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Overview

Copyright (c) A|iens. All rights reserved. — Quick Facts

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Property: Detail

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Technology: PostgreSQL Replication System

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Type: Physical (WAL-based) + Logical…

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Physical Replication: PostgreSQL 9.0+ (streaming), 8.0+…

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Infobox

📚 | Property | Detail | |---|---| | Technology | PostgreSQL Replication System | | Type |…

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Replication Fundamentals

💡 PostgreSQL replication WAL (Write-Ahead Log) par based hai. Har data modification pehle…

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Physical Replication — Streaming

🎯 Physical streaming replication PostgreSQL ka primary HA mechanism hai. Primary server WAL…

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Logical Replication

⭐ Logical replication PostgreSQL 10+ me native support hai. Ye row-level changes ko…

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Replication Slots

🔑 Replication slots ensure karte hain ke primary WAL segments tab tak retain kare jab tak…

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Synchronous Replication

✨ Synchronous replication guarantee karta hai ke transaction tab tak commit nahi hogi jab…

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Cascading Replication

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Synchronous replication sirf…

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Failover me agar cascading source…

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Replication lag cascading me…

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Failover aur Switchover

🚀 Failover tab hota hai jab primary server crash/unreachable ho aur ek standby ko new…

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Conflict Resolution

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BDR (Bi-Directional Replication):…

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Custom solution: Mutual…

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Conflict avoidance: Different ID…

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High Availability Patterns

💡 Production me manual failover acceptable nahi hota. Automated HA solutions use karo. HA…

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Monitoring aur Troubleshooting

🎯 Replication monitoring production databases ka critical aspect hai. Lag detection, slot…

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Cloud Replication Services

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Shared storage layer — replicas…

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Replication lag typically <10ms

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6 copies across 3 AZs automatically

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Writer endpoint + reader endpoint…

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Performance Tuning

🔑 Replication performance optimize karne ke liye WAL settings, network configuration aur…

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Version-wise Replication Improvements

✨ | Version | Year | Major Replication Feature | |---|---|---| | PG 9.0 | 2010 | Streaming…

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Glossary

🌟 | Term | Definition | |---|---| | WAL (Write-Ahead Log) | Transaction log jo data…

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Disclaimer

🚀 Ye article educational aur informational purposes ke liye hai. PostgreSQL replication…

Quick Quiz

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