | Problem | Solution | |---|---|---| | SPOF in load balancer | Sab servers HA —…

Comparison

HA vs Disaster Recovery vs Fault Tolerance

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Goal: Minimize downtime

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Scope: Component/service level

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Failover Time: Seconds to minutes

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quiz — Question 1

High Availability ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

High Availability ka 'Concept' kya hai?

Complete! 🎉

High Availability Complete!

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