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 Duration 7 hours

Course Outline

1. Introduction to Distributed PostgreSQL

  • Challenges associated with scaling single-node PostgreSQL
  • An overview of the Citus extension, including its purpose, architecture, and components
  • Core concepts: coordinator node, worker nodes, metadata, and distribution keys

2. Cluster Architecture and Setup

  • Node roles: distinguishing between coordinators and workers
  • Table classifications: distributed, replicated, and local tables
  • Installation and configuration of Citus within existing PostgreSQL environments
  • Cluster discovery and node management practices

3. Data Distribution and Sharding Strategies

  • Sharding approaches: comparing hash and append methods
  • Selecting optimal distribution columns to maximise performance
  • Administration of distributed and replicated tables
  • Re-balancing shards and strategies for scaling out

4. Distributed Query Execution and Optimisation

  • Mechanisms by which Citus routes and parallelises queries
  • Interpreting distributed query plans
  • Techniques for query pushdown and execution optimisation

5. Consistency, Transactions and Fault Tolerance

  • Two-Phase Commit (2PC) and ensuring atomic operations
  • Strategies for handling failures within distributed transactions

6. Operational Management and Use Cases

  • Utilising monitoring tools and views specific to Citus
  • Maintenance procedures and upgrades in distributed environments

Requirements

  • Completion of Advanced Administration (High Availability & Replication) or comparable practical experience
  • A strong understanding of PostgreSQL configuration and performance tuning
  • Familiarity with Linux environments and fundamental networking concepts

Target Audience

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

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