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Course Outline

1. Introduction to Distributed PostgreSQL

  • Scaling challenges associated with single-node PostgreSQL
  • Overview of the Citus extension: purpose, architecture, and components
  • Key concepts: coordinator node, worker nodes, metadata, and distribution keys

2. Cluster Architecture and Setup

  • Node types: coordinator versus workers
  • Table types: distributed, replicated, and local tables
  • Installing and configuring Citus within existing PostgreSQL environments
  • Cluster discovery and node management

3. Data Distribution and Sharding Strategies

  • Sharding methods: hash versus append
  • Selecting a distribution column for optimal performance
  • Managing distributed and replicated tables
  • Re-balancing shards and scaling out

4. Distributed Query Execution and Optimisation

  • How Citus routes and parallelises queries
  • Understanding distributed query plans
  • Query pushdown and execution optimisation

5. Consistency, Transactions and Fault Tolerance

  • Two-Phase Commit (2PC) and atomic operations
  • Handling failures in distributed transactions

6. Operational Management and Use Cases

  • Monitoring tools and views for Citus
  • Maintenance and upgrades in distributed environments

Requirements

  • Completion of the 'Advanced Administration (High Availability & Replication)' course or equivalent experience
  • Strong understanding of PostgreSQL configuration and performance tuning
  • Familiarity with Linux operating systems and basic network concepts

Audience

Experienced Database Administrators, DevOps Engineers, and System Architects who currently manage production PostgreSQL environments and require the ability to scale them horizontally.

 7 Hours

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